Nature Made Sublingual Vitamin B12 1000 mcg fast dissolve tablets help break down food into energy that your body can use all day long. Sourced from high-quality global ingredients, this B12 vitamin is a dietary supplement that is sugar free and has no color added. This Vitamin B12 dietary supplement supports energy metabolism(1). B12 vitamins help reduce fatigue for those low in Vitamin B12. Adults take one Nature Made Vitamin B12 sublingual 1000 mcg fast dissolve tablet daily with a meal.