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).
WHY CITRATE. Mechanisms. Supersaturation with respect to the calcium stones depends upon urine concentrations of calcium, oxalate, phosphate, and citrate, and, in the case of calcium phosphate stones, or uric acid stones, urine pH. Giving citrate salts can reduce urine calcium excretion and increase urine citrate. Urine citrate binds urine calcium in a soluble citrate complex, which reduced calcium salt supersaturations. Citrate inhibits crystal formation, growth and aggregation. The alkaline citrate salts can raise urine pH.