Burning tongue vitamin deficiency
A burning tongue can occur with iron, vitamin B12, or folate deficiency, but irritation, dry mouth, medicines, and other causes are also possible.
The short answer
A burning tongue can be associated with iron, vitamin B12, or folate deficiency, but the symptom has several possible causes and needs an examination before treatment.
Which irritants should be avoided while the tongue is sore?
Avoid tobacco, alcohol-based mouthwash, and irritating foods while sore.
Why should supplements wait until testing and advice?
Do not take high-dose supplements without discussing testing and dosing.
When does burning tongue need dental or medical care?
Seek care for an ulcer, lump, swelling, swallowing difficulty, or persistent symptoms.
Which tests and oral causes should be discussed?
Ask which blood tests and local oral causes should be assessed.
Frequently asked questions
What is the main thing to know?
A burning tongue can be associated with iron, vitamin B12, or folate deficiency, but the symptom has several possible causes and needs an examination before treatment.
When should I arrange an examination?
Seek care for an ulcer, lump, swelling, swallowing difficulty, or persistent symptoms.
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Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.