It is also known by the brand name of Xalatan manufactured by Pfizer. Annual sales are approximately $1.6 billion. The patent for latanoprost expired in March 2011, and at least one generic version (manufactured by Mylan Inc.) is now widely available in the U.S. The Veterans Health Administration, part of the U.S. Department of Veterans Affairs, uses generic Latanoprost manufactured by Alcon Laboratories of Fort Worth, Texas distributed by Novartis generic brand Sandoz Pharmaceuticals.
Latanoprost was invented by Johan W. Stjernschantz and Bahram Resul, employees of the Pharmacia Corporation of Upsalla, Sweden. 
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