ADHD teenager

Can we try cutting my son's 54mg concerta tablet in half. He is experiencing kind of a zoned out feeling, even though he is able to concentrate, he feels strange on it. Can we try cutting it in half?

[Sandman2]

   Definitively  NOT!  It is a time release med and specially formulated.  If you cut it he could wind up getting the whole thing released at once into his system.   Talk with his doc about getting a smaller dose.  He is on the largest one now.  Did the doc slowly work him up to that?   The zoned out feeling could indicate the dose is too high.
   Let me know if you need more info.  Best wishes.  
Oh, if you don't mind - let us know what the doc does.