Pyridoxine Deficiency: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Pyridoxine Deficiency?
A primary care doctor, such as a family medicine or internal medicine doctor, usually diagnoses and treats vitamin B6 deficiency. If nerve damage is severe or the cause is unclear, the doctor may refer the patient to a neurologist. People with kidney disease may also see a nephrologist.
What is pyridoxine deficiency?
Pyridoxine deficiency means the body does not have enough vitamin B6. Vitamin B6 is a nutrient that helps the brain, nerves, blood, and immune system work normally. People with low levels may feel tired or confused, and they may have numbness or tingling in their hands and feet. A doctor can check for it with blood tests and treat it with vitamin B6 supplements.
Pyridoxine is the scientific name for vitamin B6. The body cannot make it, so it must come from food. Vitamin B6 helps break down protein, make brain chemicals that control mood and sleep, and produce hemoglobin, which carries oxygen in red blood cells.
Symptoms
Common signs include tiredness, confusion, irritability, and low mood. Some people develop numbness, tingling, or burning pain in the hands and feet. Other signs include a sore tongue, weakness, and getting sick more easily.
Causes and who gets it
The most common cause is a diet low in vitamin B6, but true deficiency from food alone is rare. Certain medicines, such as some tuberculosis drugs and seizure medicines, can lower levels. People with kidney disease, celiac disease, or alcohol use disorder are also at higher risk.
How doctors diagnose it
Doctors ask about symptoms, diet, and medicines and do a physical exam. A blood test can measure vitamin B6 levels. Other tests may rule out conditions with similar symptoms.
Treatment
Treatment is usually a vitamin B6 supplement taken by mouth, in a dose set by a doctor. Eating more vitamin B6-rich foods, such as chicken, fish, potatoes, and bananas, also helps. If a medicine is the cause, the doctor may adjust it. Nerve symptoms often improve over weeks to months.
When to see a doctor
Anyone with ongoing tiredness, confusion, numbness, or tingling should talk to a doctor, since these symptoms can have many causes. People taking medicines known to lower vitamin B6, or with kidney disease or celiac disease, should mention their risk during checkups. Sudden weakness, seizures, or severe confusion need immediate medical attention.
How a direct primary care or concierge doctor fits in
A direct primary care or concierge doctor can often manage this problem directly, offering longer appointments to review diet, medicines, and lab results carefully.
Common questions
Can I just take a B6 supplement without asking a doctor?
It is best to talk to a doctor first. Too much vitamin B6 over time can actually cause nerve damage. More is not always better.
What foods contain vitamin B6?
Good sources include chicken, fish, potatoes, chickpeas, bananas, and fortified cereals. Most people who eat a varied diet get enough.
Can too much vitamin B6 be harmful?
Yes. Taking very high amounts for a long time can cause numbness and trouble with coordination. This is one reason doctors check levels and set the dose.
Can vitamin B6 deficiency affect my mood?
It can. Vitamin B6 helps the body make brain chemicals that affect mood and sleep. Low levels are linked with confusion, irritability, and low mood. Treating the deficiency may improve these symptoms.
Sources
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
