I was on Ritalin, 10mg, twice a day, morning & lunch time, then Concerta 36mg, in the morning, then down to 27mg, then I came off the meds. Too sensitive. I have anxiety disorders and it's made worse by stimulants, also got chest pains, headaches, bad loss of appetite/nausea etc. It was quite bad. Wasn't tried on anything else. Was told if meds didn't work, don't got ADHD. -.- Yeh, k then... *lol*

Anyway, good luck on them.