Posture - D tablets Contains Phosphorus for healthy bones. Posture - D 600 Mg Calcium Supplement With Vitamin D is a Unique Calcium Supplement. Calcium Alone is Not Enough for Healthy Bones600 mg Calcium in Every Caplet. It is formulated with Tricalcium Phosphate. Posture-D is a unique calcium supplement. Formulated with tricalcium phosphate as easily absorbed as calcium from milk. Contains phosphorus: because calcium alone is not enough for healthy bones. 600 mg calcium in every caplet 120% daily calcium in only 2 caplets. Vitamin D and magnesium, help your body absorb calcium. New coated and scored caplet: easier to swallow. Phosphorus is an essential component of bone, with 85% of the phosphorus in your body found in your bones. According to recent studies, consuming calcium with phosphorus is more effective at building strong bones than consuming calcium alone. If you are among the 50 million American women who don't obtain the daily RDI for phosphorus from their normal diet. You need Posture-D, the only leading calcium supplement that contains the ratio of calcium to phosphorus found in healthy bones.