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)

Consumer resources

Professional resources

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Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. Drugs.com does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.

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