Source Naturals® B-6 Time Release delivers 500 mg of vitamin B6, an essential nutrient that is necessary for the metabolism of fats, carbohydrates and proteins. Vitamin B6 is also vital for the synthesis of hemoglobin and for healthy red blood cell growth. Contains no yeast, dairy, egg, gluten, corn, soy or wheat, sugar, starch, preservatives, or artificial color, flavor or fragrance.