Generic Adderall XR?

Hello.

If this question has already been asked, or is common knowledge, I apologize for the redundancy.  Currently, I take 10 MG doses of Adderall XR, three times a day (owing to a hummingbird metabolism).  My monthly prescription cost (no insurance) is now $350.99.  This is getting to be almost too expensive.

Is a generic version of this drug out?  I know that there is one available for Adderall, but I do not know if one is available for Adderall Extended Release.

Thanks!