Indirect vasodilators – inhibition of exogenous vasoconstrictio

• Alfa-beta non-selective antagonists (carvedilol, labetolol etc.)
• Angiotensin converting enzymes inhibitors “ACE inhibitors”  (captopril, enalapril, lisinopril etc.)
• Angiotensin-II type 1 receptors inhibitors (losartan, candesartan, valsartan etc.)
• Alfa 1-2 adrenergic receptors selective agonists
• Centrally acting drugs (metyldopa, clonidine etc.)

Direct vasodilators – acting from inside the vessels

• Nitric oxide (NO)
• Venous vasodilators (nitroglycerine)
• Venous-arterial vasodilators (nitroprusside)
• Arterial vasodilators (minidoxil, hydralazide, fenoldopam)

Vasoconstrictors

• Bosentan – “endothelin antagonist”