B4 is also known as the nucleic acid adenine, Vitamin Bw, Vitamin Bp, and Leuco-4. Some conclude it may be a mixture of arginine, glycine, pyridoxine, and riboflavin, while others believe that it is a mixture of B2, B6, arginine, cystine, and glycine. It was formerly classified as a nucleic acid since it was found in RNA and DNA. It is found in plant and animal tissues and appears to be associated with Vitamin B3 (niacin). Although it does not have official vitamin status, it is required to build nucleic acids and plays a supporting role in the enzymes systems. •
Its deficiency causes muscular
weakness in rats and chicks. It is not established that this applies to humans, and
early experiments with this vitamin used impure sources containing riboflavin,
pyridoxine, arginine, cystine and glycine, among other substances. The term "vitamin
B4" was later also reused by some researchers denote choline.
In Studies: Within the European Union legislation, choline is classified as a vitamin.
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