Brompheniramine / Diphenhydramine Side Effects
Applies to brompheniramine / diphenhydramine: oral tablet extended release.
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.
You should not use this medication if you have severe constipation, a blockage in your stomach or intestines, or if you are unable to urinate.
Do not use this medicine if you have untreated or uncontrolled diseases such as glaucoma, asthma or COPD, heart disease, or overactive thyroid.
Get emergency medical help if you have any of these signs of an allergic reaction while taking brompheniramine / diphenhydramine: hives; difficult 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:
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fast or uneven heart rate;
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mood changes;
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tremor, seizure (convulsions);
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easy bruising or bleeding, unusual weakness;
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feeling short of breath; or
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urinating less than usual or not at all.
Less serious side effects of brompheniramine / diphenhydramine may include:
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dizziness, drowsiness;
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dry mouth, nose, or throat;
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constipation;
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blurred vision; 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 brompheniramine / diphenhydramine
- Check interactions
- Compare alternatives
- Dosage information
- Drug class: upper respiratory combinations
Related treatment guides
Further information
Brompheniramine/diphenhydramine 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.
Some side effects may not be reported. You may report them to the FDA.