1. Selective serotonin reuptake inhibitors (SSRIs) such as Prozac (fluoxetine), Zoloft (sertraline), and Lexapro (escitalopram) 2. Serotonin and norepinephrine reuptake inhibitors (SNRIs) such as Cymbalta (duloxetine) and Effexor (venlafaxine) 3. Tricyclic antidepressants (TCAs) such as Elavil (amitriptyline) and Tofranil (imipramine) 4. Monoamine oxidase inhibitors (MAOIs) such as Nardil (phenelzine) and Parnate (tranylcypromine) 5. Atypical antidepressants such as Wellbutrin (bupropion) and Remeron (mirtazapine)