Calcium in other words is limestone powder. Add pinch of limestone powder in a glass of milk. You can add turmeric and sugar if you wish. Not every day but, have that milk after every two days. It will increase the level of calcium in your body. Some people drink limestone water. To make limestone water put a limestone in a jar of water. After few reactions water will get heat up and limestone powder will settle down. The remaining water in the jar is consumed by some people to recover the calcium level in our body. Remember that you have to take only one spoon of that water every day. As a proper medical treatment you should take Majoon Akhrot Prash.