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).
You also can get vegan calcium tablets. Most forms of calcium sold is going to be a natural source of the mineral, not derived from milk. Calcium citrate and calcium carbonate are both vegan and readily available. You'll just have to ensure that nothing else in the pill is animal derived.ou also can get vegan calcium tablets. Most forms of calcium sold is going to be a natural source of the mineral, not derived from milk. Calcium citrate and calcium carbonate are both vegan and readily available. You'll just have to ensure that nothing else in the pill is animal derived.