Valbénazine : interactions médicamenteuses

Reserve the combination of amiodarone with other antiarrhythmic therapies that prolong the QTc to patients with life-threatening ventricular arrhythmias who are incompletely responsive to a single agent. (notice Amiodarone, Mises en garde et précautions)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

This risk which can be fatal should be considered in patients with certain cardiovascular disorders including known QT prolongation or history torsades de pointes, those with proarrhythmic conditions, and with other drugs that prolong the QT interval. (notice Azithromycine, Mises en garde et précautions)

Dose adjustments due to drug interactions ( 2.4 , 7.1 ): Factors Dose Adjustments for INGREZZA and INGREZZA SPRINKLE Use of MAOIs with INGREZZA or INGREZZA SPRINKLE Avoid concomitant use with MAOIs. (notice Valbénazine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Avoid use in patients with known prolongation, those with hypokalemia, and with other drugs that prolong the QT interval. (notice Ciprofloxacine, Mises en garde et précautions)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Taking tetrabenazine or valbenazine [see Drug Interactions ( 7.6 )] . (notice Deutétrabénazine, Contre-indications)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Use with Drugs that Prolong QT Interval and Antiarrhythmic Agents The use of dofetilide in conjunction with other drugs that prolong the QT interval has not been studied and is not recommended. (notice Dofétilide, Mises en garde)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Concomitant use of COMPLERA with drugs with a known risk to prolong the QTc interval of the electrocardiogram may increase the risk of Torsade de Pointes. (notice Emtricitabine, rilpivirine et ténofovir, Mises en garde et précautions)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Coadministration of other drugs known to prolong the QT interval and which are metabolized via the enzyme CYP3A4 such as erythromycin, pimozide, and quinidine are contraindicated in patients receiving fluconazole. (notice Fluconazole, Contre-indications)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

(See DOSAGE and ADMINISTRATION. ) Because of the risk of QT prolongation and the potential for torsades de pointes, the use of FOSCAVIR should be avoided in combination with agents known to prolong the QT interval including Class IA (e.g., quinidine or procainamide) or Class III (e.g., dofetilide, amiodarone, sotalol) antiarrhythmic agents, phenothiazines, tricyclic… (notice Foscarnet, Interactions médicamenteuses)

Avoid co-administration of CONTEPO with drugs known to prolong the QT interval. (notice Fosfomycine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Therefore, PLAQUENIL is not recommended in patients taking other drugs that have the potential to prolong the QT interval. (notice Hydroxychloroquine, Mises en garde et précautions)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Dose adjustments due to drug interactions ( 2.4 , 7.1 ): Factors Dose Adjustments for INGREZZA and INGREZZA SPRINKLE Use of MAOIs with INGREZZA or INGREZZA SPRINKLE Avoid concomitant use with MAOIs. (notice Valbénazine, Interactions médicamenteuses)

Bradycardia may increase the risk of QT prolongation which may lead to severe ventricular arrhythmias, including torsade de pointes, especially in patients with risk factors such as use of QTc prolonging drugs [see Adverse Reactions ( 6.2 )] . (notice Ivabradine, Mises en garde et précautions)

Avoid use in patients with known prolongation, those with hypokalemia, and with other drugs that prolong the QT interval ( 5.11 , 8.5 ) (notice Lévofloxacine, Mises en garde et précautions)

Dose adjustments due to drug interactions ( 2.4 , 7.1 ): Factors Dose Adjustments for INGREZZA and INGREZZA SPRINKLE Use of MAOIs with INGREZZA or INGREZZA SPRINKLE Avoid concomitant use with MAOIs. (notice Valbénazine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Examples diazepam, alprazolam, alcohol Drugs that Prolong QTc Interval Clinical Impact The concomitant use of other drugs which prolong the QTc interval with REMERON/REMERONSolTab, increase the risk of QT prolongation and/or ventricular arrhythmias (e.g., Torsades de Pointes). (notice Mirtazapine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Avoid coadministration of oxaliplatin injection with medicinal products with a known potential to prolong the QT interval. (notice Oxaliplatine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Avoid coadministration of VOTRIENT with drugs known to prolong the QT/QTc interval. (notice Pazopanib, Interactions médicamenteuses)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Dose adjustments due to drug interactions ( 2.4 , 7.1 ): Factors Dose Adjustments for INGREZZA and INGREZZA SPRINKLE Use of MAOIs with INGREZZA or INGREZZA SPRINKLE Avoid concomitant use with MAOIs. (notice Valbénazine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

