Alcon Naphcon-A is a dual-action OTC ophthalmic solution combining naphazoline hydrochloride (decongestant) and pheniramine maleate (antihistamine) to address allergic conjunctivitis symptoms. Naphazoline rapidly reduces ocular vasodilation and redness through selective vasoconstriction, while pheniramine antagonizes histamine-mediated itching and lacrimation. This synergistic formulation provides prompt relief from seasonal allergies, environmental irritants, pollen, and pet dander-induced eye discomfort. The 15 mL bottle delivers convenient topical administration for acute symptom management. Suitable for patients experiencing allergic ocular inflammation seeking rapid, evidence-based therapeutic intervention without systemic absorption.