| Histamine H1 receptor antagonists† |
| Azelastine 0.05% (Optivar) | One drop twice daily | $140 ($108) for 6 mL |
| Emedastine 0.05% (Emadine) | One drop four times daily | NA ($72) for 5 mL |
| Mast cell stabilizers‡ |
| Cromolyn sodium 4% (Crolom) | One or two drops every four to six hours | $32 ($45) for 10 mL |
| Lodoxamide 0.1% (Alomide) | One or two drops four times daily | NA ($98) for 10 mL |
| Nedocromil 2% (Alocril) | One or two drops twice daily | NA ($90) for 5 mL |
| Mast cell stabilizers and H1 receptor antagonists |
| Ketotifen 0.025% (Zaditor; available over the counter as Alaway) | One drop every eight to 12 hours | NA ($70) for 5 mL |
| Olopatadine 0.1% (Patanol) | One drop twice daily | NA ($96) for 5 mL |
| Nonsteroidal anti-inflammatory drugs |
| Ketorolac 0.5% (Acular) | One drop four times daily | $110 ($161) for 5 mL |
| Vasoconstrictor/antihistamine§ |
| Naphazoline/pheniramine (available over the counter as Opcon-A, Visine-A) | One or two drops up to four times daily | NA ($6 to $11) for 15 mL |