<prompt> All are antiemetics except -DomperidoneOndensetronPhenazocineCyclizine  <response>: Ans. is c i.e., Phenazocine Antiemetic drugs 1. Anticholinergics -- Hyoscine, Dicyclomine. 2. H, antihistaminics -- Promethazine, cyclizine, Cinnarizine, etc. 3. Neuroleptics D2 blockers - Chlorpromazine, Haloperidol, Droperidole etc. 4. Prokinetics drugs -- Metoclopramide, Domperidone, cisapride, Mosapride, Tegaserod. 5. 5-HT3 antagonists -- Ondansetron, Granisetron. Adjuvant antiemetics -- Dexamethasone, BZDs, Cannabinoids, Clonidine ephedrine. 