P5P (Active B6)
The active, coenzyme form of Vitamin B6 for enhanced bioavailability and direct use by the body.
Also known as: Pyridoxal-5-Phosphate • P5P
Overview
Pyridoxal-5-Phosphate (P5P) is the active, biologically available form of Vitamin B6. Unlike other forms, P5P does not need to be converted by the liver, making it a more efficient option for supporting energy metabolism, neurotransmitter function, and overall health. It is particularly beneficial for individuals with compromised liver function or B6 metabolism.
Key Benefits
Supports Energy Metabolism
P5P is a crucial cofactor in over 100 enzymatic reactions, including the metabolism of carbohydrates, fats, and proteins for energy.
Promotes Healthy Nervous System
It is essential for the synthesis of neurotransmitters like serotonin, dopamine, and GABA, which regulate mood and nerve function.
Enhances Immune Function
Vitamin B6 is involved in the production of immune cells and antibodies, helping to maintain a robust immune response.
Dosage & How to Take
P5P dosage should be tailored to individual needs. A common supplemental dose is between 25mg and 100mg per day. It is more potent than standard pyridoxine HCl.
| Purpose | Dose | Notes |
|---|---|---|
| General Health | 25-50mg | Once daily with a meal. |
| Mood Support | 50-100mg | May be taken in divided doses. |
| Hormone Balance (PMS) | 50-100mg | Taken daily, may be increased in the luteal phase. |
Best Time to Take
Can be taken at any time of day. Taking it with food can enhance absorption and prevent potential stomach upset.
With or Without Food
Recommended to be taken with a meal.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| P5P (Pyridoxal-5-Phosphate) | High | Immediate use by the body, individuals with conversion issues. | The most bioactive form of Vitamin B6. |
| Pyridoxine HCl | Medium | General supplementation in healthy individuals. | Requires conversion by the liver to P5P. |
Side Effects & Safety
Common
- Nausea (at high doses)
Rare
- Sensory neuropathy (with chronic high doses >200mg/day)
- Headaches
Contraindications
- Levodopa therapy (for Parkinson's disease)
Interactions
Vitamin B6 can reduce the effectiveness of Levodopa. P5P may have a similar interaction.
High doses of Vitamin B6 may decrease blood levels of phenytoin.
May increase the risk of photosensitivity.
Scientific Research
The role of pyridoxine in human metabolism
Vitamin B6, in its active P5P form, is a critical coenzyme in a vast array of metabolic processes.
Vitamin B6 and the nervous system
P5P is essential for the synthesis of key neurotransmitters, and deficiency is linked to neurological and psychological disturbances.
Food Sources
Products With P5P (Active B6)
2 products in our database contain this ingredient
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.