... doctor started him on 6mg for one month,now 12.5 for a month. She is going slow because he has ADHD and she says zoloft can cause decreased inhibition in these kids.She said she will keep him on 25mg for several months. I appreciate her caution, but my son is not doing well and I feel like this is taking too long. Any one else have a child with AdHD on zoloft for ocd?