Drug classGeneric nameUsual dosage range
Thiazide-type diureticschlorthalidone12.5 – 25 mg daily
hydrochlorothiazide (HCTZ)25 – 50 mg daily
Thiazide combinationslisinopril-HCTZ10/12.5; 20/12.5; 20/25 mg daily
spironolactone-HCTZ25/25 mg daily
ACE inhibitors (ACEIs)lisinopril10 – 40 mg daily
captopril12.5 – 50 mg twice daily
Long-acting dihydropyridine calcium channel blockersamlodipine besylate2.5 – 10 mg daily
felodipine2.5 – 10 mg daily
nifedipine ER30–90 mg daily
Beta-blockers (BB)atenolol25 – 100 mg daily
carvedilol3.125 – 25 mg twice daily
metoprolol tartrate25 – 100 mg twice daily
metoprolol succinate25 – 200 mg daily
Aldosterone receptor blockerspironolactone12.5 – 25 mg daily
Potassium-sparing diureticsamiloride hydrochloride or amiloride-HCTZ5 – 10 mg total, taken daily or twice daily
Angiotensin II receptor blockers (ARB)losartan potassium25 – 100 mg daily
Direct vasodilatorshydralazine hydrochloride10–50 mg four times daily
minoxidil2.5 mg daily – 20 mg twice daily
Alpha blockersterazosin hydrochloride1 – 20 mg daily
doxazosin mesylate1 – 16 mg daily
prazosin hydrochloride1 – 10 mg twice daily
Alpha-2 agonistsclonidine hydrochloride0.1 – 0.4 mg twice daily