Health Aid Zimacal Effervescent Tablets is a dietary supplement containing calcium, magnesium, zinc and vitamin K & D. These effervescent tablets dissolve easily in water to create a tasty drink that helps support bone health, immune function and normal muscle function. The product comes in a package of 20 effervescent tablets that are suitable for vegetarians. The combination of minerals and vitamins in Zimacal works synergistically - calcium and vitamin D help maintain normal bones, magnesium contributes to normal muscle function, zinc supports immune system function, and vitamin K contributes to normal blood clotting. The effervescent formula allows for better absorption compared to regular tablets.