Malignant neurolept hyperthermia (NMS) seen in all except -: (A) Haloperidol, (B) Metoclopramide, (C) Domperidone, (D) Amantadine
Answer is D. Amantidine is used for the treatment of the neuroleptic malignant syndrome.

Drugs causing neuroleptic malignant syndrome:-

Antipsychotics Phenothiazines (chlorpromazine), butyrophenones (Haloperidol, penfluridol), thioxanthenes (thiothixene, molindone).
Antiemitics Metoclopramide, domperidone.