A-G Tussin Side Effects

Generic Name: chlorpheniramine / hydrocodone / pseudoephedrine

Note: This page contains information about the side effects of chlorpheniramine / hydrocodone / pseudoephedrine. Some of the dosage forms included on this document may not apply to the brand name A-G Tussin.

Not all side effects for A-G Tussin may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

Applies to chlorpheniramine / hydrocodone / pseudoephedrine: oral liquid, oral syrup

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

Stop using this medication and call your doctor at once if you have a serious side effect such as:

  • severe dizziness, anxiety, restless feeling, or nervousness;

  • fast, pounding, or uneven heartbeats;

  • shallow breathing, slow heartbeat;

  • confusion, hallucinations, unusual thoughts or behavior;

  • feeling like you might pass out;

  • urinating less than usual or not at all;

  • easy bruising or bleeding, unusual weakness, fever, chills, body aches, flu symptoms;

  • dangerously high blood pressure (severe headache, blurred vision, buzzing in your ears, chest pain, shortness of breath, seizure); or

  • upper stomach pain, itching, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).

Less serious side effects of chlorpheniramine / hydrocodone / pseudoephedrine may include:

  • nausea, vomiting, upset stomach, constipation;

  • dry mouth;

  • blurred vision;

  • dizziness, drowsiness;

  • problems with memory or concentration;

  • sleep problems (insomnia);

  • ringing in your ears;

  • warmth, tingling, or redness under your skin; or

  • skin rash or itching.

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

More about A-G Tussin (chlorpheniramine / hydrocodone / pseudoephedrine)

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Professional resources

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