Calcium Plus by Optima Naturals is a dietary supplement in calcium calcium carbonate and calcium citrate tablets, with vitamin D3 and Vitamin K2. Calcium Plus is the exclusive formulation of Optima Naturals for a correct calcium supplementation supported by the right amount of vitamins D3 and K1. Calcium is the most abundant macro-mineral present in the body, the role of which is of fundamental importance. 99% localized in the bones and teeth, it promotes their maintenance, it is also indispensable for the functioning of the nervous and muscular system, of which it regulates excitability and contraction. Vitamin D3 is synthesized in the skin following sun exposure and its synthesis can decrease in particular during the winter months, it is important because it contributes to the normal absorption / use of calcium and phosphorus as well as maintaining normal blood calcium levels . Vitamin K1 acts as a coenzyme, making certain proteins such as osteocalcin and the Gla protein of the bone matrix active. It is recommended to take before meals with a little water or other drink. Carefully read the warnings and instructions for use on the label. Do not exceed the recommended daily doses. Keep out of the reach of children under 3 years. Food supplements are not intended as a substitute for a varied and balanced diet. Store in a cool, dry place, away from light.