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).
Calcium Citrate. Calcium citrate, another type of calcium supplement, aids in the formation and maintenance of bone. This calcium comes in a pill form and effervescent tablets that dissolve in a glass of water. Effervescent tablets are a better option if you have difficulty swallowing pills. Both forms are available over the counter. Calcium citrate can be taken with or without food because it does not need stomach acids to promote effective absorption. Check the Label. Calcium lactate and calcium gluconate are two options for calcium supplementation. The supplements contain low amounts of elemental calcium combined with other sources such as salt.