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    Did you mean Renin-Angiotensin-Aldosterone System?
    GlossaryRenin-Angiotensin System

    hormone system regulating blood pressure and fluid balance

    The Renin-Angiotensin System (RAS), also known as the Renin-Angiotensin-Aldosterone System (RAAS), is a hormone system that regulates blood pressure and fluid balance in the body. When blood pressure drops, the kidneys release the enzyme renin, which triggers a cascade of reactions leading to the production of angiotensin II, a potent vasoconstrictor that increases blood pressure and stimulates the release of aldosterone from the adrenal glands, promoting sodium and water retention.

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      Rapid Blood Pressure Control With Minoxidil

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      19 citations, May 1979 in “Archives of internal medicine”
      Minoxidil effectively lowers blood pressure and initially increases plasma renin activity without raising aldosterone levels.
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      community Being Safe on Oral Minoxidil: tl;dr on the literature.

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