Codistar-DX is a prescription cough syrup used to treat dry, irritating cough. It is a combination medicine typically containing:

• Dextromethorphan Hydrobromide – a cough suppressant

• Chlorpheniramine Maleate – an antihistamine that reduces allergy symptoms like runny nose and sneezing

• Phenylephrine – a nasal decongestant that relieves blocked nose