withdrawal from dexedrine | ADHD Information

What if any symptoms have people had, if forced to abruptly stop the use of dexedrine?  The company that makes this med recently sold it to another company.  The new company has not gotten a license to ship it to the area I live in.  We have tried to get it from the insurance company, but there has been one snag after another.  I am out of meds and very worried!