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Angiotensin II antagonists: a new class of antihypertensive agent
British Journal of Clinical Practice
Losartan is an orally active angiotensin II antangonist that selectively blocks effects mediated by the stimulation of the AT1 subtype of the angiotensin II receptor. This agent, at doses of 50-150mg/day, is as effective at lowering blood pressure as chronic angiotensin converting enzyme (ACE) inhibitors. Losartan is generally well tolerated and has an incidence of adverse effects very similar, in double-blind controlled trials, to that of placebo. It does not cause coughing, the most common side-effect of the ACE inhibitors, most probably because angiotensin II antagonism has no impact on ACE, an enzyme known to process bradykinin and other cough-inducing peptides. Losartan is a promising antihypertensive agent with the potential to become a first-line option for the treatment of patients with high blood pressure.
Antihypertensive Agents/pharmacokinetics/*pharmacologyBiphenyl Compounds/pharmacokinetics/*pharmacologyHumansImidazoles/pharmacokinetics/*pharmacologyLosartanReceptors, Angiotensin/*antagonists & inhibitorsTetrazoles/pharmacokinetics/*pharmacology
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