Calgovit Calcium, Vitamin C and Vitamin D3 Effervescent Tablet is esily absorbed into the body and rich in calcium. It contains 500mg of calcium per tablet which comes as calcium carbonate. Vitamin C helps to boost the immune system and Vitamin D3 increases the absorption of calcium in the body. It is a lemon flavoured sugar free tablet that strengthens the joints and provides relief from pain associated with joint stifness and osteoporosis. Put a tablet in a glass of water, allow to dissolve completely and enjoy your delicious sugar-free lemon flavoured drink.