I just started taking this today and it made me feel very strange..I didn't like the feeling much. I felt dizzy, my chest was hurting real bad and I felt irritated but couldnt stop moving. I read everywhere that you should never take with adderall. I DID however take 5 mgs of adderall this morning and then the L Tyrosine this evening (500 mg's) only one tablet. Maybe I shall try it again tom but only take half