The combination of Phenylephrine 5mg and Chlorpheniramine 2mg is commonly used to treat symptoms of allergies, colds, and sinus congestion.

Phenylephrine (5mg) is a decongestant that works by constricting blood vessels in the nasal passages, reducing swelling and congestion, which helps relieve a stuffy nose and make it easier to breathe.

Chlorpheniramine (2mg) is an antihistamine that helps alleviate symptoms of allergic reactions, such as sneezing, runny nose, itchy or watery eyes, and throat irritation. It works by blocking histamine, a substance in the body that causes allergic symptoms. It also has mild sedative effects, which can help with sleep.

This combination is effective for managing symptoms associated with allergic rhinitis, sinus congestion, and common colds. It provides both decongestant and antihistamine effects, helping to reduce nasal congestion and allergic symptoms.