The body cannot make vitamin C itself, but it must be supplied through the diet. Bioflavonoids are antioxidants. These compounds can protect your cells from free radical damage. Free radicals are toxins in the body that can damage healthy cells. When this happens it is called oxidative stress. Piperine Black pepper helps to promote the absorption of certain nutrients such as vitamins and minerals, therefore we are happy to combine vitamin C with Piperine for best absorption. Black pepper extract is also gentle on the stomach. Ingredients: Calcium l-ascorbate, citrus bioflavonoids ( Citrus Aurantium L., fruit), pullulan (capsule shell), microcrystalline cellulose (filler), magnesium salts of vegetable fatty acids (anti-caking agents), black pepper extract ( Piper Nigrum L, fruit ). Dosage: 1-3 capsules per day. Storage: Store dry with the lid closed and out of the reach of children. Dietary supplements should not be used as an alternative to a varied diet.