Wechselwirkungen von Zafirlukast

Co-administration of such combinations of a CYP2C9 inhibitor plus a strong or moderate CYP3A inhibitor with TRACLEER is not recommended. (Fachinformation zu Bosentan, Arzneimittelwechselwirkungen)

Moderate dual CYP3A4 and CYP2C9 inhibitors (fluconazole, amiodarone) or use of combined CYP3A4 and CYP2C9 inhibitors may increase exposure to macitentan: avoid co-administration with OPSUMIT ( 7.3 , 12.3 ). (Fachinformation zu Macitentan, Arzneimittelwechselwirkungen)

Coadministration of zafirlukast (40 mg/day) with aspirin (650 mg four times daily) resulted in mean increased plasma levels of zafirlukast by approximately 45%. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Coadministration of zafirlukast (40 mg/day) with aspirin (650 mg four times daily) resulted in mean increased plasma levels of zafirlukast by approximately 45%. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Coadministration of zafirlukast (20 mg/day) or placebo at steady-state with a single dose of sustained release theophylline preparation (16 mg/kg) in 16 healthy boys and girls (6 through 11 years of age) resulted in no significant differences in the pharmacokinetic parameters of theophylline. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Coadministration of zafirlukast (20 mg/day) or placebo at steady-state with a single dose of sustained release theophylline preparation (16 mg/kg) in 16 healthy boys and girls (6 through 11 years of age) resulted in no significant differences in the pharmacokinetic parameters of theophylline. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Patients on oral warfarin anticoagulant therapy and zafirlukast should have their prothrombin times monitored closely and anticoagulant dose adjusted accordingly (see PRECAUTIONS, Drug Interactions ). (Fachinformation zu Zafirlukast, Warnhinweise)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Patients on oral warfarin anticoagulant therapy and zafirlukast should have their prothrombin times monitored closely and anticoagulant dose adjusted accordingly (see PRECAUTIONS, Drug Interactions ). (Fachinformation zu Zafirlukast, Warnhinweise)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

HIV Protease inhibitor — Ritonavir (600 mg twice daily), a strong CYP3A4 inhibitor, which also inhibits CYP2C9, increased avanafil 50 mg single-dose C max and AUC equal to approximately 2-fold and 13-fold, and prolonged the half-life of avanafil to approximately 9 hours in healthy volunteers. (Fachinformation zu Avanafil, Arzneimittelwechselwirkungen)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Patients on oral warfarin anticoagulant therapy and zafirlukast should have their prothrombin times monitored closely and anticoagulant dose adjusted accordingly (see PRECAUTIONS, Drug Interactions ). (Fachinformation zu Zafirlukast, Warnhinweise)

Coadministration of zafirlukast (40 mg/day) with aspirin (650 mg four times daily) resulted in mean increased plasma levels of zafirlukast by approximately 45%. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Coadministration of zafirlukast (40 mg/day) with aspirin (650 mg four times daily) resulted in mean increased plasma levels of zafirlukast by approximately 45%. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Coadministration of zafirlukast (20 mg/day) or placebo at steady-state with a single dose of sustained release theophylline preparation (16 mg/kg) in 16 healthy boys and girls (6 through 11 years of age) resulted in no significant differences in the pharmacokinetic parameters of theophylline. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Coadministration of zafirlukast (20 mg/day) or placebo at steady-state with a single dose of sustained release theophylline preparation (16 mg/kg) in 16 healthy boys and girls (6 through 11 years of age) resulted in no significant differences in the pharmacokinetic parameters of theophylline. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Amiodarone Amiodarone and its metabolite desethyl amiodarone, inhibitors of CYP2C9, and P- glycoprotein increased concentrations of the S(-)-enantiomer of carvedilol by at least 2 fold [see Clinical Pharmacology (12.5) ]. (Fachinformation zu Carvedilol, Arzneimittelwechselwirkungen)

Co-administration of celecoxib with drugs that are known to inhibit CYP2C9 (e.g., fluconazole) may enhance the exposure and toxicity of celecoxib whereas co-administration with CYP2C9 inducers (e.g., rifampin) may lead to compromised efficacy of celecoxib. (Fachinformation zu Celecoxib, Arzneimittelwechselwirkungen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Patients on oral warfarin anticoagulant therapy and zafirlukast should have their prothrombin times monitored closely and anticoagulant dose adjusted accordingly (see PRECAUTIONS, Drug Interactions ). (Fachinformation zu Zafirlukast, Warnhinweise)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Co-administration of diclofenac with CYP2C9 inhibitors (e.g. voriconazole) may enhance the exposure and toxicity of diclofenac whereas co- administration with CYP2C9 inducers (e.g. rifampin) may lead to compromised efficacy of diclofenac. (Fachinformation zu Diclofenac, Arzneimittelwechselwirkungen)

