Crantex Side Effects
Generic name: guaifenesin / phenylephrine
Medically reviewed by Drugs.com. Last updated on Feb 11, 2024.
Note: This document provides detailed information about Crantex Side Effects associated with guaifenesin / phenylephrine. Some dosage forms listed on this page may not apply specifically to the brand name Crantex.
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:
-
nervousness, dizziness, sleep problems (insomnia).
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 guaifenesin / phenylephrine: oral capsule, oral capsule extended release, oral drops, oral liquid, oral suspension, oral syrup, oral tablet, oral tablet extended release.
General
The manufacturer has not provided adverse event information.[Ref]
References
1. (2019) "Product Information. Gilphex TR (guaifenesin-phenylephrine)." Gil Pharmaceutical Corporation
More about Crantex (guaifenesin / phenylephrine)
- Check interactions
- Compare alternatives
- Dosage information
- During pregnancy
- Drug class: upper respiratory combinations
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Further information
Crantex 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.