ANTIHYPERTENSIVE DRUGS

1. DIURETICS
    a. Thiazides:
                Hydrochlorothiazide
                Chlorthalidone
                Indapamide

    b. High ceiling:
                Furosemide, etc.

    c. K+  sparing:
                Spironolactone
                Triamterene
                Amiloride

2. RENIN ANGIOTENSIN SYSTEM INHIBITORS
    a. Angiotensin converting enzyme (ACE) inhibitors:
                Captopril
                Enalapril
                Lisinopril
                Perindopril
                Ramipril
                Benazepril
                Trandolapril
                Fosinopril
                Imidapril

    b. Angiotensin (AT1 receptor) antagonists:
                Losartan
               Candesartan
               Irbesartan
               Valsartan
               Telmisartan
               Olmesartan

    c. Renin inhibitor
               Aliskiren
               Ramikiren

3. CALCIUM CHANNEL BLOCKERS  
    a. Phenylalkylamine           
                Verapamil

    b. Benzothiazepine
                Diltiazem

    c. Dihydropyridines
                Nifedipine
                Felodipine
                Amlodipine
                Amlodipine
                Nitrendipine
                Lacidipine
                Benidipine
                Lercanidipine

4. SYMPATHETIC INHIBITORS
    a. β Adrenergic blockers
                Propranolol
                Metoprolol
                Atenolol, etc.

     b. β + α Adrenergic blockers
                Labetalol
                Carvedilol

    c. α Adrenergic blockers
                 Prazosin
                Terazosin
                 Doxazosin
                 Phentolamine
                 Phenoxybenzamine

    d. Central sympatholytics
                Clonidine
                Methyldopa

5. VASODILATORS
    a. Arteriolar:
                Hydralazine
                Minoxidil
                Diazoxide

    b. Arteriolar + venous:
                Sodium Nitroprusside