Co-administration of diclofenac with CYP2C9 inhibitors (e.g., voriconazole) may enhance the exposure and toxicity of diclofenac [see Clinical Pharmacology (12.3) ] whereas co-administration with CYP2C9 inducers (e.g., rifampin) may lead to compromised efficacy of diclofenac. (Fachinformation zu Diclofenac und Misoprostol, Arzneimittelwechselwirkungen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Inhibitors of this isoenzyme (e.g., macrolide antibiotics, azole antifungal agents, protease inhibitors, serotonin reuptake inhibitors, amiodarone, cannabinoids, diltiazem, grapefruit juice, nefazadone, norfloxacin, quinine, zafirlukast) should be cautiously co-administered with dofetilide as they can potentially increase dofetilide levels. (Fachinformation zu Dofetilid, Arzneimittelwechselwirkungen)

Monitor for increased dronabinol-related adverse reactions when dronabinol oral solution is co-administered with inhibitors of CYP2C9 (e.g., amiodarone, fluconazole) and inhibitors of CYP3A4 enzymes (e.g., ketoconazole, itraconazole, clarithromycin, ritonavir, erythromycin, grapefruit juice). (Fachinformation zu Dronabinol, Arzneimittelwechselwirkungen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Patients on oral warfarin anticoagulant therapy and zafirlukast should have their prothrombin times monitored closely and anticoagulant dose adjusted accordingly (see PRECAUTIONS, Drug Interactions ). (Fachinformation zu Zafirlukast, Warnhinweise)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Effect of TRIKAFTA on Other Drugs CYP2C9 Substrates Ivacaftor may inhibit CYP2C9; therefore, monitoring of the international normalized ratio (INR) during concomitant use of TRIKAFTA with warfarin is recommended. (Fachinformation zu Elexacaftor, Tezacaftor und Ivacaftor, Arzneimittelwechselwirkungen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Patients on oral warfarin anticoagulant therapy and zafirlukast should have their prothrombin times monitored closely and anticoagulant dose adjusted accordingly (see PRECAUTIONS, Drug Interactions ). (Fachinformation zu Zafirlukast, Warnhinweise)

Coadministration of zafirlukast (20 mg/day) or placebo at steady-state with a single dose of sustained release theophylline preparation (16 mg/kg) in 16 healthy boys and girls (6 through 11 years of age) resulted in no significant differences in the pharmacokinetic parameters of theophylline. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a drug interaction study in 11 asthmatic patients, coadministration of a single dose of zafirlukast (40 mg) with erythromycin (500 mg three times daily for 5 days) to steady-state resulted in decreased mean plasma levels of zafirlukast by approximately 40% due to a decrease in zafirlukast bioavailability. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Coadministration of zafirlukast (20 mg/day) or placebo at steady-state with a single dose of sustained release theophylline preparation (16 mg/kg) in 16 healthy boys and girls (6 through 11 years of age) resulted in no significant differences in the pharmacokinetic parameters of theophylline. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Coadministration of zafirlukast with fluconazole, a moderate CYP2C9 inhibitor, resulted in increased plasma levels of zafirlukast, by approximately 58% (90% CI:28, 95). (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Patients on oral warfarin anticoagulant therapy and zafirlukast should have their prothrombin times monitored closely and anticoagulant dose adjusted accordingly (see PRECAUTIONS, Drug Interactions ). (Fachinformation zu Zafirlukast, Warnhinweise)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Patients on oral warfarin anticoagulant therapy and zafirlukast should have their prothrombin times monitored closely and anticoagulant dose adjusted accordingly (see PRECAUTIONS, Drug Interactions ). (Fachinformation zu Zafirlukast, Warnhinweise)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Strong CYP3A4 or CYP2C9 Inhibitors Patients with renal or hepatic impairment who are taking strong inhibitors of CYP3A4 and CYP2C9 may have a significant increase in exposure to VIMPAT. (Fachinformation zu Lacosamid, Arzneimittelwechselwirkungen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Thus concomitant usage of CYP2C9 inhibitors (such as amiodarone, fluconazole, and sulphaphenazole) may lead to abnormally high plasma levels of meloxicam due to reduced metabolic clearance [ see Use in Specific Populations ( 8.8 ); and Clinical Pharmacology ( 12.3 , 12.5 ) ]. (Fachinformation zu Meloxicam, Arzneimittelwechselwirkungen)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

