Does anyone else take generic IR ritalin? I was wondering why it seems to be much more effective sometimes than others. I'm supposed to take it at least 30 minutes before eating, and sometimes that works, but sometimes it seems more effective if I take it about 15 minutes after eating.

It seems to also last longer sometimes, and shorter other times. I take 10mg every 3 to 4 hours. The third dose, the one I take after lunch around 3PM, is the most effective.