My son is 11 yrs old and my daughter is 7 yrs old. Both of them suffered from Attention Deficit Hyperactivity Disorder and were prescribed Focalin. Both of them used to urinate in their pant which was never mentioned in the side effects list. I consulted my doctor regarding this but nothing could be done. I also consulted pediatrician also for this but no one could find out any problem. So they were given Metadate and for my surprise it did not cause any side effects. I even filed a complaint on this side effect to Focalin making company and they said they will look after it and will take care about it. My kids really had tuff time with this side effect which was very insulting.