Desogestrel Rifampicin
ModerateThe leaflet only says that an effect "may be seen" when desogestrel is taken with rifampicin, but it does not say what that effect is. So all that can be said is that these two medicines are known to interact.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.