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Recently, I had patients come in with generic latanoprost that cost them anywhere from $4 to $80 (all made by a subsidiary of Pfizer Inc.). Generic latanoprost is also available online at drugstore.com for $20 per bottle (even less for a 90-day supply).
How to use latanoprost ophthalmic. Apply this medication in the affected eye(s) usually once daily in the evening, or as directed by your doctor. Do not use this medication more frequently than prescribed; using more can decrease effectiveness. To apply eye drops, wash your hands first.