Dietary Supplement The #1 Bone-Building Calcium --3A Calcium (AAACa) is a patented, ionic calcium from Japan comprised of calcium oxide and calcium hydroxide. AAACa also is pontentiated with HAI (heated algal ingredient), a patented amino acid complex from super-heated hijiki seaweed. Tiny amounts of HAI have been scientifically show to significantly increase calcium absorption. In one study, the improvement was up to 4X greater. These two patented, natural ingredients are only available in 3A Calcium. --3A Calcium provides superior calcium absorption and parathyroid modulation. Backed by 20 years of clinical research and 30 published, scientific articles, 3A Calcium has shown consistent, significant increases in bone density. It is the #1 Bone-Building Calcium. New, Improves 3A Calcium --Per daily serving, 3A Calcium contains 1000 mg of AAACa calcium and now 1000 IU of vitamin D3. The 3A Calcium capsule remains one of the smallest sized calciuum capsules available.Serving Size:3 CapsuleServings Per Container:50 Amount Per Serving Vitamin D3 (cholecalciferol) 500IU Calcium (as calcium hydroxide & calcium oxide) 500mg HAl Amino Acid Extract (from sea algae), less than 1mg Other ingredients: Gelatin, citric acid, croscaremllose sodium, microcrystalline cellulose, magenesium stearate Suggested Use: Take 3 capsules in the morning and 3 capsules at bedtime, preferably with food. Adequate calcium and vitamind S, as part of a healthful diet throughout life, along with physical activity, may reduce the risk of osteoporosis in later life.Consult a health professional is you are pregnant, nursing or have chronic granulomatous disorders (CGD). Store in a cool, dry place. Keep out of reach of children. Do not use if bottle seal is broken or missing. Gluten Free. Lactose Free.