What happens if i take zoloft and a mao inhibitor like marplan, nardil, and parnate (tranylcypromine)?

Contraindicated: Taking a monoamine oxidase inhibitor (maoi), such nardil, marplan, or Parnate (tranylcypromine) with a serotonin selective reuptake inhibitor (ssri) such as zoloft is contraindicated. When taken together they can lead to serotonin syndrome. This potentially deadly syndrome may cause agitation or restlessness, fast heart beat, hallucinations, increased body temperature, loss of coordination, and nausea. Seek help!