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We favour P5P over standard pyridoxine for patients who have shown poor response to conventional B6, or who have conditions affecting hepatic B6 conversion. Pure Encapsulations has earned its place on our shelves through consistent formulation and minimal unnecessary additives. For anyone whose blood work flags low B6, or who is working on neurotransmitter or homocysteine support under clinical supervision, this is the form we reach for first.
About this product
P5P 50
P5P 50 by Pure Encapsulations delivers pyridoxal 5'-phosphate, the biologically active coenzyme form of vitamin B6. Unlike standard pyridoxine, P5P does not require hepatic conversion to become functional — it is ready for use by the body immediately. This matters for people with compromised liver function, certain genetic variants affecting B6 metabolism (including common MTHFR-adjacent polymorphisms), or those who have not responded well to standard B6 supplementation.
B6 as P5P is involved in over 100 enzymatic reactions, most notably in amino acid metabolism, the synthesis of neurotransmitters including serotonin, dopamine, and GABA, and the production of haemoglobin. It also plays a role in homocysteine regulation alongside folate and B12.
This supplement suits people with confirmed low B6 status on blood testing, those supporting mood and cognitive function under clinical guidance, women experiencing B6-responsive symptoms such as premenstrual mood changes or pregnancy-related nausea, and individuals on long-term medications known to deplete B6.
Pure Encapsulations is a practitioner-grade brand with a long-standing reputation for minimal excipient use and consistent formulation standards. The active form distinguishes this product from lower-cost pyridoxine supplements found on the high street.
What it does
Benefits
- 01
Active B6 form, no liver conversion required
- 02
Supports serotonin, dopamine, and GABA synthesis
- 03
Studied for homocysteine regulation alongside B12 and folate
- 04
May suit those with B6 metabolism polymorphisms
- 05
Relevant for B6-depleting medication use
Get the most from it
How to use
Take 1 capsule daily, or as directed by your healthcare practitioner. P5P can be taken with or without food. If you are taking other B-vitamin supplements, check for combined B6 intake to avoid exceeding recommended levels over extended periods.
What's inside
Ingredients
View full ingredient list
Pyridoxal 5' Phosphate (P5P) 50mg
Common questions
Frequently asked
What is the difference between P5P and regular vitamin B6?
Standard vitamin B6 supplements typically use pyridoxine, which must be converted by the liver into P5P before the body can use it. P5P is the active coenzyme form, so it bypasses that conversion step — particularly relevant if your liver function is compromised or if you carry genetic variants that slow the conversion process.
Who would benefit most from taking P5P specifically?
People with confirmed low B6 on a blood test, those on medications known to deplete B6 (such as certain oral contraceptives or isoniazid), women with B6-responsive premenstrual symptoms, and individuals managing elevated homocysteine alongside B12 and folate are all reasonable candidates. Speak to a clinician to confirm whether this form is appropriate for you.
Is it safe to take long term?
B6 supplementation at high doses over extended periods has been associated with peripheral neuropathy, so total daily intake from all sources should be monitored. At the dose in this product, use is generally considered appropriate under standard guidance, but ongoing use is best reviewed with a healthcare practitioner.
Can I take this alongside other B-vitamin supplements or a multivitamin?
Possibly, but check the B6 content across everything you are taking. Combining multiple B6-containing products can push total daily intake above levels considered safe for long-term use. A practitioner or pharmacist can help you assess your combined intake.
How will I know if it is working?
B6 status is measurable via blood testing — plasma pyridoxal 5'-phosphate is the most direct marker. Functional improvements (mood, energy, symptom relief) vary by individual and underlying reason for deficiency. If you started supplementing in response to a confirmed deficiency, retesting after 8 to 12 weeks gives the clearest picture.
Doctor-guided care
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