Calcium antagonists: mainly non-dihydropyridine calcium antagonists, such as amlodipine, felodipine, nifedipine, nicardipine and benidipine. The elderly have arteriosclerosis and high peripheral resistance, so calcium antagonists have a strong vasodilating effect and can play a better role in lowering blood pressure;
2. Diuretics: Commonly used are hydrochlorothiazide, amiloride, spironolactone and furosemide. Older people eat relatively salty food, so they have more salt-sensitive hypertension because of the retention of water and sodium and more volume load. Therefore, after adding diuretics and draining sodium, the antihypertensive effect is better.