Drug Class or DrugExample DrugsSide Effect Risks with Abrupt Withdrawal antidepressants paroxetine (Paxil), Sertraline (Zoloft), Venlafaxine (Effexor) Panic, agitation, worsened depression, nightmares, confusion, insomnia antipsychotics aripiprazole (Abilify), clozapine (Clozaril), olanzapine (Zyprexa), ...