Phentolamine : interactions médicamenteuses

Should not be used in combination with other alpha adrenergic antagonists ( 5.4 , 7.2 ) (notice Alfuzosine, Mises en garde et précautions)

Do not use JALYN with other alpha-adrenergic antagonists, as this may increase the risk of hypotension. (notice Dutastéride et tamsulosine, Mises en garde et précautions)

Avoid coadministration of FANAPT with alpha-adrenergic blocking agents and adjust medications that affect blood pressure as needed [see Warnings and Precautions (5.7) ] . (notice Ilopéridone, Interactions médicamenteuses)

…that Affect Concomitant Drug Concentrations Concomitant Drug Within Class Prevention or Management Drug Interactions with TOLSURA that Increase Concomitant Drug Concentrations and May Increase Risk of Adverse Reactions Associated with the Concomitant Drug Alpha Blockers Alfuzosin Silodosin Tamsulosin Not recommended during and 2 weeks after TOLSURA treatment. (notice Itraconazole, Interactions médicamenteuses)

(The dosage reported for phentolamine is 5 mg intravenously.) Care should be taken to administer this drug slowly in order to avoid producing an excessive hypotensive effect. (notice Phénelzine, Mises en garde)

Silodosin capsules should not be used in combination with other alpha-blockers. (notice Silodosine, Mises en garde et précautions)

CIALIS is not recommended in combination with alpha-blockers for the treatment of BPH because efficacy of the combination has not been adequately studied and because of the risk of blood pressure lowering. (notice Tadalafil, Mises en garde et précautions)

• Should not be used in combination with other alpha adrenergic blocking agents ( 5.2 , 7.2 , 12.3 ) (notice Tamsulosine, Mises en garde et précautions)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

• Use of avanafil with alpha-blockers, other antihypertensives, or substantial amounts of alcohol (greater than 3 units) may lead to hypotension ( 2.3 , 5.6 , 5.7 ) (notice Avanafil, Mises en garde et précautions)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

As with other alpha-blockers, there is a potential for syncope, especially after the initial dose or after an increase in dosage strength. (notice Doxazosine, Mises en garde et précautions)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

If the patient develops a substantial increase in blood pressure and a previously undiagnosed pheochromocytoma is suspected, 5 to 10 mg of phentolamine mesylate, administered intravenously, has been shown to be effective in lowering blood pressure. (notice Glucagon, Mises en garde et précautions)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

Alpha Blockers tamsulosin Analgesics methadone alfentanil, buprenorphine IV and sublingual, fentanyl, oxycodone, sufentanil Methadone: The potential increase in plasma concentrations of methadone when coadministered with ketoconazole tablets may increase the risk of serious cardiovascular events including QT prolongation and torsade de pointes, or respiratory… (notice Kétoconazole, Interactions médicamenteuses)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

Intraoperative Effects While the preoperative use of metyrosine capsules in patients with pheochromocytoma is thought to decrease intraoperative problems with blood pressure control, metyrosine does not eliminate the danger of hypertensive crises or arrhythmias during manipulation of the tumor, and the alpha-adrenergic blocking drug, phentolamine, may be needed. (notice Métirosine, Mises en garde)

Central Alpha1-Blockers Doxazosin: Healthy volunteers participating in a multiple dose doxazosin-nifedipine interaction study received 2 mg doxazosin q.d. alone or combined with 20 mg nifedipine ER b.i.d. Co-administration of nifedipine resulted in a decrease in AUC and C max of doxazosin to 83% and 86% of the values in the absence of nifedipine, respectively. (notice Nifédipine, Interactions médicamenteuses)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

Alpha Blockers: Co-administration of beta-blockers with alpha-blocker (e.g., prazosin) has been associated with prolongation of first dose hypotension and syncope. (notice Propranolol, Interactions médicamenteuses)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

Lidocaine and Epinephrine When OraVerse was administered as an intraoral submucosal injection 30 minutes after injection of a local anesthetic, 2% lidocaine HCl with 1:100,000 epinephrine, the lidocaine concentration increased immediately after OraVerse intraoral injection. (notice Phentolamine, Interactions médicamenteuses)

Caution is advised when SILDENAFIL ORAL FILM is co-administered with alpha-blockers or antihypertensives. (notice Sildénafil, Mises en garde et précautions)

Alpha-Blockers : Caution is advised when PDE5 inhibitors are co-administered with alpha-blockers. (notice Vardénafil, Mises en garde et précautions)

Tachycardia and cardiac arrhythmiasmay occur with the use of phentolamine or other alpha-adrenergic blocking agents. (notice Phentolamine, Mises en garde et précautions)

If rebound hypertension occurs, reverse hypertensive crisis with oral clonidine or IV phentolamine. (notice Clonidine, Mises en garde et précautions)

Use in Patients with Pheochromocytoma If BREVIBLOC injection is used in the setting of pheochromocytoma, give it in combination with an alpha-blocker, and only after the alpha-blocker has been initiated. (notice Esmolol, Mises en garde et précautions)

Tachycardia and cardiac arrhythmiasmay occur with the use of phentolamine or other alpha-adrenergic blocking agents. (notice Phentolamine, Mises en garde et précautions)

Pheochromocytoma: Initiate therapy with an alpha blocker. (notice Métoprolol, Mises en garde et précautions)

Pheochromocytoma: First initiate therapy with an alpha blocker. (notice Métoprolol et hydrochlorothiazide, Mises en garde et précautions)

Alpha-adrenergic blocking agents, such as prazosin, terazosin, and doxazosin, can antagonize the effects of midodrine hydrochloride. (notice Midodrine, Interactions médicamenteuses)

Tachycardia and cardiac arrhythmiasmay occur with the use of phentolamine or other alpha-adrenergic blocking agents. (notice Phentolamine, Mises en garde et précautions)

Tachycardia and cardiac arrhythmiasmay occur with the use of phentolamine or other alpha-adrenergic blocking agents. (notice Phentolamine, Mises en garde et précautions)

Tachycardia and cardiac arrhythmiasmay occur with the use of phentolamine or other alpha-adrenergic blocking agents. (notice Phentolamine, Mises en garde et précautions)

Alpha-adrenergic Antagonists The administration of dutasteride capsules in combination with tamsulosin or terazosin has no effect on the steady-state pharmacokinetics of either alpha-adrenergic antagonist. (notice Dutastéride, Interactions médicamenteuses)