The use of WAKIX should be avoided in patients with known QT prolongation or in combination with other drugs known to prolong the QT interval [see Drug Interactions ( 7.1 )]. (notice Pitolisant, Mises en garde et précautions)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

• Avoid use with other antiarrhythmic agents or drugs that prolong the QT interval. (notice Propafénone, Mises en garde et précautions)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Dose adjustments due to drug interactions ( 2.4 , 7.1 ): Factors Dose Adjustments for INGREZZA and INGREZZA SPRINKLE Use of MAOIs with INGREZZA or INGREZZA SPRINKLE Avoid concomitant use with MAOIs. (notice Valbénazine, Interactions médicamenteuses)

Examples: beta-blockers, clonidine, guanethidine, and reserpine Clopidogrel : Avoid concomitant use; if used concomitantly initiate at 0.5 mg before each meal and limit total daily dose to 4 mg ( 7 ) (notice Répaglinide, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Dose adjustments due to drug interactions ( 2.4 , 7.1 ): Factors Dose Adjustments for INGREZZA and INGREZZA SPRINKLE Use of MAOIs with INGREZZA or INGREZZA SPRINKLE Avoid concomitant use with MAOIs. (notice Valbénazine, Interactions médicamenteuses)

Avoid the concomitant use of drugs known to prolong the QTc interval. (notice Sertraline, Interactions médicamenteuses)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

• Taking deutetrabenazine or valbenazine [see Drug Interactions ( 7.7 )] . (notice Tétrabénazine, Contre-indications)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Use of strong CYP3A4 inducers with INGREZZA or INGREZZA SPRINKLE Concomitant use is not recommended. (notice Valbénazine, Interactions médicamenteuses)

Dose adjustments due to drug interactions ( 2.4 , 7.1 ): Factors Dose Adjustments for INGREZZA and INGREZZA SPRINKLE Use of MAOIs with INGREZZA or INGREZZA SPRINKLE Avoid concomitant use with MAOIs. (notice Valbénazine, Interactions médicamenteuses)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Avoid concomitant use of VEPPANU with strong CYP3A inhibitors or drugs known to prolong the QTc interval. (notice Vepdégestrant, Mises en garde et précautions)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

For patients who are CYP2D6 poor metabolizers or are taking a strong CYP2D6 inhibitor, dose reduction may be necessary. (notice Valbénazine, Mises en garde et précautions)

Drug Interactions Catecholamine-depleting drugs, such as reserpine, may have an additive effect when given with β-blocking agents. (notice Acébutolol, Interactions médicamenteuses)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

MAO inhibitors, tricyclic antidepressants and drugs that prolong the QTc interval may potentiate effect on the cardiovascular system. (notice Arformotérol, Interactions médicamenteuses)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

Drug Interactions Catecholamine-depleting drugs (e.g., reserpine) may have an additive effect when given with beta-blocking agents. (notice Aténolol, Interactions médicamenteuses)

Patients treated with atenolol and chlorthalidone plus a catecholamine depletor (e.g., reserpine) should be closely observed for evidence of hypotension and/or marked bradycardia which may produce vertigo, syncope or postural hypotension. (notice Aténolol et chlortalidone, Interactions médicamenteuses)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Catecholamine-depleting drugs (eg, reserpine) may have an additive effect when given with beta-blocking agents. (notice Bétaxolol, Interactions médicamenteuses)

Patients receiving catecholamine-depleting drugs, such as reserpine or guanethidine, should be closely monitored, because the added beta-adrenergic blocking action of BISOPROLOL FUMARATE may produce excessive reduction of sympathetic activity. (notice Bisoprolol, Interactions médicamenteuses)

