I feel as my adderall extended release is no longer working because it's not helping me concentrate? what else medications i can use to inform my dr.

A Loaded Question: The only way we know of to improve concentration is discipline and training. Long term use of amphetamines and most psycho-active drugs cause the opposite. At first you feel patient and time passes easily. You stay focused longer but are processing data at half the speed. After a few years if you take away the drug you'll be anxious, irritable, and completely unable to concentrate. Try coffee.