Until recently, generic Adderall has only been available in seven strengths of instant-release tablets (5mg, 7.5mg, 10mg, 12.5mg, 15mg, 20mg, 30mg). Adderall XR (a long-acting form of the medication) was not available in a generic form, as it was protected by a patent. The earliest date a generic Adderall XR could become available was considered to be 2018, when the patent expired.
Shire Pharmaceuticals introduced the Adderall brand in 1996. In 2006, Shire agreed to sell rights to the Adderall name for the instant-release form of Adderall to Duramed Pharmaceuticals and the medication has since become available in a generic formulation of “mixed amphetamine salts”. In 2001, Shire Pharmaceuticals introduced an extended-release preparation of a combination of dextroamphetamine and racemic DL-amphetamine salts in a variety of dosages under the brand name “Adderall XR”, on which Shire intended to retain exclusive patent rights until the patent expired in 2018. However, Shire Pharmaceuticals sold Adderall (instant release) to Barr Pharmaceuticals, too. Now Barr manufactures both the brand and a generic for Adderall, and is going start selling Adderall XR in April 2009. Also, a settlement has been reached between IMPAX Laboratories and Shire Laboratories Inc., a subsidiary of Britain’s Shire Pharmaceuticals in the United States, so IMPAX got a permission to market generic versions of Adderall XR in the United States at least until January 1, 2010…
Now, Adderall is produced by a number of manufacturers, including Duramed Pharmaceuticals, IMPAX Laboratories, Barr Pharmaceuticals, Eon Labs, Ranbaxy Pharmaceuticals, and others.
However, be careful when you find “generic Adderall XR” offers on the Web. You have to remember that the medicines being sold as “generic Adderall XR” are very often fake, substandard, and potentially dangerous. You should not buy any generic Adderall XR unless you are sure of the drug’s manufacturer and the dealer, offering generic Adderall.