Diphenmax D Side Effects
Generic name: diphenhydramine / phenylephrine
Note: This document contains side effect information about diphenhydramine / phenylephrine. Some of the dosage forms listed on this page may not apply to the brand name Diphenmax D.
For the Consumer
Applies to diphenhydramine / phenylephrine: oral liquid, oral suspension extended release, oral tablet chewable extended release
Do not use this medicine to make a child sleepy. Ask a doctor before giving the medicine to a child younger than 6 years old.
Ask a doctor or pharmacist before using any other medicine that may contain diphenhydramine. Taking too much of this medicine can lead to a fatal overdose.
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:
painful or difficult urination;
fast, pounding, or uneven heartbeats;
a seizure; or
problems with balance or speech.
Common side effects may include:
dry mouth, nose, or throat;
blurred vision; or
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 diphenhydramine/phenylephrine: oral disintegrating strip, oral liquid, oral suspension extended release, oral tablet chewable extended release
The manufacturer has not provided adverse event information.[Ref]
More about Diphenmax D (diphenhydramine / phenylephrine)
- Other brands
- Children's Triacting Night Time, Dimetapp Children's Nighttime Cold & Congestion, Dytan-D, Triaminic Night Time Cold & Cough
Related treatment guides
1. "Product Information. Dimetapp Nighttime Cold & Congestion (diphenhydramine-phenylephrine)." Novartis Consumer Health, Parsippany, NJ.
Some side effects may not be reported. You may report them to the FDA.