Those drugs have some bad side effects if they aren't used properly, and most of the time they aren't, especially if someone stops taking them cold turkey. Lots of people just chuck their meds because of the various side effects like tremors.

There is withdrawal symptoms just like a junkie coming off smack. Paxil and Zoloft are two nasty ones for withdrawals too especially in teens.

In fact teens are sensitive when starting Zoloft too,