Little Colds Decongestant / Cough Side Effects
Generic Name: dextromethorphan / phenylephrine
Note: This document contains side effect information about dextromethorphan / phenylephrine. Some of the dosage forms listed on this page may not apply to the brand name Little Colds Decongestant / Cough.
Some side effects of Little Colds Decongestant / Cough may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.
For the Consumer
Applies to dextromethorphan / phenylephrine: drops
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 dextromethorphan / phenylephrine:
Dizziness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; tremor.
For Healthcare Professionals
Applies to dextromethorphan / phenylephrine: oral disintegrating strip, oral liquid
Cardiovascular side effects of phenylephrine have included palpitations, arrhythmias, and cardiovascular collapse with hypotension.
Gastrointestinal side effects of dextromethorphan have included stomach upset. Gastrointestinal side effects of phenylephrine have included nausea.
Nervous system side effects of dextromethorphan have included drowsiness and dizziness. Other side effects such as excitation, mental confusion, and opioid like respiratory depression have been rare and occurred at higher dosages. In some cases of abuse, patients experienced euphoria, hyperactivity, mania, and auditory and visual hallucinations.
Nervous system side effects of phenylephrine have included headache, dizziness, nervousness, restlessness, tremor, insomnia, convulsions, and central nervous system depression.
Hypersensitivity side effects of dextromethorphan have included rare reports of fixed-drug eruptions.
General side effects of phenylephrine have included pallor and weakness.
Genitourinary side effects of phenylephrine have included dysuria.
Psychiatric side effects of phenylephrine have included hallucinations, fear, and anxiety.
Respiratory side effects of phenylephrine have included respiratory difficulty.
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