I only recommend you switch to d-amp if your having negative side effects from the other amphetamine mixtures in adderall, l-amp is the cause of anxiety, crash, irritability, ..Talk to your doctor...some doctors oddly view Dexedrine as more addictive and stupidely not realizing adderall is 75% Dexedrine.My shrinks defense was Dexedrine is a purer form and easier to abuse, as I brought its in adderall and the other salts cause my anxiety, she said I dam switch finally if I wanted to, but haven't as I'm too inpatient to order it at a pharmacy as it's an oddball drug, vyvanse also I recommend, it breaks down into dextro-amp once it gets metabolized. However my insurance won't cover it so...but expect POSSIBLY feel disappointed switching to dextro amp ....when I first switched the effects were so subtle I didn't get that energy clean the whole house feeling...or the tingles...just it the focus without OCD tendency and negative side effects...but for the seasoned speed user...Dexedrine is the RX of choice