| Dopamine antagonists |
| Haloperidol (Haldol) | 0.5 to 2 mg orally, IV or SC every 6 hours; then titrate the dosage |
| Prochlorperazine (Compazine) | 10 to 20 mg orally every 6 hours, 25 mg rectally every 12 hours, or 5 to10 mg IV every 6 hours |
| Droperidol (Inapsine) | 2.5 to 5 mg IV every 6 hours |
| Thiethylperazine (Torecan) | 10 to 20 mg orally every 6 hours |
| Perphenazine (Trilafon) | 2 to 8 mg orally or IV every 6 hours |
| Histamine H1 receptor blockers (antihistamines) |
| Diphenhydramine (Benadryl) | 25 to 50 mg orally every 6 hours |
| Meclizine (Antivert) | 25 to 50 mg orally every 6 hours |
| Hydroxyzine hydrochloride (Atarax), hydroxyzine pamoate (Vistaril) | 25 to 50 mg orally every 6 hours |
| Promethazine (Phenergan) | 12.5 to 25 mg IV or IM every 4 to 6 hours, or 25 mg orally or rectally every 4 to 6 hours |
| Acetylcholine antagonist (anticholinergic) |
| Scopolamine (Transderm Scop) | 1 to 3 transdermal patches every 72 hours |
| Serotonin antagonists |
| Ondansetron (Zofran) | 8 mg orally three times daily |
| Granisetron (Kytril) | 1 mg orally once or twice daily |
| Dolasetron (Anzemet) | 100 mg orally once daily |
| Prokinetic agent | |
| Metoclopramide (Reglan) | 10 to 20 mg orally every 6 hours |
| Antacids |
| Liquid antacids (various) | 1 to 2 tablespoons every 2 hours as needed |
| Histamine H2 receptor blockers | 800 mg orally at bedtime for ulcers; 800 mg orally twice daily for gastroesophageal reflux |
| | Cimetidine (Tagamet)* |
| | Ranitidine (Zantac) | 150 mg orally twice daily or 300 mg orally at bedtime; decrease dosage by 50% if creatinine clearance is less than 50 mL per minute (0.84 mL per second) |
| | Famotidine (Pepcid) | 20 to 40 mg orally at bedtime for ulcers; 20 to 40 mg orally twice daily for gastroesophageal reflux |
| Proton pump inhibitors | |
| | Omeprazole (Prilosec) | 20 mg orally once daily; dosage should be reduced in Asian patients |
| Lansoprazole (Prevacid) | 15 mg orally once daily |
| Cytoprotective agents |
| Misoprostol (Cytotec) | 200 μg orally two to four times daily |
| Proton pump inhibitors | Same as above |
| Other medications |
| Dexamethasone (Decadron) | 6 to 20 mg orally once daily |
| Dronabinol (Marinol)l | 2.5 to 5 mg orally three times daily |
| Lorazepam (Ativan, Intensol) | 0.5 to 2 mg orally, sublingually or SC every 4 to 6 hours |
| Octreotide (Sandostatin) | 50 to 150 μ g IV or SC every 8 to12 hours; titrate dosage every 24 to 48 hours to achieve and maintain desired effect |