Vitamin B-50 Complex, Supports Energy Production, 250 Tablets, Source NaturalsVitamin B 50 Complex Each B vitamin fills a different, complementary, need, which is why they should most often be taken together. Supplement Facts Serving Size: 1 tablet Amount %DV Thiamin (vitamin B 1) 50 mg 33. 33 Riboflavin (vitamin B 2) 50 mg 29. 41 Niacinamide 50 mg 2. 5 Vitamin B 6 (as pyridoxine HCI) 50 mg 25 Folate (as folic acid) 100 mcg 0. 25 Vitamin B 12 (as cyanocobalamin) 50 mcg 8. 33 Biotin 50 mcg 0. 17 Pantothenic Acid (as calcium D