Chlophedianol / Guaifenesin / Phenylephrine Side Effects
Medically reviewed by Drugs.com. Last updated on Nov 12, 2024.
Applies to chlophedianol / guaifenesin / phenylephrine: oral liquid.
Important warnings
This medicine can cause some serious health issues
Do not give this medication to a child younger than 4 years old. Always ask a doctor before giving a cough or cold medicine to a child. Death can occur from the misuse of cough and cold medicines in very young children.
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 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:
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fast, slow, or uneven heart rate;
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severe dizziness or anxiety, feeling like you might pass out;
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mood changes, hallucinations;
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severe headache;
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tremor, seizure (convulsions);
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fever; or
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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:
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mild dizziness or drowsiness;
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mild headache;
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diarrhea, constipation, nausea, upset stomach;
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sleep problems (insomnia); or
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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.
More about chlophedianol / guaifenesin / phenylephrine
- Check interactions
- Compare alternatives
- Dosage information
- Drug class: upper respiratory combinations
Patient resources
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Further information
Chlophedianol/guaifenesin/phenylephrine side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Note: Medication side effects may be underreported. If you are experiencing side effects that are not listed, submit a report to the FDA by following this guide.