Patients receiving catecholamine-depleting drugs, such as reserpine or guanethidine, should be closely monitored because the added beta-adrenergic blocking action of bisoprolol fumarate may produce excessive reduction of sympathetic activity. (notice Bisoprolol et hydrochlorothiazide, Interactions médicamenteuses)

Catecholamine-depleting Drugs Close observation of the patient is recommended when a beta blocker is administered to patients receiving catecholamine-depleting drugs such as reserpine, because of possible additive effects and the production of hypotension and/or marked bradycardia, which may result in vertigo, syncope, or postural hypotension. (notice Brimonidine et timolol, Interactions médicamenteuses)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

The risk of combining buprenorphine with other QT-prolonging agents is not known. (notice Buprénorphine, Mises en garde et précautions)

The risk of combining buprenorphine with other QT-prolonging agents is not known. (notice Buprénorphine et naloxone, Mises en garde et précautions)

For patients who are CYP2D6 poor metabolizers or are taking a strong CYP2D6 inhibitor, dose reduction may be necessary. (notice Valbénazine, Mises en garde et précautions)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Hypotensive agents (e.g., reserpine, MAO inhibitors, clonidine) may increase the risk of hypotension and/or severe bradycardia. (notice Carvédilol, Interactions médicamenteuses)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

For patients who are CYP2D6 poor metabolizers or are taking a strong CYP2D6 inhibitor, dose reduction may be necessary. (notice Valbénazine, Mises en garde et précautions)

Avoid use of Citalopram Capsules in patients with congenital long QT syndrome, bradycardia, hypokalemia or hypomagnesemia, recent acute myocardial infarction, or uncompensated heart failure and patients taking other drugs that prolong the QTc interval. (notice Citalopram, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Postganglionic Blocking Agents Agents such as reserpine potentiate cocaine-induced sympathetic stimulation; concurrent use may increase the risk of hypertension and cardiac arrhythmias that may be life-threatening. (notice Cocaïne, Interactions médicamenteuses)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

For patients who are CYP2D6 poor metabolizers or are taking a strong CYP2D6 inhibitor, dose reduction may be necessary. (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

Carefully monitor cardiac rhythm when administering SUPRANE to susceptible patients (e.g., patients with congenital Long QT Syndrome or patients taking drugs that can prolong the QT interval). (notice Desflurane, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

For patients who are CYP2D6 poor metabolizers or are taking a strong CYP2D6 inhibitor, dose reduction may be necessary. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Digoxin Clinical Implication: Concomitant use of INGREZZA or INGREZZA SPRINKLE with digoxin increased digoxin levels because of inhibition of intestinal P-glycoprotein (P-gp) [see Clinical Pharmacology ( 12.3 )] . (notice Valbénazine, Interactions médicamenteuses)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

For patients who are CYP2D6 poor metabolizers or are taking a strong CYP2D6 inhibitor, dose reduction may be necessary. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Catecholamine-Depleting Drugs Close observation of the patient is recommended when a beta-blocker is administered to patients receiving catecholamine-depleting drugs such as reserpine, because of possible additive effects and the production of hypotension and/or marked bradycardia, which may result in vertigo, syncope, or postural hypotension. (notice Dorzolamide et timolol, Interactions médicamenteuses)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

…cardiac disease, 3) treatment with Class I and Class III antiarrhythmics, 4) treatment with monoamine oxidase inhibitors (MAOI's), 5) concomitant treatment with other drug products known to prolong the QT interval (see PRECAUTIONS, Drug Interactions ), and 6) electrolyte imbalance, in particular hypokalemia and hypomagnesemia, or concomitant treatment with drugs… (notice Dropéridol, Mises en garde)

For patients who are CYP2D6 poor metabolizers or are taking a strong CYP2D6 inhibitor, dose reduction may be necessary. (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

QT Prolongation: Monitor for prolonged QT intervals in patients with congestive heart failure, bradyarrhythmias, drugs known to prolong the QT interval, and electrolyte abnormalities. (notice Éribuline, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

