Codeine / dexchlorpheniramine / phenylephrine Side Effects

Not all side effects for codeine / dexchlorpheniramine / phenylephrine 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 codeine / dexchlorpheniramine / phenylephrine: oral liquid

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

Stop taking this medication and call your doctor at once if you have any of these serious side effects:

  • fast or pounding heartbeat;

  • wheezing, chest tightness, trouble breathing;

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

  • confusion, hallucinations, unusual thoughts or behavior;

  • seizure (convulsions);

  • urinating less than usual or not at all;

  • easy bruising or bleeding;

  • pale or yellowed skin, dark colored urine, fever, weakness; or

  • increased blood pressure (severe headache, blurred vision, trouble concentrating, chest pain, numbness, seizure).

Less serious side effects include:

  • nausea, vomiting, loss of appetite;

  • constipation, diarrhea;

  • dizziness, drowsiness, headache;

  • loss of coordination;

  • blurred vision;

  • excitability (especially in children);

  • sleep problems (insomnia);

  • dry mouth, nose, or throat;

  • chest congestion;

  • chills, increased sweating;

  • itching or mild rash; or

  • ringing in your ears.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect.

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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