NU D3 300000IU Injection helps your body to absorb a mineral called calcium, which is important for maintaining strong bones. This medicine is used if your diet does not provide enough vitamin D and may be used to treat certain bone conditions such as thinning of the bones (osteoporosis). NU D3 300000IU Injection is given under the supervision of a healthcare professional and should not be self-administered. You should take it regularly to get the most benefit from it. If you are using it to treat osteoporosis you will be prescribed other medicines as well. This medicine may be only part of a complete program of treatment that also includes making changes to your diet and taking calcium and vitamin supplements. Learn about the foods you should eat to make sure you get enough calcium and vitamin D in your diet. It may cause pain, redness, and swelling at the site of injection in some people. If you take too much you may feel weakness, muscle pain, or have a metallic taste in your mouth. If any of these side effects persist or get worse, you should let your doctor know. They may be able to suggest ways to reduce or treat the side effects. Before taking this medicine, tell your doctor if you have high levels of calcium in your blood or if you have any preexisting medical conditions. Some other medicines can decrease the absorption of vitamin D3 so let your doctor know all other medicines you are taking to make sure you are safe. While using NU D3 300000IU Injection you may need extra blood tests and possibly X-rays.