…prolonged QT interval, 3) treatment with Class 1 and Class III antiarrhythmics, 4) treatment with monoamine oxidase inhibitors (MAOI's), 5) concomitant treatment with other drug products known to prolong the QT interval and 6) electrolyte imbalance, in particular hypokalemia and hypomagnesemia, or concomitant treatment with drugs (e.g., diuretics) that may cause electrolyte… (notice Fentanyl, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

For patients who are CYP2D6 poor metabolizers or are taking a strong CYP2D6 inhibitor, dose reduction may be necessary. (notice Valbénazine, Mises en garde et précautions)

…Antidepressants, QTc Prolonging Drugs Formoterol, as with other beta 2 -agonists, should be administered with extreme caution to patients being treated with monoamine oxidase inhibitors, tricyclic antidepressants, or drugs known to prolong the QTc interval because the effect of adrenergic agonists on the cardiovascular system may be potentiated by these agents. (notice Formotérol, Interactions médicamenteuses)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

The signs of hypoglycemia may be reduced or absent in patients taking sympatholytic drugs such as beta-blockers, clonidine, guanethidine, and reserpine. (notice Glimépiride, Interactions médicamenteuses)

The signs of hypoglycemia may be reduced or absent in patients taking sympatholytic drugs such as beta-blockers, clonidine, guanethidine, and reserpine. (notice Glipizide, Interactions médicamenteuses)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Effect on QT/QTc Interval: Androgen deprivation therapy may prolong the QT interval. (notice Goséréline, Mises en garde et précautions)

This observation should be considered in making clinical decisions regarding patient monitoring when prescribing HYSINGLA ER in patients with congestive heart failure, bradyarrhythmias, electrolyte abnormalities, or who are taking medications that are known to prolong the QTc interval. (notice Hydrocodone, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Drugs That May Blunt Signs and Symptoms of Hypoglycemia Drugs: Beta-blockers, clonidine, guanethidine and reserpine Intervention: Increased frequency of glucose monitoring may be required when Insulin Aspart is concomitantly administered with these drugs. (notice Insuline asparte, Interactions médicamenteuses)

Drugs That May Blunt Signs and Symptoms of Hypoglycemia Drugs: Beta-blockers, clonidine, guanethidine, and reserpine Intervention: Increased frequency of glucose monitoring may be required when Insulin Degludec is co-administered with these drugs. (notice Insuline dégludec, Interactions médicamenteuses)

Drugs That May Blunt Signs and Symptoms of Hypoglycemia Drugs: Beta-blockers, clonidine, guanethidine, and reserpine Intervention: Increased frequency of glucose monitoring may be required when LEVEMIR is co-administered with these drugs. (notice Insuline détémir, Interactions médicamenteuses)

Drugs that May Blunt Signs and Symptoms of Hypoglycemia Drugs: Beta-blockers, clonidine, guanethidine, and reserpine. (notice Insuline glargine, Interactions médicamenteuses)

Drugs That May Blunt Signs and Symptoms of Hypoglycemia Drugs: Beta-blockers, clonidine, guanethidine, and reserpine. (notice Insuline lispro, Interactions médicamenteuses)

Mechanism and Clinical Effect(s) Concomitant use of pentamidine with AFREZZA may cause hypoglycemia, which may sometimes be followed by hyperglycemia Beta-blockers, Clonidine, Guanethidine, and Reserpine Prevention or Management Monitor blood glucose more frequently and modify AFREZZA dosage, as clinically indicated, when used concomitantly with these drugs. (notice Insuline rapide (humaine), Interactions médicamenteuses)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Monitor QT interval when administering FORANE to susceptible patients (e.g., patients with congenital Long QT Syndrome or patients taking drugs that can prolong the QT interval). (notice Isoflurane, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

TYKERB may prolong the QT interval in some patients. (notice Lapatinib, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

