Chlophedianol / guaifenesin / phenylephrine Side Effects

Not all side effects for chlophedianol / guaifenesin / 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 chlophedianol / guaifenesin / phenylephrine: oral liquid

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

Stop using chlophedianol, guaifenesin, and phenylephrine and call your doctor at once if you have a serious side effect such as:

  • fast, slow, or uneven heart rate;

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

  • mood changes, hallucinations;

  • severe headache;

  • tremor, seizure (convulsions);

  • fever; or

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

Less serious side effects of chlophedianol / guaifenesin / phenylephrine may include:

  • mild dizziness or drowsiness;

  • mild headache;

  • diarrhea, constipation, nausea, upset stomach;

  • sleep problems (insomnia); or

  • feeling nervous or restless.

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

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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