What does it typically interact with?
Enzyme inducer
Griseofulvin
Enzyme inducers
Carbamazepine
Griseofulvin
Phenytoin
Phenobarbital
St. Johns wort
Rifampicin
Rifabutin
EHC
Ulipristal
Efficacy reduced by drugs that increase gastric pH
- Antacids
- H2 receptor antagonists
- PPIs
Regular contraception
Use until 4 weeks after stopping interacting drug
- Copper IUD
- Progesterone only injections