Guaifen PE Side Effects

Generic Name: guaifenesin / phenylephrine

Note: This page contains information about the side effects of guaifenesin / phenylephrine. Some of the dosage forms included on this document may not apply to the brand name Guaifen PE.

Not all side effects for Guaifen PE may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

For the Consumer

Applies to guaifenesin / phenylephrine: controlled-release tablets, liquid, solution, suspension, sustained-release capsules, sustained-release tablets (12 hour), syrup, tablets

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 guaifenesin / phenylephrine:

Severe allergic reactions (rash; hives; itching; 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.

For Healthcare Professionals

Applies to guaifenesin / phenylephrine: oral capsule, oral capsule extended release, oral drops, oral liquid, oral suspension, oral syrup, oral tablet, oral tablet extended release

Cardiovascular

Cardiovascular side effects have included tachycardia, palpitations, arrhythmias, and cardiovascular collapse with hypotension.[Ref]

Nervous system

Nervous system side effects have included central nervous system depression, tremor, headache, dizziness, restlessness, insomnia, and convulsions.[Ref]

Psychiatric

Psychiatric side effects have included fear, nervousness, anxiety, and hallucinations.[Ref]

Gastrointestinal

Gastrointestinal side effects have included nausea and vomiting.[Ref]

Respiratory

Respiratory side effects have included breathing difficulty.[Ref]

Genitourinary

Genitourinary side effects have included dysuria.[Ref]

Dermatologic

Dermatologic side effects have included pallor.[Ref]

General

General side effects have included weakness.[Ref]

References

1. "Product Information. Duratuss GP (guaifenesin-phenylephrine)." Victory Pharma, San Diego, CA.

2. "Product Information. Duratuss (guaifenesin-phenylephrine)." Victory Pharma, San Diego, CA.

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