<unk> s are salts of<unk>  used in a number of conditions. Supplementation is generally only required when there is not enough<unk>  in the diet. By mouth they are used to treat and prevent low blood<unk> , osteoporosis, and rickets. By injection into a vein they are used for low blood<unk>  that is resulting in muscle spasms and for high blood potassium or magnesium toxicity. Common side effects include constipation and nausea. When taken by mouth high blood<unk>  is uncommon.<unk> s, unlike<unk>  from dietary sources, appear to increase the risk of kidney stones. Adults generally require about a gram of<unk>  a day.<unk>  is particularly important for bones, muscles, and nerves. The medical use of<unk> s began in the 19th century. It is on the World Health Organization's List of Essential Medicines. It is available as a generic medication. In 2017, it was the 262nd most commonly prescribed medication in the United States, with more than one million prescriptions. Versions are also sold together with vitamin D. The combination,<unk> /cholecalciferol was the 236th most commonly prescribed medication in the United States, with more than two million prescriptions.
Calcium supplement
Phosphate supplement
Protein supplement
Bodybuilding supplement
Soft diet
Phosphate binder
Iron supplement
Low-fat diet