Although the patent for Seroquel XR (quetiapine XR) is not set to expire until May 2017, a generic version may come to market sooner than that, due to the result of a legal settlement. Until a generic becomes available, keep in mind that while some companies may claim to sell a generic Seroquel XR, these drugs may be fake, substandard, and potentially dangerous.
Seroquel XR is manufactured by AstraZeneca Pharmaceuticals and is currently protected by a patent that prevents any generic Seroquel XR from being manufactured in the United States. However, if you search the Internet for "generic Seroquel XR," you may find a number of companies selling it. The fact is that these medicines may be fake, substandard, and potentially dangerous. You should not buy any generic Seroquel XR until there is an approved generic available.
When Will There Be a Generic Seroquel XR?
The patent for Seroquel XR currently expires in May 2017. Under normal circumstances, this would be the earliest possible date that a generic version of Seroquel XR could become available. However, a settlement between the manufacturer of Seroquel XR (AstraZeneca Pharmaceuticals) and a generic manufacturer (Par Pharmaceutical, Co.) will allow a generic version to become available slightly earlier in November 2016.
Keep in mind, though, that other circumstances could come up to extend or shorten the exclusivity period. These could include things such as lawsuits or other patents for specific Seroquel XR uses. Once Seroquel XR goes off patent, there may be several companies that manufacture a generic Seroquel XR drug.
Written by/reviewed by: Kristi Monson, PharmD;Arthur Schoenstadt, MD
Last reviewed by: KristiMonson, PharmD;
List of references (click here):
Seroquel XR [package insert]. Wilmington, DE: AstraZeneca Pharmaceuticals LP;2011 June.
Drug Store News. Par acquires rights to generic version of Seroquel XR (10/29/2012). DSN Web site. Available at: http://drugstorenews.com/article/par-acquires-rights-generic-version-seroquel-xr. Accessed November 16, 2012.
Food and Drug Administration, Center for Drug Evaluation and Research. Electronic orange book: Approved drug products with therapeutic equivalence evaluations. FDA Web site. Available at: http://www.fda.gov/cder/ob/. Accessed July 11, 2007.
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