Sertraline
"My 14 yr old son began taking this three months ago to address irritability and OCD related to Tourette's. He also has ADD. At first I thought it was a God send. 

Benefits: Helped his OCD and irritability and anxiety.

Issues: Increased his impulsivity - big time, bruising on legs, stomach pains, diarrhea, constipation.

Taking him off this medicine mainly due to the behavior issues and other side effects."