Chlorpheniramine / Phenylephrine / Phenyltoloxamine Side Effects
Applies to chlorpheniramine / phenylephrine / phenyltoloxamine: oral liquid.
Important warnings
This medicine can cause some serious health issues
Do not use this medicine if you have taken 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, and tranylcypromine.
Get emergency medical help if you have any of these signs of an allergic reaction while taking chlorpheniramine / phenylephrine / phenyltoloxamine: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using this medicine and call your doctor at once if you have:
-
fast or uneven heart rate;
-
pounding heartbeats or fluttering in your chest;
-
painful or difficult urination, little or no urinating;
-
tremors, seizure (convulsions); or
-
vision changes, severe dizziness, feeling like you might pass out.
Common side effects may include:
-
headache, dizziness, drowsiness;
-
dry mouth, nose, or throat;
-
upset stomach, loss of appetite, nausea, constipation;
-
blurred vision;
-
sleep problems (insomnia); or
-
feeling restless or excited (especially in children).
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.
See also:
Sudafed Congestion
Sudafed is a decongestant and is used to treat nasal and sinus congestion. Learn about side ...
Dupixent
Dupixent is used to treat eczema, eosinophilic or oral-corticosteroid-dependent asthma, chronic ...
Claritin-D
Claritin-D is used to treat sneezing, runny nose, itchy eyes, hives, itching, and other symptoms of ...
Oxymetazoline nasal
Oxymetazoline nasal is used for allergies, nasal congestion
Doxylamine
Doxylamine is used for allergic rhinitis, allergies, conjunctivitis, allergic, insomnia, nasal ...
Sodium chloride nasal
Sodium chloride nasal is used for nasal congestion
Pseudoephedrine
Pseudoephedrine is used to treat nasal and sinus congestion, or congestion of the tubes that drain ...
More about chlorpheniramine / phenylephrine / phenyltoloxamine
- Check interactions
- Compare alternatives
- Imprints, shape & color data
- Drug class: upper respiratory combinations
- En español
Patient resources
Other brands
Chlorex A, Nalex-A, NoHist-A, West-Decon M
Related treatment guides
Further information
Chlorpheniramine/phenylephrine/phenyltoloxamine 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.