Beneficial effects |
| At alpha-1 receptor: |
Increased vasoconstriction (at low doses) |
Increased peripheral vascular resistance |
Increased blood pressure |
Decreased mucosal edema (eg, in larynx) |
At beta-1 receptor: |
Increased heart rate (chronotropy) |
Increased force of cardiac contraction (inotropy) |
At beta-2 receptor: |
Decreased mediator release from mast cells and basophils |
Increased bronchodilation |
Increased vasodilation |
Adverse effects*¶Δ |
Common and transient | Anxiety, palpitations, pallor, tremor, fear, restlessness, dizziness, headache |
Uncommon (typically occur after overdose) | Ventricular arrhythmias, angina, myocardial infarction, pulmonary edema, sudden sharp increase in blood pressure, intracranial hemorrhage |