C.S.
I, too, have a son that suffers from tics (motor and phonic). I recently read some information about magnesium being deficient in kids with tics (it has to do with muscle control). I don't know the research behind it and have not had the opportunity to seek it out yet. It is hard...there is so much information/help(?) out there, but it is hard to filter out the money making schemes from the really helpful material. Blessings on this...and know that you are not alone!
C.