There is currently no generic Lumigan (bimatoprost ophthalmic solution) available on the market, and it is difficult to say when a generic version will become available. For your safety, do not buy anything claiming to be a "generic" version of Lumigan until an approved generic is available.
Lumigan® (bimatoprost ophthalmic solution) is a prescription medicine approved for the treatment of high eye pressure and open angle glaucoma. It comes in the form of an eye drop and belongs to a group of medications known as prostaglandins.
Lumigan is manufactured by Allergan, Inc. It is currently under the protection of a patent that prevents any generic Lumigan from being manufactured in the United States. Yet, if you search the Internet for "generic Lumigan," you may find a number of companies selling it. The fact is, these medicines may be fake, substandard, and potentially dangerous. There may be generic Lumigan available from another country, but there is really no way of knowing if you are getting genuine Lumigan. You should not buy any generic Lumigan until there is an approved generic available.
The first patents for Lumigan expired in September 2012 and November 2012. However, no generic versions are yet available. This strongly suggests that one or more later-expiring patents are still protecting the drug from generic competition. The next Lumigan patent is set to expire in August 2014. This is the earliest predictable date that a generic version could become available.
However, there are other circumstances that could come up to extend or shorten the exclusivity period of Lumigan. This could include such things as lawsuits or other patents for new Lumigan uses. Once Lumigan goes off patent, there may be several companies that will manufacture a generic Lumigan drug.