Vitamin B-50 is used to prevent vitamin deficiency caused by alcohol, certain illnesses and poor diet. The drug is a combination of B vitamins, including vitamin B-6, riboflavin, niacin, thiamine, folic acid and vitamin B-12.
This medication is usually taken once in a day or as directed by a doctor. There are many brands of vitamin B-50, some of which contain zinc, vitamin E, vitamin C and biotin, as stated by WebMD. This medication is available in various forms including tablets, capsules and liquid. A drug that contains vitamin B-12 needs to be placed below the tongue and left there for a while before swallowing, as stated by WebMD.