ADHD combined type, without the H (i.e. predominantly inattentive) dxed at 30 after years of thinking I just wasn't smart like the other kids.

So re: 15mg xr; it's my undersanding that xr basically means you get half the med up front shortly after you take it and then the other half hours later. So in your case it would be 7.5 mg shortly after taking it and 7.5mg is released lateron in the day.

I take 20xr twice a day which I think is WAY too much for me but it's gotten to the point I have to take it just to get **** done. Plus im on a pretty sedating AD....bleh.