Olpadin DS is a prescription-strength ophthalmic solution containing Olopatadine Hydrochloride 0.2%, designed to provide long-lasting relief from symptoms of allergic conjunctivitis such as itchy, red, or watery eyes. With its dual-action formula—both a selective histamine H1-receptor antagonist and mast cell stabilizer—Olpadin DS begins working quickly to relieve discomfort and protect the eyes from future allergic reactions.