Tanafed DMX Side Effects

Generic name: dexchlorpheniramine / dextromethorphan / pseudoephedrine

Medically reviewed by Drugs.com. Last updated on Jan 6, 2022.

Note: This document contains side effect information about dexchlorpheniramine / dextromethorphan / pseudoephedrine. Some dosage forms listed on this page may not apply to the brand name Tanafed DMX.

Applies to dexchlorpheniramine / dextromethorphan / pseudoephedrine: oral liquid.

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

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

• fast, slow, or uneven heart rate;

• severe headache, mood changes, hallucinations;

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

• tremor, seizure (convulsions);

• easy bruising or bleeding, unusual weakness;

• fever;

• little or no urinating;

• shortness of breath; or

• dangerously high blood pressure (severe headache, blurred vision, buzzing in your ears, anxiety, confusion, chest pain, uneven heartbeats, seizure).

Common side effects may include:

• mild headache;

• mild dizziness, drowsiness;

• dry mouth, nose, or throat;

• nausea, diarrhea, constipation, upset stomach;

• feeling nervous, restless, or irritable;

• blurred vision; or

• sleep problems (insomnia).

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

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.

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