Thiotepa Erythromycin
ModerateTaking thiotepa with CYP2B6 inhibitors or CYP3A4 inhibitors like erythromycin may increase the plasma concentrations of thiotepa and potentially decrease the concentrations of the active metabolite TEPA.
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.