Antihypertensives are a class of drugs that are used to treat hypertension (high blood pressure).  Evidence suggests that reduction of the blood pressure by 5–6 mmHg can decrease the risk of stroke by 40%, of coronary heart disease by 15–20%, and reduce the likelihood of dementia, heart failure, and mortality from cardiovascular disease.  There are many classes of antihypertensives, which lower blood pressure by different means;
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