Carvedilol is generally a medium-acting drug, not a long-acting drug. Carvedilol is generally a medium-acting drug because it reaches a high blood concentration after one hour of oral administration and has a half-life of about 7 to 10 hours. Carvedilol can be used as an antihypertensive drug and is a commonly used therapeutic drug in cardiovascular diseases. It should be swallowed whole, not broken or chewed, and the specific dosage of Carvedilol should be prescribed by the doctor. Carvedilol has the effect of blocking both β-receptors and α-receptors, and can also block calcium channels at high concentrations. Its pharmacological effects include: lowering blood pressure, reducing myocardial contractility, relaxing vascular smooth muscle, and reducing peripheral resistance.