Reported methylphenidate abuse side effects include psychosis (abnormal thinking or hallucinations), difficulty sleeping, mood swings, mood changes, stomach aches, diarrhea, headaches, lack of hunger (leading to weight loss) and dry mouth
Yes, but Tom Cruise is wrong... I know the silly man keeps altering wikipedia.org ... *sigh* :p
Seriously though, it obviously says 'abuse', not 'use'. That is, in normal quantities Ritalin won't have these effects and the side effects mentioned are those that a lot of drugs can have when you're talking about 'abuse'.
