Allanhist PDX Syrup Side Effects
Generic Name: brompheniramine / dextromethorphan / guaifenesin / phenylephrine
Note: This document contains side effect information about brompheniramine / dextromethorphan / guaifenesin / phenylephrine. Some of the dosage forms listed on this page may not apply to the brand name Allanhist PDX Syrup.
Applies to brompheniramine / dextromethorphan / guaifenesin / phenylephrine: oral liquid
Get emergency medical help if you have any of these signs of an allergic reaction while taking brompheniramine / dextromethorphan / guaifenesin / phenylephrine: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using this medicine and call your doctor at once if you have:
confusion, severe anxiety, hallucinations, tremors;
weak or shallow breathing;
a light-headed feeling, like you might pass out;
fast or pounding heartbeats;
painful or difficult urination, little or no urinating;
pale skin, weakness, easy bruising or bleeding, fever, chills, body aches; or
increased blood pressure--severe headache, buzzing in your ears, chest pain, shortness of breath, uneven heartbeats.
Common side effects may include:
dizziness, drowsiness, headache;
constipation, upset stomach, loss of appetite;
blurred vision, double vision, dry eyes;
sleep problems (insomnia); or
dry mouth, nose, or throat.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.
Some side effects of Allanhist PDX Syrup may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.
More about Allanhist PDX Syrup (brompheniramine / dextromethorphan / guaifenesin / phenylephrine)
- Side Effects
- Dosage Information
- Drug Interactions
- Support Group
- En Español
- 0 Reviews – Add your own review/rating
- Drug class: upper respiratory combinations
Related treatment guides
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.