What is Vitamin B6?

Vitamin B6 is a water soluble vitamin that helps support more than 100 enzyme reactions in the body. It plays an important role in protein metabolism, immune health, brain development, and the production of hemoglobin, the protein that carries oxygen in the blood.

Vitamin B6 refers to several related compounds, including pyridoxine, which is commonly found in supplements. Because the body stores only a limited amount of this water soluble vitamin, it is important to consume vitamin B6 regularly through food or, when appropriate, supplementation.

What does Vitamin B6 do?

Vitamin B6 supports several important processes throughout the body.

• Supports the immune system: Vitamin B6 helps the body produce antibodies, which the immune system uses to recognize and respond to infections.

• Helps the body process protein: Vitamin B6 helps break down dietary protein into amino acids the body can use. People who consume more protein may also need more vitamin B6.

• Supports the brain and nervous system: Vitamin B6 is involved in producing neurotransmitters, which are chemical messengers that help nerve cells communicate. This supports normal brain development, mood, and nervous system function.

• Helps maintain normal blood glucose levels: Vitamin B6 helps the body access stored glucose when it needs energy, contributing to normal blood sugar regulation.

• May help with nausea during pregnancy: Vitamin B6 may be recommended as an initial treatment for nausea and vomiting during pregnancy. If vitamin B6 alone does not provide enough relief, a healthcare professional may recommend adding doxylamine. A prescription medication containing both ingredients is also available.

People who are pregnant should speak with their obstetric care provider before starting vitamin B6, doxylamine, or another treatment.

Food Sources of Vitamin B6

Vitamin B6 is found in many plant and animal based foods. Most people who eat a varied diet can obtain enough through food.

Sources include:

• Chickpeas

• Tuna and salmon

• Poultry

• Potatoes

• Bananas

• Nuts

• Whole grains

• Fortified breakfast cereals

• Fortified breads

  
  

Check the Nutrition Facts label to determine how much vitamin B6 a fortified food contains.

Who may be at risk for Vitamin B6 deficiency?

Vitamin B6 deficiency is uncommon, but the risk may be higher among people who:

• Have kidney or liver disease

• Have a condition that affects nutrient absorption

• Consume excessive amounts of alcohol

• Take certain medications that affect vitamin B6 levels

• Have an autoimmune or inflammatory condition that affects nutrient status

Possible signs of deficiency may include anemia, confusion, irritability, depression, a weakened immune response, sores around the mouth, or numbness and tingling in the hands and feet. These symptoms can have many causes, so proper medical evaluation is important.

What is the difference between Vitamin B6 and Vitamin B12?

Vitamin B6 and vitamin B12 are both essential B vitamins that support the brain, nerves, and blood cells. They are often included together in B complex supplements, but they perform different functions and cannot replace one another.

	Vitamin B6	Vitamin B12
Also known as	Pyridoxine and related compounds	Cobalamin
Primary roles	Protein metabolism, immune function, hemoglobin production, and nervous system support	Red blood cell formation, DNA production, and nerve health
Common food sources	Chickpeas, fish, poultry, potatoes, bananas, and fortified cereals	Fish, meat, poultry, eggs, dairy products, and fortified foods
People at greater risk of deficiency	People with certain kidney, liver, absorption, or inflammatory conditions	Vegans, some vegetarians, older adults, and people with conditions that interfere with B12 absorption
Possible deficiency symptoms	Anemia, skin changes, irritability, weakened immunity, numbness, or tingling	Fatigue, megaloblastic anemia, memory changes, numbness, or nerve damage
Risk from excessive supplements	High supplemental doses can cause nerve damage	Vitamin B12 generally has a low risk of toxicity

Vitamin B6 and vitamin B12 both help the body manage homocysteine, but they are not interchangeable. A healthcare professional can help determine whether testing is appropriate if a deficiency is suspected.

Other frequently asked questions about Vitamin B6

Can you take too much vitamin B6?

Yes. Although vitamin B6 is water soluble, taking excessive amounts from supplements can cause serious nerve damage. Symptoms may include numbness, tingling, burning sensations, difficulty walking, or loss of coordination.

This risk is primarily associated with supplemental vitamin B6 rather than the amounts naturally present in food. Avoid taking more than the recommended amount unless you are under medical supervision

Does Vitamin B6 interact with medications?

Vitamin B6 supplements may interact with certain medications. Some medicines can also reduce vitamin B6 levels.

Potential interactions may involve:

• Certain medications used to treat seizures

• Cycloserine, an antibiotic used to treat tuberculosis

• Theophylline, which may be used for asthma and other lung conditions

• Levodopa when it is taken without carbidopa

Tell your physician and pharmacist about every medication and supplement you take before starting vitamin B6.

Is vitamin B6 the same as a B complex supplement?

No. A B complex supplement typically contains all eight essential B vitamins:

• Vitamin B1, or thiamin

• Vitamin B2, or riboflavin

• Vitamin B3, or niacin

• Vitamin B5, or pantothenic acid

• Vitamin B6

• Vitamin B7, or biotin

• Vitamin B9, or folate

• Vitamin B12

A standalone vitamin B6 supplement contains vitamin B6 without all the other B vitamins. Always review the Supplement Facts label because ingredients and amounts can vary among products.

Conclusion

Vitamin B6 supports metabolism, immune health, hemoglobin production, and normal brain and nervous system function. Most people can meet their needs through a balanced and varied diet, but supplementation may be appropriate in certain situations.

Finding a supplement that meets your dietary preferences, allergy concerns, or other ingredient needs can be challenging. Pill Clarity helps make medication and supplement ingredients easier to understand. Members can receive personalized support from pharmacists when searching for suitable products, including animal free and vegan options.

Co-authored by: Mia Syvirathphan

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Disclaimer: The product and/or information provided on Pill Clarity is of a general nature and is not intended to be a substitute for professional medical advice, diagnosis, or treatment. We do not lab test the products to confirm that they are free from animal ingredients, and it is possible that the formulation and ingredients could have changed. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition or product. The information provided in this post is accurate and up to date as of the date it was written. However, please note that circumstances and facts may change over time, and new information may become available that could alter the accuracy or relevance of the content. We encourage readers to verify and cross-reference any information provided here with trusted sources or consult relevant professionals for the most current and accurate updates.

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