| Digitalis |
| Digoxin (predominantly oral; intravenous form available) |
| Phosphodiesterase inhibitors |
| Milrinone (intravenous) |
| Enoximone* (intravenous) |
| Calcium-sensitizing agents |
| Levosimendan* (intravenous) |
| Pimobendan* (oral) |
| Beta-receptor agonists |
| High-dose dopamine (intravenous) |
| Dobutamine (intravenous) |
