Dextromethorphan/guaifenesin/phenylephrine (By mouth)
Health Guide
Drug Guide

Dextromethorphan/guaifenesin/phenylephrine (By mouth)

Dextromethorphan (dex-troe-meth-OR-fan), Guaifenesin (gwye-FEN-e-sin), Phenylephrine (fen-il-EF-rin)

Relieves nasal congestion and cough due to respiratory tract infection.

Brand Name(s):

Actidom DMX, Ambi 10PEH/400GFN/20DM, Broncotron PED, Broncotron PED drops, Children's Mucinex Multi-Symptom Cold, Children's Robitussin Cough & Cold CF, Deconex DMX, Desgen DM, Desgen Pediatric Drops, Despec DM, Despec DM-G, Despec EDA, Exactuss, G-Supress DX, G-TRON PED

There may be other brand names for this medicine.

When This Medicine Should Not Be Used:

You should not use this medicine if you have had an allergic reaction to guaifenesin, phenylephrine, or dextromethorphan. You should not use this medicine if you have high blood pressure or heart disease. You should not use this medicine if you are using MAO inhibitors such as Eldepryl®, Marplan®, Nardil®, or Parnate®. Do not give any over-the-counter (OTC) cough and cold medicine to a baby or child under 4 years old. Using these medicines in very young children might cause serious or possibly life-threatening side effects.

How to Use This Medicine:

Capsule, Tablet, Long Acting Tablet, Liquid

If a dose is missed:

How to Store and Dispose of This Medicine:

Drugs and Foods to Avoid:

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

Warnings While Using This Medicine:

Possible Side Effects While Using This Medicine:

Call your doctor right away if you notice any of these side effects:

If you notice these less serious side effects, talk with your doctor:

If you notice other side effects that you think are caused by this medicine, tell your doctor

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088

Last Updated: 12/12/2016

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