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HEART & CIRCULATION

Beta-Sitosterol (Plant Sterols)

Cholesterol · prostate

STRONG EVIDENCEVEGANREAD THE RESEARCH
Written to our editorial standards · reviewed against published research· Updated 5 Jun 2026
Last reviewed: May 30, 2026
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Beta-Sitosterol: Cholesterol · prostate. The most common plant sterol, used to support healthy cholesterol and, at higher doses, prostate comfort. Standard dose Up to 2 g sterols, taken in the midday, about $14/month. Evidence rating: strong evidence.

Where to buy

NOWFOODSBeta-Sitosterol Plant …90 SOFTGELSDIETARY SUPP.
RECOMMENDED
NOW Foods, Beta-Sitosterol
Up to 2 g sterols · Midday · ~$14/month

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All product options

NOWFOODSBeta-Sitosterol Plant …90 SOFTGELSDIETARY SUPP.BESTSELLER
Beta-Sitosterol Plant Sterols
NOW Foods
90 softgels · $14 · ★ 4.7
Buy on iHerb →Buy on Amazon →
JARROWFORMULASPlant Sterols60 VEG CAPSDIETARY SUPP.BEST VALUE
Plant Sterols
Jarrow Formulas
60 veg caps · $16 · ★ 4.6
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SOURCENATURALSPhytosterol Complex90 TABLETSDIETARY SUPP.PREMIUM
Phytosterol Complex
Source Naturals
90 tablets · $18 · ★ 4.6
Buy on iHerb →Buy on Amazon →
SOLARAYBeta-Sitosterol60 VEG CAPSDIETARY SUPP.PREMIUM
Beta-Sitosterol
Solaray
60 veg caps · $15 · ★ 4.5
Buy on iHerb →Buy on Amazon →

What is Beta-Sitosterol?

Beta-sitosterol is the most abundant of the plant sterols, cholesterol-shaped molecules found in nuts, seeds, and vegetable oils. In the gut it competes with dietary cholesterol for absorption, and regular intake of plant sterols is one of the better-evidenced natural ways to modestly lower LDL cholesterol, backed by approved health claims. At higher concentrated doses, beta-sitosterol is also studied for easing the urinary symptoms that come with an enlarged prostate, with several positive trials. It is well tolerated. To meaningfully affect cholesterol you generally need around 2 g of total plant sterols daily, often from fortified foods, while prostate formulas use smaller standardized amounts.

WHY IT MATTERS

The most common plant sterol, used to support healthy cholesterol and, at higher doses, prostate comfort.

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Common questions

What is Beta-Sitosterol?
Beta-sitosterol is the most abundant of the plant sterols, cholesterol-shaped molecules found in nuts, seeds, and vegetable oils. In the gut it competes with dietary cholesterol for absorption, and regular intake of plant sterols is one of the better-evidenced natural ways to modestly lower LDL cholesterol, backed by approved health claims. At higher concentrated doses, beta-sitosterol is also studied for easing the urinary symptoms that come with an enlarged prostate, with several positive trials. It is well tolerated. To meaningfully affect cholesterol you generally need around 2 g of total plant sterols daily, often from fortified foods, while prostate formulas use smaller standardized amounts.
What is Beta-Sitosterol used for?
Cholesterol · prostate. The most common plant sterol, used to support healthy cholesterol and, at higher doses, prostate comfort.
What is the standard dose of Beta-Sitosterol?
Up to 2 g sterols, typically taken in the midday. Approximate cost is $14 per month.
How strong is the evidence for Beta-Sitosterol?
Strong evidence for its primary uses. See the full study list on the research page.

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