Answer
Rifampicin may increase the metabolism of Indivina's oestrogen and progestagen by inducing drug-metabolising enzymes, potentially reducing its effect and changing the uterine bleeding profile.
Sources for this answer
- Indivina 1 mg/5 mg tabletsOrion Pharma (UK) Limited · emc · SmPC §4.5 Interaction with other medicinal products · Version 9Document updated
Sources checked