"i was recently prescribed generic form of ritalin for aspergers/lack of focus issues. i am in my low 40s and used meth recreationally for years, although i gave that up thankfully, a while back.  this is the third pill i have taken and i assure you, the effects of this drug mimic, in many ways, taking a moderate amount of meth, although not as strong. however, i realize that it affects different people, different ways based on their chemistry. i am not sure i will take it all the time but it does give me energy and new focus, i was lacking. i can see how this drug could be addictive to some people. but it is extremely expensive."