Entre-B Side Effects
Generic name: brompheniramine / phenylephrine
Medically reviewed by Drugs.com. Last updated on May 21, 2022.
Note: This document contains side effect information about brompheniramine / phenylephrine. Some dosage forms listed on this page may not apply to the brand name Entre-B.
Applies to brompheniramine / phenylephrine: oral liquid, oral tablet.
Follow all directions on the label and package. Use exactly as directed.
Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using this medicine and call your doctor at once if you have:
chest pain, fast or uneven heart rate;
little or no urinating;
dangerously high blood pressure (severe headache, buzzing in your ears, anxiety, shortness of breath);
if your symptoms do not improve after 7 days of treatment, or if you have a fever; or
if new symptoms occur.
Less serious side effects may be more likely, and you may have none at all.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.
For Healthcare Professionals
Applies to brompheniramine/phenylephrine: oral capsule extended release, oral elixir, oral liquid, oral suspension extended release, oral tablet, oral tablet chewable, oral tablet chewable extended release, oral tablet extended release.
The manufacturer has not provided adverse event information.[Ref]
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1. "Product Information. Ru-Hist D (brompheniramine-phenylephrine)." Allegis Pharmaceuticals (2019):
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.