Good morning, Does the use of trioxal affect the effectiveness of Zoely contraceptive pills? On the leaflet of trioxal it is written that this drug can cause disorders of the menstrual cycle. In this case, does this mean a reduction in the effectiveness of contraception by affecting the cycle?
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Katarzyna Kosińska Pharmacist, Editor
2 years ago
Yes, the concomitant use of Trioxal and Zoely is not recommended due to a conflict that occurs when metabolising both medicines. The combined administration of these preparations may cause an increase in the plasma concentration of the active substance contained in Zoely tablets - the result may be an increase in side effects. In this situation, it is also difficult to assess the effectiveness of contraception. Consultation with the gynecologist indicated to discuss another treatment option. I encourage you to read: https://www.gdziepolek.pl/artykuly/jakie-leki-oslabiaja-skutecznosc-antykoncepcji