Low Vitamin B6 (pyridoxine): what it means
A Vitamin B6 (pyridoxine) result below the normal range is considered low. Here is what a reduced Vitamin B6 (pyridoxine) can point to, and when it is worth discussing with a doctor.
Reference range: ~20–120 nmol/L (as pyridoxal-5-phosphate); both deficiency and excess (from over-supplementation) can cause nerve symptoms
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What a low Vitamin B6 (pyridoxine) can mean
- Poor diet or alcohol excess — often with other B-vitamin deficiencies.
- Malabsorption, kidney dialysis.
- Certain medications — isoniazid, some others, which can be given with B6 to prevent this.
- Effects — nerve symptoms, sore mouth, skin rash, sideroblastic anaemia, raised homocysteine.
When to discuss with a doctor
Vitamin B6 is not a routine test. It is worth checking in specific situations: to investigate unexplained nerve symptoms (both a deficiency and an excess can cause them — the latter increasingly seen with high-dose supplements), a sideroblastic anaemia, or a raised homocysteine, and in people at risk such as those with poor diet, alcohol excess or on certain medications. A key practical point is to review supplement use: high-dose B6 over time can cause a neuropathy that improves on stopping. Mediora.AI shows vitamin B6 alongside homocysteine and the other B vitamins so the pattern is read together; the interpretation and any supplement change belong with your doctor.
How to raise a low Vitamin B6 (pyridoxine)
- Eat more B6-rich foods - poultry, fish, potatoes, chickpeas, bananas and fortified cereals.
- A B-complex or B6 supplement corrects a deficiency, which is uncommon on a varied diet; your doctor can advise if needed.
- Certain conditions and drugs lower B6 - alcohol use, some epilepsy medications - worth reviewing with your doctor.
- Avoid very high-dose B6 supplements long-term - excess B6 can cause nerve symptoms, so more is not better.
- Recheck after your doctor advises.
General information, not a treatment plan - decisions about medication or target values belong with your doctor.
Conditions this can relate to
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Upload your test - freeMediora.AI is informational - interpretation, not a diagnosis. A single out-of-range value is common and often benign; always discuss decisions with your doctor.