About Vitamin B6
Active form is pyridoxal-5'-phosphate (P5P), a coenzyme involved in over 100 reactions including neurotransmitter synthesis and amino acid metabolism. Standard pyridoxine must be converted to P5P in the liver, while P5P supplements bypass this step. P5P also avoids the peripheral neuropathy risk seen with high-dose pyridoxine (over 100 mg/day long-term).
What Vitamin B6 supports
- Produces serotonin and dopamine
- Supports immune function
- Aids hemoglobin production
How much Vitamin B6 to take
Clinical studies typically use 25–100 mg of Vitamin B6. Common B-complex dose; UL is 100 mg/day.
- RDA
- 1.3 mg
- Upper limit (UL)
- 100 mg
- Effective range
- 25–100 mg
Forms of Vitamin B6 compared
- Pyridoxal-5-phosphate (P5P)PremiumActive coenzyme form — bypasses liver conversion.
- Pyridoxine HClBudgetMust be converted to active P5P
Clinical evidence
Strong clinical evidence. Cofactor in 100+ enzymatic reactions including neurotransmitter synthesis; P5P form bypasses liver conversion
NIH Fact Sheet