Chlorpheniramine, dextromethorphan, and phenylephrine is a combination medicine used to treat cough, runny or stuffy nose, sneezing, itching, and watery eyes caused by allergies, the common cold, or the flu.
Common side effects
Insomnia (difficulty in sleeping), Vomiting, Headache, Nausea, Sedation, Double vision, Diarrhea, Dryness in mouth, Nervousness, Decreased appetite, Heartburn, Dizziness, Weakness, Discomfort when urinating, Polyuria, Urinary retention, Hallucination, Convulsion