| Condition | First-Line Antiemetic | Considerations/Contraindications |
| Renal Failure / Hypercalcemia / Toxin Induced Vomiting | Haloperidol | Contraindicated in Parkinson’s disease. Levomepromazine or Cyclizine are alternatives |
| Increased Intracranial Pressure (ICP) or Bowel Obstruction | Cyclizine | Suitable for ICP or bowel obstruction scenarios |
| Delayed Gastric Emptying (e.g., Peritoneal Metastasis) | Metoclopramide | Prokinetic, do not use with Parkinson’s disease |
| Chemotherapy or Radiotherapy Induced Vomiting | Ondansetron | Effective for chemo or radiotherapy-induced nausea and vomiting |
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