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Compound

Beta-Sitosterol

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Beta-Sitosterol. Plant sterol for BPH and cholesterol.

How it works. Inhibits cholesterol absorption; 5-AR effects.

What the research supports. 1 graded claims. Strongest: Reduces BPH symptoms (moderate).

How much to take. Typical dose: 60–130 mg.

Side effects and interactions. 1 medication interaction listed. No serious side effects listed at normal doses.

Stacking. Pairs well with Omega-3, CoQ10.

Common forms. Available as Capsule or softgel, Powder, Sublingual or buccal, Liposomal liquid.

Key studies. 8 studies cited. The strongest are listed with links to PubMed.

Community. Experiences from people who have tried Beta-Sitosterol. Anecdotes are not medical advice.

Beta-Sitosterol. Plant sterol for BPH and cholesterol.

Molecular structureC29H50O · 414.7 g/mol

What it is

Plant sterol for BPH and cholesterol.

Food sources

Endogenously produced or biosynthesized moleculeStandardized pharmaceutical- or food-grade supplementCombined with cofactors that improve absorption or activity

Goals

Men's HealthCardiovascular Health

How it works

Inhibits cholesterol absorption; 5-AR effects.

Pathways

  • Inhibits cholesterol absorption
  • 5-AR effects

Effects

  • ↓BPH symptoms decreases

What the research supports

Reduces BPH symptomsmoderate

Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.

Typical dose
60–130 mg
TimingConsistent daily timing recommended; split larger doses if GI tolerance is a concern.
With foodWith a meal containing fat for fat-soluble compounds; otherwise either.
Best formMost evidence is based on the capsule or softgel form.
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Side effects & interactions

Common side effects

  • GI upset

Medication interactions

Prescription medications (general)minor

Always disclose Beta-Sitosterol use to your prescriber — additive, antagonistic, or pharmacokinetic interactions are possible.

Check any supplement–medication combination with your pharmacist before starting.

Combines with

Pairs well

  • Omega-3Anti-inflammatory cardiovascular synergy.
  • CoQ10Supports mitochondrial energetics in cardiac tissue.

Common forms

  • Capsule or softgel
  • Powder
  • Sublingual or buccal
  • Liposomal liquid

Key studies

8 studies cited in total.

Beta-sitosterol in BPH ↗
Meta-analysis · Cochrane · 1999

Improved urinary symptoms.

PubMed: Beta-Sitosterol — Reduces BPH symptoms ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Beta-Sitosterol and "Reduces BPH symptoms". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Beta-Sitosterol — randomized controlled trial ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Beta-Sitosterol and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

Discussion

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