Effect on QT/QTc Interval: Androgen deprivation therapy may prolong the QT interval. (notice Leuproréline, Mises en garde et précautions)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Risk of QT Prolongation : Lofexidine tablets prolong the QT interval. (notice Lofexidine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other Drugs that Prolong the QTc Interval Coadministration of other drugs known to alter cardiac conduction (e.g., anti-arrhythmic or beta-adrenergic blocking agents, calcium channel blockers, antihistamines or H 1 -blocking agents, tricyclic antidepressants and phenothiazines) might also contribute to a prolongation of the QTc interval. (notice Méfloquine, Interactions médicamenteuses)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Catecholamine depleting drugs (e.g., reserpine, monoamine oxidase (MAO) inhibitors) may have an additive effect when given with beta-blocking agents. (notice Métoprolol, Interactions médicamenteuses)

Drug Interactions with Metoprolol Catecholamine Depleting Drugs: The concomitant use of catecholamine-depleting drugs (e.g., reserpine, monoamine oxidase (MAO) inhibitors) with beta adrenergic blockers may have an additive affect and increase the risk of hypotension or bradycardia CYP2D6 Inhibitors: Drugs that are strong inhibitors of CYP2D6 such as quinidine,… (notice Métoprolol et hydrochlorothiazide, Interactions médicamenteuses)

Drugs that Prolong the QT Interval QT prolongation has been reported, particularly when metronidazole was administered with drugs with the potential for prolonging the QT interval. (notice Métronidazole, Interactions médicamenteuses)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

Pharmacokinetic studies between moxifloxacin and other drugs that prolong the QT interval such as cisapride, erythromycin, antipsychotics, and tricyclic antidepressants have not been performed. (notice Moxifloxacine, Mises en garde et précautions)

Catecholamine-depleting drugs (e.g., reserpine) - additive effect; monitor closely for evidence of hypotension and/or excessive bradycardia (e.g., vertigo, syncope, postural hypotension). (notice Nadolol, Interactions médicamenteuses)

For patients who are CYP2D6 poor metabolizers or are taking a strong CYP2D6 inhibitor, dose reduction may be necessary. (notice Valbénazine, Mises en garde et précautions)

Drugs That May Blunt Signs and Symptoms of Hypoglycemia Drugs: beta-blockers, clonidine, guanethidine, and reserpine Intervention: Increased frequency of glucose monitoring may be required when nateglinide is coadministered with these drugs. (notice Natéglinide, Interactions médicamenteuses)

Reserpine or clonidine may produce excessive reduction of sympathetic activity. (notice Nébivolol, Interactions médicamenteuses)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

For patients who are CYP2D6 poor metabolizers or are taking a strong CYP2D6 inhibitor, dose reduction may be necessary. (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

For patients who are CYP2D6 poor metabolizers or are taking a strong CYP2D6 inhibitor, dose reduction may be necessary. (notice Valbénazine, Mises en garde et précautions)

Drugs that Prolong QT: Use with caution in patients who are at significant risk of developing QTc prolongation. (notice Pasiréotide, Interactions médicamenteuses)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

…that Antagonize the Pressor Effect The increasing blood pressure effect of BIORPHEN is decreased in patients receiving: α-adrenergic antagonists Phosphodiesterase Type 5 inhibitors Mixed α- and β-receptor antagonists Calcium channel blockers, such as nifedipine Benzodiazepines ACE inhibitors Centrally acting sympatholytic agents, such as reserpine, guanfacine (notice Phényléphrine, Interactions médicamenteuses)

Drug Interactions Catecholamine-depleting drugs (e.g., reserpine) may have an additive effect when given with beta-blocking agents. (notice Pindolol, Interactions médicamenteuses)

The signs of hypoglycemia may be reduced or absent in patients taking sympatholytic drugs such as beta-blockers, clonidine, guanethidine, and reserpine. (notice Pioglitazone et glimépiride, Interactions médicamenteuses)

Anti-Arrhythmic Drugs, QT Prolonging Drugs, Drugs that may Decrease Heart Rate PONVORY has not been studied in patients taking QT prolonging drugs. (notice Ponésimod, Interactions médicamenteuses)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

