Features Pyridoxal- 5- Phosphate (P- 5- P), the coenzyme form of Vitamin B6.P- 5- P does not have to be converted in the body and can go directly into metabolic cycles; P- 5- P may be more Enhanceful as a Vitamin B6 Supplement than other forms.Vitamin B6 provides nutritive support for red blood cell synthesis and nerve tissue function as well as healthy protein metabolism and hormone synthesis.