CALMIGHTY Calcium Citrate Malate 1000 mg + Vitamin D3 1000 I.U. + Magnesium 50 mg + Zinc 7.5 mg Tablets. Calcium Citrate Malate -1000mg -Vegetarian Calcium-Highly water soluble (97.8%) with high bioavailability.-Considerably better absorbed (36.46%) than calcium citrate Vitamin D “Michael Holick” MD, PhD, one of the leading researchers on vitamin D recommends 1,000 IU daily for everyone over the age of 1 year. Calcium Citrate Malate -1000mg Helps in the proper mineralization of the bones for further preventing osteoporosis.