Vitamin B

http://en.m.wikipedia.org/wiki/B_vitamins

http://en.m.wikipedia.org/wiki/Thiamine

http://en.m.wikipedia.org/wiki/Pyridoxine

http://en.m.wikipedia.org/wiki/Cyanocobalamin

A vitamin B complex is a dietary
supplement that contains all eight of the B vitamins: B1 (thiamine), B2 (riboflavin), B3
(niacin), B5 (pantothenic acid), B6, B7 (biotin), B9 (folate), B12. Also found naturally in a number foods, B vitamins help
the body to produce energy and form red
blood cells. Proponents suggest that taking
a vitamin B complex may help treat or
prevent certain health problems. Health Benefits of B Complex Supplements Each B vitamin is essential to certain bodily
functions: Studies show that taking supplements
containing certain B vitamins may benefit
your health. For instance:

B1 may help prevent kidney disease in
people with type 2 diabetes and reduce risk
of cataracts B2 may prevent migraines; B3 may lower
cholesterol levels B6 may protect against heart disease,
relieve PMS symptoms, and alleviate
pregnancy-related nausea B9 may help prevent breast cancer,
colorectal cancer, and pancreatic cancer, as
well as decrease risk of birth defects when
taken by pregnant women B12 may lower cervical cancer risk and
reduce levels of homocysteine (an amino
acid thought to contribute to heart disease
when it occurs at elevated levels)