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Phenylephrine / potassium guaiacolsulfonate Side Effects
Applies to phenylephrine / potassium guaiacolsulfonate: liquid
Check with your doctor if any of these most COMMON side effects persist or become bothersome:
Seek medical attention right away if any of these SEVERE side effects occur while taking phenylephrine / potassium guaiacolsulfonate:
Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.
Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; tremor.
It is possible that some side effects of phenylephrine / potassium guaiacolsulfonate may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.
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.