Thiamine Side Effects
For the Consumer
Applies to thiamine: capsule, solution, tablet, tablet enteric coated
Along with its needed effects, thiamine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur while taking thiamine:Rare - Soon after receiving injection only
- difficulty in swallowing
- itching of skin
- swelling of face, lips, or eyelids
- wheezing or difficulty in breathing
For Healthcare Professionals
Applies to thiamine: compounding powder, injectable solution, oral tablet
Local side effects have included tenderness and induration at the injection site following intramuscular use.[Ref]
Hypersensitivity side effects have included a feeling of warmth, pruritus, urticaria, weakness, sweating, nausea, restlessness, tightness of the throat, angioneurotic edema, cyanosis, pulmonary edema, and hemorrhage into the gastrointestinal tract. Anaphylaxis has been reported, especially after repeated injection. Collapse and death have also been reported.[Ref]
1. "Product Information. Vitamin B1 (thiamine)." Dixon-Shane Inc, Philadelphia, PA.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Some side effects may not be reported. You may report them to the FDA.
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- Drug class: vitamins
- Thiamine (Vitamin B1) Capsules and Tablets
- Thiamine (Vitamin B1) Injection
- Thiamine Oral, Injection (Advanced Reading)
Other brands: Vitamin B1
- Thiamine Hydrochloride (AHFS Monograph)
- Thiamine Hydrochloride Injection (FDA)
- Thiamine (Wolters Kluwer)