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Carbetapentane / chlorpheniramine Side Effects

Applies to carbetapentane / chlorpheniramine: oral suspension, oral tablet


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

Get emergency medical help if you have any of these signs of an allergic reaction while taking carbetapentane / chlorpheniramine: 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, pounding, or uneven heartbeat;

  • severe headache, hallucinations, seizure (convulsions);

  • severe dizziness or drowsiness;

  • vision problems;

  • little or no urinating;

  • tremors, severe restlessness; or

  • seizures (convulsions).

Common side effects may include:

  • constipation, diarrhea;

  • nausea, vomiting, upset stomach, loss of appetite;

  • weakness, mild dizziness or drowsiness;

  • anxiety, feeling nervous or excited; 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.

More about carbetapentane / chlorpheniramine

Patient resources

Other brands

C-Tanna 12, Tannic-12 S

Related treatment guides

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.