Metronidazole Metronidazole Fluorouracil
ModerateMetronidazole slows how the body clears fluorouracil, so fluorouracil can build up and cause more harmful side effects.
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.
What to do: Ask your doctor or pharmacist. They may check you or change the plan. Do not change any dose on your own.