Caruso's Natural Health Vitamin D3 1000IU is a one-a-day capsule designed to support those who require additional Vitamin D support for the maintenance of healthy bones, muscles, the immune and cardiovascular systems. Vitamin D controls calcium levels in the blood and also assists in the metabolism and absorption in bone mineralisation. Vitamin D3 is important for bone and muscle development, immune support, cardiovascular function and maintaining heart health. Vitamin D is absorbed in the skin through sunlight exposure and is then utilised throughout the body. Low vitamin D levels are therefore more commonly found in those people who have limited sunlight exposure, i.e. working indoors during the day. Carusos Vitamin D3 contains 1000IU of Vitamin D, providing a convenient one-a-day dose. Comes in pack of 500 Capsules.