A supplement labeled as a “Vitamin B Complex” means that the advised dose will contain all eight of the B Vitamins. This makes it easier for the consumer to ensure they are getting all the adequate amounts of B vitamins. The eight B Vitamins are B1 (thiamine), B2 (riboflavin), B3 (niacin), B5 (pantothenic acid), B6 (pyridoxine), B7 (biotin), B9 (Folic Acid) and Vitamin B12.
No, the Food and Drug Administration doesn’t regulate supplements and herbs. Therefore, it is important to be aware of any possible allergies you have, and always be sure to read product labels to be sure of dosage amounts, any warnings listed, ingredients, etc. And of course, always speak with a qualified health care provider about starting supplementation.