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Alacol DM Side Effects

Generic name: brompheniramine / dextromethorphan / phenylephrine

Note: This document contains side effect information about brompheniramine / dextromethorphan / phenylephrine. Some dosage forms listed on this page may not apply to the brand name Alacol DM.

Applies to brompheniramine / dextromethorphan / phenylephrine: oral liquid.


Do not use this medicine if you have taken an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, and tranylcypromine.

Get emergency medical help if you have any of these signs of an allergic reaction while taking brompheniramine/dextromethorphan/phenylephrine: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using this medicine and call your doctor at once if you have:

Common side effects may include:

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 brompheniramine/dextromethorphan/phenylephrine: oral liquid, oral suspension extended release.


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

More about Alacol DM (brompheniramine / dextromethorphan / phenylephrine)

Patient resources

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Rynex DM, Dimaphen DM, Lohist-DM, Tussi-Pres B, ... +2 more

Professional resources

Related treatment guides


1. (2022) "Product Information. Dimaphen (brompheniramine-pseudoephedrine)." Major Pharmaceuticals Inc

Further information

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.