The side effects of different antihypertensive drugs are also different. The following is a brief description of the side effects of each type of antihypertensive drug. ACEI class of antihypertensive drugs: mainly refers to Enalapril, Captopril, etc. The common side effects of this class of antihypertensive drugs are irritating cough, angioedema, etc.; ARB class of antihypertensive drugs hardly cause irritating dry cough, but angioedema may also occur. Beta-blockers: The most common side effects of beta-blockers, such as metoprolol, are bradycardia and then bronchospasm. So they should not be used for people who have bradycardia or asthma. Calcium antagonists: There are two types of calcium antagonists. For hypertensive patients, calcium antagonists of the dihydropyridine class are generally used, such as nifedipine extended-release tablets or controlled-release tablets, amlodipine, etc. The side effects of this class of antihypertensive drugs mainly include facial flushing, headache, panic, edema of the ankles, etc. Diuretics: such as hydrochlorothiazide or indapamide, etc. The most common side effects of this class of antihypertensive drugs are dehydration, low potassium and sodium, and elevated blood uric acid. Another type of antihypertensive drug is also commonly used to help lower blood pressure, such as spironolactone, the most common side effect of this drug is hyperkalemia, and long-term use may also affect the endocrine metabolic system. Another type of antihypertensive drug is an alpha-blocker, such as terazosin, and the most common side effect is postural hypotension. For different side effects of antihypertensive drugs, pay attention to these side effects in the process of taking antihypertensive drugs, and once they appear, it is best to find a doctor to make adjustments according to the specific situation.