3 diphosphoglycerate (phosphate); and a rather dubious supplement purported in the early 1940s to have a wide range of medicinal effects (pangamic acid). Of these, only phosphate appears to have some ...

Good vitamin B13 sources are root vegetables and whey. Vitamin B15 or pangamic acid has antioxidant properties. Vitamin B15 aids in lowering cholesterol blood levels, aids in protein synthesis ...