B-Complex 100 by Solaray is a B-Complex supplement, in a base of whole rice and aloe vera gel concentrate. The vitamin B complex refers to all of the known essential water-soluble vitamins except for vitamin C. B-Complex vitamins include thiamine (vitamin B1), riboflavin (vitamin B2), niacin (vitamin B3), pantothenic acid (vitamin B5), pyridoxine (vitamin B6), biotin, folic acid and the cobalamins (vitamin B12). Each member of the B-complex has a unique structure and performs unique functions in the human body. Vitamins B1, B2, B3, and biotin participate in different aspects of energy production; vitamin B6 is essential for amino acid metabolism; and vitamin B12 and folic acid facilitate steps required for cell division. Each of these vitamins has many additional functions. Ingredients - per capsule: Thiamin (as Thiamine Mononitrate) (B-1) 100 mg; Riboflavin (Vitamin B-2) 100 mg; Niacin (as Niacinamide) 100 mg; Vitamin B-6 (as Pyridoxine HCl) 100 mg; Folic Acid 400 mcg; Vitamin B-12 100 mcg; Biotin 100 mcg; Pantothenic Acid (as d-Calcium Pantothenate) 100 mg; PABA (Para-Aminobenzoic Acid) 100 mg; Choline Bitartrate 100 mg; Inositol 100 mg Other Ingredients: Gelatin (capsule), magnesium stearate, Whole Food Base (whole rice concentrate including bran, germ and polishings and pure aloe vera gel) and silica