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Thiamine Overview

Reviewed: October 15, 2013
Updated: October 30, 2013

Thiamine is a prescription medication used to treat thiamine deficiency or beri beri. Thiamine belongs to a group of drugs called vitamins, which help to restore levels of this vitamin in the body.

This medication is available in an injectable form to be given directly into a vein (IV) or muscle (IM) by a healthcare professional.

Common side effects of thiamine include redness, itchiness, and sensitivity to the sight of injection.

Side Effects of Thiamine

Serious side effects have been reported with thiamine. See the “Drug Precautions” section.

Common side effects of thiamine include the following:

  • sensitivity, redness, warmth, and itching at site of injection
  • nausea
  • restlessness

This is not a complete list of thiamine side effects. Ask your doctor or pharmacist for more information.

Tell your doctor if you have any side effect that bothers you or that does not go away.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

Reviewed:  October 15, 2013
Updated:  October 30, 2013

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