Excreted primarily while in the feces. Nearly all of renally filtered calcium is reabsorbed within the ascending limb on the loop of Henle as well as proximal and distal convoluted tubules. Also secreted by sweat glands. Pregnancy & Breastfeeding use Don't take Ostocal in 1-two hrs of using other medicines. https://osteocal-md64297.thezenweb.com/a-review-of-osteocal-md-65020523