There is currently no generic Lunesta available. It is important to keep in mind that while many companies claim to sell generic Lunesta products, these drugs are potentially dangerous and should be avoided until an approved version becomes available.
Lunesta® (eszopiclone) is a prescription medication that has been licensed as a sleep medication to treat insomnia. The drug is manufactured by Sepracor, Inc. It is currently under the protection of a patent that prevents any generic versions from being manufactured in the United States. Yet, if you search the Internet for "generic Lunesta," you may find a number of companies selling it.
The fact is that these medicines are fake, substandard, and potentially dangerous. Generic Lunesta may be available from another country, but there is really no way of knowing if you are getting genuine Lunesta or not. You should not buy any so-called generic versions until an approved version is available.
The first patents for this medicine have already expired. However, the drug is not yet available in generic form. Most likely, this means that one or more other, later-expiring patents are still protecting the medication from generic competition. The next Lunesta patent is set to expire in August 2014. This is the earliest possible date that a generic version could become available.
However, certain circumstances could extend the exclusivity period beyond 2014, such as other patents for specific Lunesta uses or lawsuits. Once the drug goes off-patent, several companies will likely manufacture a generic version.
No -- eszopiclone is the active ingredient in Lunesta, but is not a generic version of it. Oftentimes, the active ingredient of a drug is referred to as the "generic name." The generic name is different from a generic version of a medicine, however.
In order for there to be a generic version of a medicine, the original medicine must have gone off-patent, and then another company besides the original manufacturer must make the product.