1. Opioids:
Morphine
Pethidine
Fentanyl
2. Sedative-antianxiety drugs:
Diazepam
Lorazepam
Midazolam
Promethazine
3. Anticholinergics:
Atropine
Hyoscine
Glycopyrrolate
4. Neuroleptics:
Chlorpromazine
Triflupromazine
Haloperidol
5. Antiemetics:
Metoclopramide
Domperidone
Ondansetron
6. Gastric acid suppressant drugs:
a. Histamine H2 blockers:
Ranitidine
Famotidine, etc.
b. Proton pump inhibitors:
Omeprazole
Pantoprazole, etc.