My doctor has had me on the Ritalin SA at 20MG for about 4 months now to treat my ADHD, I also take other medications for my Bi-Polar Disorder - Lamictal, Celexa and I have Trazodone that can be used at bedtime if Im having a problem sleeping. Its seems like the Ritalin works really well for me until around noon. Then its gone, I cant focus on anything, Im jumping from one thing to the next and getting nothing done! Does it just wear off? Do I need a higher dose or maybe I should try something else? I need to think clearly after lunch too. Help!