Medical Dictionary

alpha–blocker

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noun al·pha–block·er \-ˌbläk-ər\

Medical Definition of alpha–blocker

  1. :  any of a group of drugs (as doxazosin and terazosin) that combine with and block the activity of an alpha-receptor to relax smooth muscle (as of blood vessels) and are used especially to treat hypertension and benign prostatic hyperplasia—compare beta-blocker


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