{"id":"tetracaine-drop","safety":{"commonSideEffects":[{"rate":null,"effect":"Corneal epithelial toxicity with prolonged use"},{"rate":null,"effect":"Transient stinging or burning upon instillation"},{"rate":null,"effect":"Allergic conjunctivitis"},{"rate":null,"effect":"Corneal scarring (rare, with chronic use)"}]},"_chembl":{"chemblId":"CHEMBL1255654","moleculeType":"Small molecule","molecularWeight":"300.83"},"_dailymed":null,"mechanism":{"_ai_source":"claude-haiku-4.5","explanation":"Tetracaine reversibly binds to and blocks voltage-gated sodium channels on the inner surface of nerve cell membranes, preventing depolarization and action potential propagation. This results in local anesthesia of the cornea and surrounding ocular tissues when applied topically as an ophthalmic drop. 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