Inadequate levels of Vitamin D in the body is a global health problem that impacts muscle and bone health. Vitamin D can be manufactured by the body so Vitamin D supplements are not generally required. But some people find it difficult to get Vitamin D naturally through diet or are allergic to UV rays. Thus, Vitamin D capsules or tablets become a necessity. Vitamin D3 is essential for calcium and phosphorous absorption that helps support strong bones, muscle strength, and immunity. HealthKart hk vitals Vitamin D3 Supplement supplies this key nutrient in a highly absorbable form. These Vitamin D3 capsules (from the house of HealthKart) help in increasing muscle strength and getting stronger bones. Lack of Vitamin D3 in the body affects bone mineralization that can lead to porous bones in which you experience bone fracture easily. Vitamin D3 is important for normal muscle development and it helps to optimize muscle strength. Studies have shown that Vitamin D3 supplements may improve muscle performance. It also acts as an immunity booster for adults.