Word Origin & History. critical 1580s, censorious, from critic + -al (1). Meaning pertaining to criticism is from 1741; medical sense is from c.1600; meaning of the nature of a crisis is from 1640s; that of crucial is from 1841.
Calcium citrate is the calcium salt of citric acid. It is commonly used as a food additive (E333), usually as a preservative, but sometimes for flavor.In this sense, it is similar to sodium citrate.alcium citrate is also found in some dietary calcium supplements (e.g. Citracal).
1 Calcium citrate contains 21% elemental calcium. 2  This one has the advantage in that it can be taken with or without food, and is absorbed equally well. 3  It is useful for patients with inflammatory bowel disease, achlorhydria and some absorption disorders.t is found in many foods. We need to consume a certain amount of calcium to build and maintain strong bones and healthy communication between the brain and various parts of the body. The National Health Service (NHS) 1, UK, says there is more calcium in the human body than any other mineral.