Why is Vitamin B6 (pyridoxine) high? Causes, symptoms, and what to do

Explore why Vitamin B6 levels might be high, potential symptoms, and when to consult a doctor.

Aug 10, 2026 2 min read

Check your result

Calculated in your browser - the number is not sent anywhere.

Vitamin B6, also known as pyridoxine, is an essential nutrient that plays a crucial role in many bodily functions, including metabolism and brain health. Understanding why Vitamin B6 levels might be high can help you manage your health effectively. This article will explore the causes of elevated Vitamin B6 levels, associated symptoms, and what steps you can take.

What is Vitamin B6?

Vitamin B6 is a water-soluble vitamin that is vital for numerous processes in the body. It helps in the metabolism of proteins, fats, and carbohydrates, and is essential for the production of neurotransmitters, which are chemicals that transmit signals in the brain. Vitamin B6 is usually measured in the form of pyridoxal-5-phosphate, with normal levels ranging from approximately 20 to 120 nmol/L.

Have your own lab results? Upload your report and get a clear, private AI explanation in minutes - free, in English, Russian or Hebrew.
Analyze my results

Causes of High Vitamin B6 Levels

Excessive Vitamin B6 is often due to over-supplementation. While Vitamin B6 is essential, taking too much can lead to elevated levels in the blood. This typically occurs when individuals take high-dose supplements without medical supervision. It's important to note that dietary sources of Vitamin B6, such as poultry, fish, potatoes, and bananas, are unlikely to cause high levels on their own.

Symptoms of High Vitamin B6

High levels of Vitamin B6 can lead to nerve-related symptoms. These may include tingling or numbness in the hands and feet, difficulty walking, and in severe cases, nerve damage. Both deficiency and excess of Vitamin B6 can cause similar nerve symptoms, so it's crucial to maintain levels within the normal range of approximately 20 to 120 nmol/L.

How to Interpret Your Vitamin B6 Test Results

If your Vitamin B6 levels are above 120 nmol/L, it could indicate over-supplementation. It is important to review your supplement intake and discuss it with your healthcare provider. They may recommend adjusting your dosage or discontinuing supplements to bring your levels back to the normal range.

Frequently asked questions

What foods are high in Vitamin B6? Foods rich in Vitamin B6 include poultry, fish, potatoes, chickpeas, bananas, and fortified cereals. These foods are safe to consume in normal amounts and unlikely to cause high Vitamin B6 levels.

Can high Vitamin B6 levels be harmful? Yes, high levels of Vitamin B6 can lead to nerve damage and other symptoms such as tingling or numbness. It's important to manage your intake to avoid these effects.

How can I lower my Vitamin B6 levels? If your levels are high due to supplements, reducing or stopping the intake of Vitamin B6 supplements is usually advised. Consult your healthcare provider for personalized guidance.

When to see a doctor

If you experience symptoms like tingling, numbness, or difficulty walking, or if your Vitamin B6 levels are above 120 nmol/L, consult a healthcare provider. They can help determine the cause of elevated levels and suggest appropriate actions. Regular monitoring of Vitamin B6 levels through blood tests can also be beneficial.

Remember, this information is not intended as medical advice. Always discuss your health concerns and test results with your clinician.

Vitamin B6 (pyridoxine): more on this topic

Test page What it measures, normal range, what moves it

Conditions where this test is key

Often checked together

Read this in another language

Have your own lab results? Upload your report and get a clear, private AI explanation in minutes - free, in English, Russian or Hebrew.
Analyze my results