药物信息为Livostin (Novartis Ophthalmics): DESCRIPTION

LIVOSTIN™ 0.05% (levocabastine hydrochloride ophthalmic suspension) is a selective histamine H₁-receptor antagonist for topical ophthalmic use. Each mL contains 0.54 mg levocabastine hydrochloride equivalent to 0.5 mg levocabastine; 0.15 mg benzalkonium chloride; propylene glycol; polysorbate 80; dibasic sodium phosphate, anhydrous; monobasic sodium phosphate, monohydrate; disodium edetate; hydroxypropyl methylcellulose; and purified water. It has a pH of 6.0 to 8.0.

The chemical name for levocabastine hydrochloride is (–)-trans-1-[cis-4-Cyano-4- (p-fluorophenyl) cyclohexyl]-3-methyl-4-phenylisonipecotic acid monohydrochloride, and is represented by the following chemical structure:

	● HCl