Laura - posted on 08/20/2009 ( 226 moms have responded )
My son has been on Concerta for probably 4 or so years. I noticed 2 or 3 years ago that he would repeat things like snapping his fingers over and over and over. The last couple of years he smacks his lips and isn't even aware of it. I was convinced he had a minor case/form of Tourrettes but this summer he was off the concerta most of the time and the smacking went away all together. Last week I started the concerta and now the smacking has returned. So I guess I know this is a side effect but has anyone else had this?