Olag Eye Drop contains Olopatadine 0.1% w/v, a selective histamine H1 receptor antagonist with potent anti-allergic properties. It is indicated for the relief of symptoms associated with allergic conjunctivitis, including itching, redness, and watery eyes. Olopatadine acts by inhibiting the release of histamine and other inflammatory mediators from mast cells, thereby reducing the allergic response in ocular tissues. This formulation provides rapid onset of action and sustained relief, making it suitable for both acute and chronic allergic eye conditions. Olag Eye Drop is administered topically, typically one drop in the affected eye(s) twice daily or as directed by a healthcare professional. It is generally well tolerated, with minimal adverse effects; however, some patients may experience transient burning or stinging upon instillation. Caution is advised in patients with hypersensitivity to olopatadine or any component of the formulation. Use during pregnancy and lactation should be under medical supervision. Olag Eye Drop should not be used in cases of bacterial, viral, or fungal ocular infections unless prescribed alongside appropriate antimicrobial therapy. Proper hygiene and avoidance of contact lens use during treatment are recommended to prevent contamination and enhance therapeutic efficacy.