Chlorpheniramine / dextromethorphan / phenylephrine Side Effects
Not all side effects for chlorpheniramine / dextromethorphan / phenylephrine may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.
For the Consumer
Applies to chlorpheniramine / dextromethorphan / phenylephrine: sustained-release tablets
Check with your doctor if any of these most COMMON side effects persist or become bothersome:
Seek medical attention right away if any of these SEVERE side effects occur while taking chlorpheniramine / dextromethorphan / phenylephrine:
Constipation; diarrhea; dizziness; drowsiness; excitability; headache; loss of appetite; nausea; nervousness or anxiety; upset stomach; vomiting; weakness.
Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating or inability to urinate; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; tremor; trouble sleeping; vision changes.
For Healthcare Professionals
Applies to chlorpheniramine / dextromethorphan / phenylephrine: oral drops, oral liquid, oral syrup, oral tablet effervescent, oral tablet extended release
Gastrointestinal side effects have included vomiting, diarrhea, dry mouth, nausea, anorexia, heartburn, and GI disturbance.[Ref]
Nervous system side effects have included sedation, drowsiness, dizziness, nervousness, headache, convulsions, central nervous system stimulation, hallucinations, tremors, and insomnia.[Ref]
Cardiovascular side effects have included cardiac arrhythmias, increased heart rate, and increased blood pressure.[Ref]
General side effects have included weakness and pallor.[Ref]
Genitourinary side effects have included polyuria and dysuria. Urinary retention may occur in patients with prostatic hypertrophy.[Ref]
Respiratory side effects have included respiratory difficulties.[Ref]
Ocular side effects have included diplopia.[Ref]
1. "Product Information. Rondec-DM (chlorpheniramine/DM/phenylephrine)." Alliant Pharmaceuticals Inc, Alpharetta, GA.
More about chlorpheniramine/dextromethorphan/phenylephrine
- Chlorpheniramine/dextromethorphan/phenylephrine chewable tablets
- Chlorpheniramine/dextromethorphan/phenylephrine drops
- Chlorpheniramine/dextromethorphan/phenylephrine liquid
- Chlorpheniramine/dextromethorphan/phenylephrine suspension
- More (3) »
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.