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Common side effects include constipation and nausea. [1] When taken by mouth high blood calcium is uncommon. [1] Calcium supplements, unlike calcium from dietary sources, appear to increase the risk of kidney stones. [1] Adults generally require about a gram of calcium a day. [1] Calcium is particularly important for bones, muscles, and nerves. [1]
It is usually made from calcium-high materials; the calcium helps the bird in egg shell production. Soluble grit can be made from limestone or coarsely ground or broken seashells, like oyster or mussel shells; this kind of grit is also called shell grit. [1] Other uses for shell grit include protecting plants from slugs or snails [2] and for ...
The shell of an oyster; A product made from the shell of the oyster, such as calcium supplements for humans or laying hens; Oystershell scale, a type of insect; Oystershell NV, a technology company in over-the-counter medicinal products
Dietary sources of calcium include dairy products, leafy greens, legumes, and beans. [137] There has been conflicting evidence about whether or not dairy is an adequate source of calcium to prevent fractures. The National Academy of Sciences recommends 1,000 mg of calcium for those aged 19–50, and 1,200 mg for those aged 50 and above. [138]
Vitamin D compounds, specifically cholecalciferol (D3) and ergocalciferol (D2), are used in rodenticides due to their ability to induce hypercalcemia, a condition characterized by elevated calcium levels in the blood. This overdose leads to organ failure and is pharmacologically similar to vitamin D's toxic effects in humans.
Established in 1979 in Flanders, Belgium, Oystershell was originally a miller of oyster calcium carbonate for laying hens. In the 1980s it gradually evolved from this agricultural background to veterinary medicines. Since a management buy-out in 2002 it is owned by the current management and the biotech investor Rudi Mariën.