Vitamin D
Vitamin D promotes intestinal calcium and phosphorous absorption and reduces urinary calcium loss, essential mechanisms for maintaining proper calcium levels in the body and for healthy bone composition.
Iron-C
The major function of iron is to combine with protein and copper in the synthesis of hemoglobin. Iron is necessary to manufacture myoglobin, a transporter of oxygen found in muscle tissue, which causes the chemical reactions that initiate muscle contractions. Vitamin C enhances the intestinal absorption of iron.