Youth Chi is an exceptional product to support bone density, support bone loss, and support bone mass density, without increasing estrogen levels. Calcium supplements are most commonly suggested for bone formation, but intake of calcium does not always mean that it is absorbed in the blood or into the bones. Contains: Proprietary Blend of - Rehmannia glutinosa, Dioscorea opposita, Lycium chinensis. Suggested usage 2 capsules after meal.