Vitamin B-12 is a vitamin used to treat Vitamin B-12 deficiency (low Vitamin B-12), sleeping problems, impaired mental functioning of the elderly, low sperm count, tinnitus (ringing of the ears), AIDS, asthma, and mutliple scierosis. Other names for Vitamin B-12 include: Bedumil, Cobamin, Cyanocobalaminum, Methylcobalamin, and cycobemin. Check with your doctor before taking Vitamin B-12