Sustained release b complex is a specialized formulation of b vitamins that are released into system gradually over time. Type of supplement is designed to provide a steady supply of b-vitamins throughout the day. Supplement FactsServing Size: 1 Tablet. Amount Per Serving % Daily Value Vitamin B1 (as thiamin HCl)50 mg4,167% Vitamin B2 (as riboflavin)50 mg3,846% Niacin (as niacinamide)50 mg313% Vitamin B6 (as pyridoxine HCl)50 mg2,941% Folate167 mcg DFE (100 mcg of folic acid)42% Vitamin B12 (as cyanocobalamin)50 mcg2,083% Biotin50 mcg167% Pantothenic acid (as d-calcium pantothenate)50 mg1,000% Calcium (as dicalcium phosphate)100 mg8% Choline (as choline bitartrate)50 mg9% Inositol50 mg* PABA (para-aminobenzoic acid)30 mg* Base blend: Alfalfa leaf, parsley leaf, rice bran, soy lecithin, watercress leaf1 mg* *The % Daily Value (DV) tells how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice. Other Ingredients: Dicalcium Phosphate, Microcrystalline Cellulose, Stearic Acid, Croscarmellose Sodium, Silica, Magnesium Stearate, And Coating (Hypromellose, Glycerin, Carnauba Wax, Talc).