Finally, there is an ever-expanding list of agents that may cause hyponatremia through various SIADH-related mechanisms, namely by enhancing the release of AVP (neuroleptics, anti-depressant drugs and anti-neoplastic drugs), by potentiating (carbamazepine), or even by mimicking its action on collecting ducts (oxytocin) [174]. Here, AVP is linked to inappropriate ADH syndrome.