Calcirol Sachet is used to manage vitamin D deficiency. It is also recommended to maintain strong bones and improve bone mineral density in people with osteoporosis and bone disorders. The presence of vitamin D3, a fat-soluble vitamin, helps the gut to absorb calcium from food. It also helps the body to maintain adequate levels of two minerals essential for bone health, calcium and phosphorus. This further enables the body to preserve bone health. The body makes vitamin D when our skin gets exposed to sunlight. Sunscreen, protective clothing, limited exposure to sunlight, dark skin, and age may reduce the absorption of the sun. As a result, the production rate of vitamin D in the body gets affected and may result in vitamin D3 deficiency. Thus, vitamin D3 in this capsule may help maintain vitamin D3 for better calcium absorption in the body. Along with that, this vitamin has a significant role in helping the absorption of calcium and phosphates from the bowel. The Indian council of medical research (ICMR) recommends a daily supplement of 400 IU/day of vitamin D3 for Indians, with an emphasis on outdoor activities to achieve adequate amounts of vitamin D. Lack of vitamin D can make you prone to numerous health complications such as osteoporosis, infections, allergies, autoimmune diseases, cardiovascular diseases, tuberculosis, depression, and even cancer. It is advised to maintain the level of vitamin D3 in the body. Do not take more than the recommended dose, as it may lead to various side effects, including excessive loss of calcium from the bones. If you have any doubts or wish to know the dose, consult your doctor before taking it.