SEMA LAB Calcium + D3 + vitamin K2 MK-7 is a food supplement in the form of tablets designed to supplement the daily diet of adults. Each tablet contains calcium carbonate, vitamin D in the form of cholecalciferol and vitamin K in the form of menaquinone-7 (MK-7). SEMA LAB Calcium + vitamin D3 + vitamin K2 MK-7 – find out how the ingredients work Calcium and helps to keep you healthy . In addition, calcium and vitamin D support proper muscle function and are necessary for maintaining healthy teeth . Vitamin K contributes to maintaining proper blood clotting. To obtain the beneficial effect resulting from the declared action, it is recommended to consume 2 tablets of the preparation daily. One package contains 60 tablets, which is enough for an adult for a month of daily use.