Is there a GENERIC stimulant medication available that has an extended duration?!

Is there a GENERIC stimulant medication available that has an extended duration?

Hi. Right now I'm taking 2, 10 mg pills of immediate release adderall daily for extreme fatigue and inattention issues. I notice that the valleys on this med seem to be rough. When it starts wearing off I just want to curl up and go to sleep, and this happens quickly-like within four hours of ingestion. I know there is XR adderall but my insurance only covers generic meds so I can't afford it. Does anyone know if there is a similar GENERIC drug that has a extended release that would last at least twelve hours or so, so I wouldn't have to face that hard mid day slump. I also noticed that the first two hours or so after taking the med, I am edgy and anxious, and I get sweaty really easily. I'm thinking and hoping that an XR med would smooth out these side effects as well. Is this likely? Thanks for any suggestions...

I would speak to your doctor they may have this medicine on hand for those kind of cases that the drug company might have left them with the medicine.Also some drug companies when they know one can't afford that medicine will work with that person and send it to them directly.
Speak with your doctor.
Good luck.
Laura