While drugs should be treated as extreme measures, more often than not they are prescribed immediately after hypertension or even pre-hypertension has been confirmed. 
It’s worth noticing that possible side effects of drugs can outweigh the ailment they are to treat. If the level of blood pressure is not risky, do try to improve your health by natural means before taking pills. Try and change your life following simple recommendations given below.Stop smoking; take a drink or two instead 

We all are aware of how dangerous smoking is. It is especially hazardous for your blood pressure. 

ACE inhibitors (Angiotensin-Converting Enzyme)   

The class includes trandolapril, quinapril, ramipril, lisinopril, perindopril, enalapril, fisinopril, cilazapril, captopril, to name a few. 
They decrease the level of angiotensin II in the blood, which is responsible for narrowed blood vessels. As a result, vessels start to widen and become more flexible. The pressure of blood going through them is reduced. 
ACE inhibitors are highly recommended in case of diabetes and cardiac failure. Among contra-indications are pregnancy, renal failure, and certain problems with arteries.Prescribing of an ACE inhibitor is preceded by a blood test to make sure that the patient has got healthy kidneys. In two weeks one more blood test is obligatory as well as in two weeks after enlarging of the dosage. After that a test is taken once a year (as a rule).