Orotic acid is a substance naturally produced by human intestinal flora. This acid is also called vitamin B13 or pyrimidine acid. It is not actually a vitamin Chemicalbook biotin, but it was added to the laboratory animal diet in the 1960s and was classified as such. Added to food can promote heart health and show some vitamin like benefits.

Orotic acid also known as vitamin B13, is a nutrient. In the medical field, whey acid and its derivatives have good therapeutic effect on icteric hepatitis, fatty liver, acute and chronic hepatitis. As a nutritional cosmetic matrix, it can be well absorbed by the skin, promote cell metabolism, and significantly inhibit skin aging. Whey acid has been used in food and life sciences.