A member asked:

Can deworming medication (zestaval 200) have an effect on the performance of birth control pill (marvelon) 21 day pack?

A doctor has provided 1 answer
Dr. Carla Enriquez answered

Specializes in Pediatrics

Yes : It may affect the metabolism of your oral contraceptive to make it less effective. Please use an alternate form of birth control until you have finished the course of treatment. Additionally, zestaval can cause severe damage to a fetus, so it is particularly important that you practice responsible sex.

Answered 10/30/2012

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