Thiamine Side Effects

Please note - some side effects for Thiamine may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA at http://www.fda.gov/medwatch/ or 1-800-FDA-1088 (1-800-332-1088).

Side Effects of Thiamine - for the Consumer

Thiamine

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Thiamine:

Feeling of warmth; fluid retention; flushing; hives; itching; nausea; restlessness; sweating; tingling; weakness.

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); bluish skin or discoloration.

Side Effects by Body System

Local

Local side effects have included tenderness and induration at the injection site following intramuscular use.

Hypersensitivity

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.

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