TRANSPARENT EYE DROPS CONTAINING LATANOPROST

摘要

It is intended to provide an improved formulation of latanoprost eye drops. Namely, transparent eye drops containing latanoprost as the active ingredient and benzalkonium chloride as a preservative wherein clouding due to a composition change is prevented by using at least one means selected from the following means 1) to 3). 1) A means of adding a surfactant; 2) a means of using benzalkonium chloride represented by the formula [C6H5CH2N(CH3)2R]Cl (wherein R represents C12 alkyl)as the benzalkonium chloride; and 3) a means of adding a nonionic isotonic agent as an isotonic agent.