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).
The calcium in most supplements is either in the form of calcium carbonate or calcium citrate. Research shows that they are absorbed equally well with meals, but calcium carbonate is harder to digest than calcium citrate.People are usually advised to take calcium carbonate with or soon after a meal.ost of the calcium in the American diet comes from dairy products. Not only do they contain a lot of the mineral, but it's in a form that's easy to digest and absorb. An 8-ounce serving of plain yogurt provides about 400 mg of calcium; an 8-ounce glass of milk, 300 mg; and a slice of cheddar cheese, 200 mg.