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Table 2 Drugs associated with serotonin toxicity used in the ICU/MCU

From: Unsuspected serotonin toxicity in the ICU

Serotonergic drugs n = 44
Fentanyl (n) 36
Tramadol (n) 2
Metoclopramide (n) 7
Ondansetron (n) 7
CYP 3A4 inhibitor concomitantly (n) 16
CYP 2D6 inhibitor concomitantly (n) 24
  1. ICU intensive care unit, MCU medium care unit, n number, CYP 3A4 inhibitor cytochrome P450 3A4 iso-enzyme inhibitor, CYP2D6 inhibitor cytochrome P450 2D6 iso-enzyme inhibitor