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J-Max Side Effects

Generic name: guaifenesin / phenylephrine

Medically reviewed by Drugs.com. Last updated on Feb 11, 2024.

Note: This document provides detailed information about J-Max Side Effects associated with guaifenesin / phenylephrine. Some dosage forms listed on this page may not apply specifically to the brand name J-Max.

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

Important warnings This medicine can cause some serious health issues

Do not use guaifenesin and phenylephrine 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.

Taking more than your recommended dose will not make this medicine more effective, and may cause serious side effects.

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 guaifenesin and phenylephrine and call your doctor at once if you have:

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

Managing side effects (general information)

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.

General adverse events

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

References

1. (2019) "Product Information. Gilphex TR (guaifenesin-phenylephrine)." Gil Pharmaceutical Corporation

Further information

J-Max side effects can vary depending on the individual. 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.

Medical Disclaimer