Solgar Vitamin B-Complex Vitamin C Capsules is a food supplement rich in B complex vitamins such as vitamin B1 (thiamine), vitamin B6 (pyridoxine), vitamin B2 (riboflavin), vitamin B3 (niacin), vitamin B12 and biotin that help in the normal functioning of the nervous system and contribute to the normal functioning of energy-producing metabolism. The presence of vitamin C helps to strengthen the immune system.