Medications and Drugs

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Brand Names:

Generic Name: thiamine (vitamin B1) (Pronunciation: THIGH a min)

• What is thiamine ()?
• What are the possible side effects of thiamine ()?
• What is the most important information I should know about thiamine ()?
• What should I discuss with my healthcare provider before taking thiamine ()?
• How should I take thiamine ()?
• What happens if I miss a dose ()?
• What happens if I overdose ()?
• What should I avoid while taking thiamine ()?
• What other drugs will affect thiamine ()?
• Where can I get more information?

What is thiamine ()?

Thiamine is vitamin B1. Vitamins are naturally occurring substances necessary for many processes in the body. Thiamine is important in the breakdown of carbohydrates (sugars) in the foods we eat into products needed by the body.

Thiamine is used to prevent and to treat deficiencies of thiamine.

Thiamine may also be used for purposes other than those listed in this medication guide.

What are the possible side effects of thiamine ()?

Stop taking thiamine and seek emergency medical attention if you experience an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives).

Other side effects may also occur. Talk to your doctor if you experience

• a feeling of warmth;
• itching or hives;
• weakness;
• sweating;
• nausea; and
• restlessness.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about thiamine ()?

Do not take more thiamine than is prescribed for you or than is directed on the package.