Answer
Yes, rifampicin can reduce Drovelis’s contraceptive effectiveness by inducing enzymes that increase sex-hormone clearance, potentially causing breakthrough bleeding and/or contraceptive failure.
Sources for this answer
- Drovelis 3 mg/14.2 mg film-coated tabletsGedeon Richter (UK) Ltd · emc · SmPC §4.5 Interaction with other medicinal products · Version 6Document updated
Sources checked