Table 1: Therapeutic groups that can cause serotonin syndrome [4].
| Therapeutic group | Medication examples |
| SSRI antidepressants | Fluvoxamine, paroxetine, sertraline |
| Miscellaneous | Lithium, trazodone, mirtazapine |
| Opioids | Pethidine, tramadol, methadone |
| Tricyclic antidepressants | Clomipramine, imipramine, amitriptyline |
| Parkinson's disease treatment | Selegiline, rasagiline, levodopa |
| Antibacterials | Linezolid |
| Anti-cancer drugs | Procarbazine |
| Anticonvulsants | Carbamazepine, valproate |
| Antiemetics | Metoclopramide, ondansetron, granisetron |
| Antihistamines | Chlorphenamine |
| Antimigraine drugs | Rizatriptan, sumatriptan, zolmitriptan |
| Anti-smoking aids | Bupropion |
| Anxiolytics | Buspirone |
| Diagnostic dye | Methylthioninium chloride |
| Herbal products | St John's wort |