SIADH: a serious side effect of psychotropic drugs

In this communication two cases of possibly drug induced hyponatremia secondary to amitriptyline and thioridazine have been reported. What is particularly important is the fact that in one, irreversible neurological symptoms were left as sequelae and in the other, the patient was in a coma and thus suffered from a potentially lethal complication. The physicians should be aware of this disturbing side effect while treating their patients with antidepressant and neuroleptic medications.