Ribofal Riboflavin Multivitamin
ModerateVitamin C (ascorbic acid) and riboflavin can make the cancer medicine bleomycin stop working. If you are on bleomycin, tell your doctor or pharmacist before you take a multivitamin or riboflavin.
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.