Chlorpheniramine is an antihistamine. Dextromethorphan is a cough suppressant. Phenylephrine is a decongestant.
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.
