Robitussin Cough + Chest Congestion DM Maximum Strength Side Effects
Generic name: dextromethorphan / guaifenesin
Note: This document contains side effect information about dextromethorphan / guaifenesin. Some of the dosage forms listed on this page may not apply to the brand name Robitussin Cough + Chest Congestion DM Maximum Strength.
Some side effects of Robitussin Cough + Chest Congestion DM Maximum Strength may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.
For the Consumer
Applies to dextromethorphan / guaifenesin: oral capsule, oral granule, oral liquid, oral tablet, oral tablet extended release
Get emergency medical help if you have any of these signs of an allergic reaction while taking dextromethorphan / guaifenesin: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using this medication and call your doctor at once if you have any of these serious side effects:
severe dizziness, anxiety, restless feeling, or nervousness;
confusion, hallucinations; or
slow, shallow breathing.
Less serious side effects of dextromethorphan / guaifenesin may include:
skin rash or itching; or
nausea, vomiting, or stomach upset.
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: oral capsule, oral capsule extended release, oral elixir, oral granule, oral liquid, oral suspension extended release, oral tablet, oral tablet extended release
Nervous system side effects of dextromethorphan have included drowsiness and dizziness. Adverse effects, which have occurred at higher doses, include excitation, mental confusion, and opioid like respiratory depression. In some cases of abuse, patients have experienced euphoria, hyperactivity, mania, and auditory and visual hallucinations.
Gastrointestinal side effects have included nausea, vomiting and constipation.
Dermatologic side effects have included pruritus and rash.
Hypersensitivity side effects of dextromethorphan have included fixed-drug eruptions.