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Mucinex Fast-Max Day Time Severe Congestion & Cough Side Effects

Generic name: dextromethorphan / guaifenesin / phenylephrine

Medically reviewed by Drugs.com. Last updated on Jan 15, 2024.

Note: This document contains side effect information about dextromethorphan / guaifenesin / phenylephrine. Some dosage forms listed on this page may not apply to the brand name Mucinex Fast-Max Day Time Severe Congestion & Cough.

Applies to dextromethorphan / guaifenesin / phenylephrine: oral liquid, oral syrup, oral tablet.

Warning

Do not use this medicine if you are using or if you have used an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, and tranylcypromine.

Get emergency medical help if you have signs of an allergic reaction: hives, difficult breathing, swelling of your face, lips, tongue, or throat.

Stop using this medicine and call your doctor at once if you have:

Common side effects may include:

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

For Healthcare Professionals

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

General

The manufacturer has not provided adverse event information.[Ref]

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References

1. Product Information. Presgen B (brompheniramine/dextromethorph/phenylephrine). KramerNovis. 2019.

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.