QT Interval Prolonging Drugs The pharmacodynamic interaction potential to prolong the QT interval of the electrocardiogram between Primaquine phosphate Tablets and other drugs that effect cardiac conduction is unknown. (notice Primaquine, Interactions médicamenteuses)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

For patients who are CYP2D6 poor metabolizers or are taking a strong CYP2D6 inhibitor, dose reduction may be necessary. (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

In healthy subjects, 75 mg once daily and 300 mg once daily (3 times and 12 times the dose in EDURANT) have been shown to prolong the QTc interval of the electrocardiogram. (notice Rilpivirine, Mises en garde et précautions)

QT Interval Prolongation The overall analysis of ECG data in pediatric patients indicates that the concomitant use of Rocuronium Bromide Injection with general anesthetic agents can prolong the QTc interval [see Clinical Studies ( 14.3 )]. (notice Rocuronium, Mises en garde et précautions)

For patients who are CYP2D6 poor metabolizers or are taking a strong CYP2D6 inhibitor, dose reduction may be necessary. (notice Valbénazine, Mises en garde et précautions)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Caution should be exercised when administering sevoflurane to susceptible patients (e.g., patients with congenital Long QT Syndrome or patients taking drugs that can prolong the QT interval). (notice Sévoflurane, Mises en garde)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Monitor electrolytes and electrocardiograms in patients with congestive heart failure, bradyarrhythmias, drugs known to prolong the QT interval, including Class Ia and III antiarrhythmics. (notice Sorafénib, Mises en garde et précautions)

Additive to other QT-prolonging drugs ( 7.1 , 7.2 ) (notice Sotalol, Interactions médicamenteuses)

Drugs that Prolong the QT interval QT prolongation has been reported with metronidazole, a component of bismuth subcitrate potassium, metronidazole and tetracycline hydrochloride, particularly when administered with drugs with the potential for prolonging the QT interval. (notice Sous-citrate de bismuth, métronidazole et tétracycline, Mises en garde et précautions)

Drugs that Prolong QT Interval SUTENT is associated with QTc interval prolongation [see Warnings and Precautions (5.3) , Clinical Pharmacology (12.2) ] . (notice Sunitinib, Interactions médicamenteuses)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

For patients who are CYP2D6 poor metabolizers or are taking a strong CYP2D6 inhibitor, dose reduction may be necessary. (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

Catecholamine-Depleting Drugs Close observation of the patient is recommended when a beta-blocker is administered to patients receiving catecholamine-depleting drugs such as reserpine, because of possible additive effects and the production of hypotension and/or marked bradycardia, which may result in vertigo, syncope, or postural hypotension. (notice Timolol, Interactions médicamenteuses)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Effect on QT/QTc Interval: Androgen deprivation therapy may prolong the QT interval. (notice Triptoréline, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (notice Valbénazine, Mises en garde et précautions)

Prevention or Management Avoid co-administration of potent ENT1, CNT3, or BCRP transporter inhibitors (e.g., ritonavir, eltrombopag, curcumin, cyclosporine, dilazep, nifedipine, nimodipine, cilostazol, sulindac, dipyridamole, or reserpine) during the 4 to 5 day MAVENCLAD treatment cycles. (notice Cladribine, Interactions médicamenteuses)

Examples of acidifying agents include gastrointestinal acidifying agents (e.g., guanethidine, reserpine, glutamic acid hydrochloride, ascorbic acid) and urinary acidifying agents (e.g., ammonium chloride, sodium acid phosphate, methenamine salts). (notice Dexamfétamine, Interactions médicamenteuses)

Examples: α-adrenergic antagonists, β-adrenergic receptor antagonists, reserpine, quinidine, mephentermine Other Drug Interactions G u anethidine C linical Impact: Ephedrine may inhibit the neuron blockage produced by guanethidine, resulting in loss of antihypertensive effectiveness. (notice Éphédrine, Interactions médicamenteuses)

Phenoxybenzamine hydrochloride blocks hyperthermia production by levarterenol, and blocks hypothermia production by reserpine. (notice Phénoxybenzamine, Interactions médicamenteuses)