ExeFen-DM Side Effects

Generic name: dextromethorphan / guaifenesin

Medically reviewed by Drugs.com. Last updated on Feb 2, 2024.

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

Applies to dextromethorphan / guaifenesin: oral capsule, oral granule, oral liquid, oral tablet, oral tablet effervescent, oral tablet extended release.

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:

• mood changes;

• severe headache; or

• severe dizziness or anxiety, feeling like you might pass out.

Common side effects may include:

• dizziness, drowsiness;

• sleep problems (insomnia);

• diarrhea; or

• feeling nervous, restless, anxious, or irritable.

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 effervescent, oral tablet extended release.

General adverse events

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

See also:

Further information

ExeFen-DM 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.

Note: Medication side effects may be underreported. If you are experiencing side effects that are not listed, submit a report to the FDA by following this guide.

Medical Disclaimer