Isoptin SR and Reyataz (Atazanavir Capsules)
Determining the interaction of Isoptin SR and Reyataz (Atazanavir Capsules) and the possibility of their joint administration.
In the database of official manuals used in the service creation an interaction registered by statistical results of studies was found, which can either lead to negative consequences for the patient health or strengthen a mutual positive effect. A doctor should be consulted to address the issue of joint drug administration.
Consumer:Using atazanavir together with verapamil can increase the risk of an irregular heart rhythm that may be serious. You should seek immediate medical attention if you develop sudden dizziness, lightheadedness, fainting, or irregular heartbeat during treatment with these drugs, whether together or alone. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Professional:MONITOR CLOSELY: Atazanavir has been shown to prolong the PR interval of the electrocardiogram in some patients. Theoretically, coadministration with other agents that prolong the PR interval (e.g., beta blockers, digoxin, lacosamide, mefloquine, verapamil) may result in elevated risk of conduction disturbances and atrioventricular block. In a pharmacokinetic study, no substantial additive effect on the PR interval was observed during coadministration of atazanavir (400 mg once a day) and atenolol (50 mg once a day). However, an additive effect cannot be excluded because data are limited and atazanavir has not been studied in combination with other agents that prolong the PR interval.
MANAGEMENT: Caution is advised if atazanavir is used concomitantly with other agents that prolong the PR interval, particularly those that are metabolized by CYP450 3A4 (e.g., verapamil), since atazanavir is an inhibitor of that isoenzyme.
- "Product Information. Reyataz (atazanavir)." Bristol-Myers Squibb, Princeton, NJ.
Generic Name: verapamil
Brand name: Calan SR, Isoptin SR, Calan, Verelan, Isoptin, Isoptin IV, Covera-HS, Verelan PM
Synonyms: n.a.
Generic Name: atazanavir
Brand name: Reyataz
Synonyms: Reyataz
In the course of checking the drug compatibility and interactions, data from the following reference sources was used: Drugs.com, Rxlist.com, Webmd.com, Medscape.com.
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