Uric Acid is a chemical (waste product) produced by final oxidation (breakdown) of purines in the body, carried in the blood and excreted by the kidneys through urine. Formation of uric acid in the body is quite normal as it is a necessary substance in food metabolism. Uric acid is known to acts as an anti-oxidant and helps prevent damage to our blood vessels lining. But, higher levels of uric acid in the blood are harmful.