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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:

Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur while taking phenylephrine / potassium guaiacolsulfonate:

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.

Further information

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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