Hypertension's medication.

Hypertension is caused by increased blood volume compared to the space available inside the blood vessels. Strategies use in treating hypertension are:
1-Volume reduction by using diuretics (hydrochlorothiazide, furosemide (Lasix), amiloride, spironolactone, mannitol), angiotensin converting enzyme inhibitors (perindopril, enalapril, captopril) and angiotensin receptor blockers ( telmisartan, valsartan).
2-Brain's sympathetic ("fight and flight") blockage with central anti adrenergics (clonidine, methyldopa)
3-Block adrenergic receptors in the heart by using beta blockers (metaprolol, propranolol)
4-Dilate blood vessels with angiotensin converting enzyme inhibitor, calcium antagonists (nifedipine, amlodipine (Norvasc), felodipine(Plendil)), alpha 1 adrenergic blockers (prazosin (Minipress), terazosin (Hytrin), Doxazosin (Cardura)) and potassium channel activator(minoxidil).