STD Home > More Medications That Interfere With Zarah

Barbiturates
Barbiturates may cause your body to metabolize the hormones in Zarah too quickly, possibly increasing your risk of pregnancy. Ask your healthcare provider if you should use a different method of contraception while taking a barbiturate.
 
Certain Seizure Medications
Some seizure medications may cause your body to metabolize the hormones in Zarah too quickly, potentially increasing your risk of pregnancy. Ask your healthcare provider if you should use a different method of contraception while taking a seizure medication.
 
Cyclosporine (Gengraf, Neoral, Sandimmune)
Zarah may increase the level of cyclosporine in your blood, possibly increasing the chance of side effects of cyclosporine. Talk with your healthcare provider before taking these drugs together. Your cyclosporine dosage may need to be reduced, or you may need to switch to a different method of contraception.
 
Heparin
Combining Zarah with heparin can increase the risk of high potassium levels in your blood (hyperkalemia). Your healthcare provider should check your potassium levels regularly while you are taking both of these medications.
 
Modafinil (Provigil)
Modafinil may make Zarah less effective, potentially increasing your risk of pregnancy. Talk with your healthcare provider if you are taking both of these drugs, as you may need to use a backup method of contraception.
 
Nonsteroidal Anti-Inflammatory Drugs (NSAIDs)
Taking Zarah with NSAIDs can increase the risk of high potassium levels in your blood (hyperkalemia). Occasional use of NSAIDs in healthy women who take Zarah should not usually be a problem. Check with your healthcare provider if you take NSAIDs regularly or if you take a large NSAID dosage.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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