…salicylates, monoamine oxidase inhibitors, non-selective beta-adrenergic-blocking agents, anabolic hormones (e.g., methandrostenolone), guanethidine, gymnema sylvestre, glucomannan, thioctic acid, and inhibitors of CYP2C9 (e.g., amiodarone, fluconazole, voriconazole, sulfinpyrazone) or in patients known to be poor metabolizers of CYP2C9 substrates, alcohol. (Fachinformation zu Nateglinid, Arzneimittelwechselwirkungen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Coadministration of zafirlukast (40 mg/day) with aspirin (650 mg four times daily) resulted in mean increased plasma levels of zafirlukast by approximately 45%. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Coadministration of zafirlukast (20 mg/day) or placebo at steady-state with a single dose of sustained release theophylline preparation (16 mg/kg) in 16 healthy boys and girls (6 through 11 years of age) resulted in no significant differences in the pharmacokinetic parameters of theophylline. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Fluconazole (strong CYP2C9 inhibitor): Increases systemic exposure of ramelteon; administer with caution. (Fachinformation zu Ramelteon, Arzneimittelwechselwirkungen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Patients on oral warfarin anticoagulant therapy and zafirlukast should have their prothrombin times monitored closely and anticoagulant dose adjusted accordingly (see PRECAUTIONS, Drug Interactions ). (Fachinformation zu Zafirlukast, Warnhinweise)

Rosuvastatin plasma levels can be significantly increased with concomitant administration of inhibitors of CYP2C9 and transporters. (Fachinformation zu Rosuvastatin, Arzneimittelwechselwirkungen)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Coadministration of zafirlukast (20 mg/day) or placebo at steady-state with a single dose of sustained release theophylline preparation (16 mg/kg) in 16 healthy boys and girls (6 through 11 years of age) resulted in no significant differences in the pharmacokinetic parameters of theophylline. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

CYP2C9: Concomitant use with CYP2C9 inhibitors can decrease torsemide clearance. (Fachinformation zu Torasemid, Arzneimittelwechselwirkungen)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Zafirlukast exposure is likely to be increased by other moderate and strong CYP2C9 inhibitors. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Concomitant Warfarin Administration: Coadministration of zafirlukast with warfarin results in a clinically significant increase in prothrombin time (PT). (Fachinformation zu Zafirlukast, Warnhinweise)

No other formal drug-drug interaction studies between zafirlukast and marketed drugs known to be metabolized by the P450 3A4 (CYP3A4) isoenzyme (e.g., dihydropyridine calcium-channel blockers, cyclosporin, cisapride) have been conducted. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

No other formal drug-drug interaction studies between zafirlukast and marketed drugs known to be metabolized by the P450 3A4 (CYP3A4) isoenzyme (e.g., dihydropyridine calcium-channel blockers, cyclosporin, cisapride) have been conducted. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

No other formal drug-drug interaction studies between zafirlukast and marketed drugs known to be metabolized by the P450 3A4 (CYP3A4) isoenzyme (e.g., dihydropyridine calcium-channel blockers, cyclosporin, cisapride) have been conducted. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

No other formal drug-drug interaction studies between zafirlukast and marketed drugs known to be metabolized by the P450 3A4 (CYP3A4) isoenzyme (e.g., dihydropyridine calcium-channel blockers, cyclosporin, cisapride) have been conducted. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

No other formal drug-drug interaction studies between zafirlukast and marketed drugs known to be metabolized by the P450 3A4 (CYP3A4) isoenzyme (e.g., dihydropyridine calcium-channel blockers, cyclosporin, cisapride) have been conducted. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

An open-label, nonrandomized clinical study examined the immune responsiveness to varicella vaccine in 243 asthma patients 12 months to 8 years of age who were treated with budesonide inhalation suspension 0.25 mg to 1 mg daily (n=151) or non-corticosteroid asthma therapy (n=92) (i.e., beta 2 -agonists, leukotriene receptor antagonists, cromones). (Fachinformation zu Budesonid, Warnhinweise und Vorsichtsmaßnahmen)

