Guaifenesin / potassium guaiacolsulfonate Side Effects
Applies to guaifenesin/potassium guaiacolsulfonate: oral tablet extended release
Gastrointestinal
Gastrointestinal side effects have included nausea, vomiting, and stomach discomfort.[Ref]
Nervous system
Nervous system side effects have included dizziness and headache.[Ref]
Dermatologic
Dermatologic side effects have included skin rash and urticaria.[Ref]
References
1. "Product Information. Humibid L.A. (guaifenesin-potassium guaiacolsulfonate)." Carolina Pharmaceuticals Inc, Cary, NC.
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Some side effects may not be reported. You may report them to the FDA.