This may seem a strange question. My son is on his 3rd week of Concerta. 18mg week 1, 36mg week 2 and now on 54mg. He is having trouble saying if it is having any positive effect. The first week he had a low level headache for a few days, which wore off. Now he is on the high dose he said he is having trouble getting to sleep at night ( not that he usually goes to bed early), and his appetite is reduced. He also said today that he feels like something isn’t quite right but he doesn’t know what. If these feeling continue over the next couple of days, we will report to his prescriber.
It’s a bit awkward because he has left school and isn’t starting college until 12th September, so he hasn’t had to focus on things he is not interested in.
How long does it take for positive effects to be noticed, and the side effects to reduce? I would be grateful for any information you have .