Aliskiren Hemifumarate

**Semantic type:** Pharmacologic Substance

**Definition:** An orally active nonpeptide renin inhibitor with antihypertensive activity. Aliskiren selectively binds to the S3 sub-pocket of renin, an enzyme in the renin-angiotensin-aldosterone system (RAAS) that is responsible for converting angiotensinogen to angiotensin I (AT I). By inhibiting the activity of renin, the conversion to AT I is prevented, which in turn prevents the conversion of AT I to AT II. This prevents arterial vasoconstriction by AT II and inhibits the production of aldosterone by AT II. As aldosterone causes re-uptake of sodium and water and eventually an increase in extracellular volume, aliskiren is able to prevent the effects that contribute to an increase in blood pressure.

**Synonyms:** - ALISKIREN HEMIFUMARATE - Aliskiren Fumarate - Bis((2S,4S,5S,7S)-5-amino-N-(3-amino-2,2-dimethyl-3-oxopropyl)-4-hydroxy-7-(4-methoxy-3-(3-methoxypropoxy)benzyl)-8-methyl-2-(1-methylethyl)nonanamide) (2E)-but-2-enedioate