An open-label, nonrandomized clinical study examined the immune responsiveness to varicella vaccine in 243 asthma patients 12 months to 8 years of age who were treated with budesonide inhalation suspension 0.25 mg to 1 mg daily (n=151) or noncorticosteroid asthma therapy (n=92) (i.e., beta 2 -agonists, leukotriene receptor antagonists, cromones). (Fachinformation zu Budesonid und Formoterol, Warnhinweise und Vorsichtsmaßnahmen)

No formal drug-drug interaction studies with zafirlukast and other drugs known to be metabolized by the cytochrome P450 2C9 isoenzyme (e.g., tolbutamide, phenytoin, carbamazepine) have been conducted; however, care should be exercised when zafirlukast is coadministered with these drugs . (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

However, at high concentrations in vitro , clopidogrel inhibits CYP2C9. (Fachinformation zu Clopidogrel, Arzneimittelwechselwirkungen)

No other formal drug-drug interaction studies between zafirlukast and marketed drugs known to be metabolized by the P450 3A4 (CYP3A4) isoenzyme (e.g., dihydropyridine calcium-channel blockers, cyclosporin, cisapride) have been conducted. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

No other formal drug-drug interaction studies between zafirlukast and marketed drugs known to be metabolized by the P450 3A4 (CYP3A4) isoenzyme (e.g., dihydropyridine calcium-channel blockers, cyclosporin, cisapride) have been conducted. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

No other formal drug-drug interaction studies between zafirlukast and marketed drugs known to be metabolized by the P450 3A4 (CYP3A4) isoenzyme (e.g., dihydropyridine calcium-channel blockers, cyclosporin, cisapride) have been conducted. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

No other formal drug-drug interaction studies between zafirlukast and marketed drugs known to be metabolized by the P450 3A4 (CYP3A4) isoenzyme (e.g., dihydropyridine calcium-channel blockers, cyclosporin, cisapride) have been conducted. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

No other formal drug-drug interaction studies between zafirlukast and marketed drugs known to be metabolized by the P450 3A4 (CYP3A4) isoenzyme (e.g., dihydropyridine calcium-channel blockers, cyclosporin, cisapride) have been conducted. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

No other formal drug-drug interaction studies between zafirlukast and marketed drugs known to be metabolized by the P450 3A4 (CYP3A4) isoenzyme (e.g., dihydropyridine calcium-channel blockers, cyclosporin, cisapride) have been conducted. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

No other formal drug-drug interaction studies between zafirlukast and marketed drugs known to be metabolized by the P450 3A4 (CYP3A4) isoenzyme (e.g., dihydropyridine calcium-channel blockers, cyclosporin, cisapride) have been conducted. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

No formal drug-drug interaction studies with zafirlukast and other drugs known to be metabolized by the cytochrome P450 2C9 isoenzyme (e.g., tolbutamide, phenytoin, carbamazepine) have been conducted; however, care should be exercised when zafirlukast is coadministered with these drugs . (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

No other formal drug-drug interaction studies between zafirlukast and marketed drugs known to be metabolized by the P450 3A4 (CYP3A4) isoenzyme (e.g., dihydropyridine calcium-channel blockers, cyclosporin, cisapride) have been conducted. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

Fluconazole is an inhibitor of CYP2C9 and CYP3A enzymes. (Fachinformation zu Terbinafin, Arzneimittelwechselwirkungen)

Toremifene is a weak inhibitor of CYP2C9. (Fachinformation zu Toremifen, Arzneimittelwechselwirkungen)

The interaction is a consequence of blocking hepatic metabolism of vardenafil by ritonavir, a HIV protease inhibitor and a highly strong CYP3A4 inhibitor, which also inhibits CYP2C9. (Fachinformation zu Vardenafil, Arzneimittelwechselwirkungen)

CYP2C9 Venlafaxine did not inhibit CYP2C9 in vitro . (Fachinformation zu Venlafaxin, Arzneimittelwechselwirkungen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)

In a single-blind, parallel-group, 3-week study in 39 healthy female subjects taking oral contraceptives, 40 mg twice daily of zafirlukast had no significant effect on ethinyl estradiol plasma concentrations or contraceptive efficacy. (Fachinformation zu Zafirlukast, Vorsichtsmaßnahmen)