MAXI CAL is a high-calcium formula (600mg) with 100iu of Vitamin D, which works with Calcium. MAXI CAL IS BENEFICIAL FOR: Backaches, Joint Pains and Arthritis. Menstrual Cramps. Teenage 'growing pains'. Hypoglycemic conditions (low blood sugar). Mental functions. Toxic metal exposure. Allergies. Post-Menopausal Women. WHY TAKE CALCIUM? Of the body's total calcium needs, 90% is for skeletal and tooth development. 20% needs to be replaced annually. Calcium helps in the body's biochemical functions and keeps the heart beating. It assists the nervous system to metabolize iron and help insomnia. Calcium deficiency leads to tooth loss and weak, brittle bones.