Supplement Scholar
Compound

Genistein

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Genistein. Soy isoflavone with bone benefits.

How it works. ERβ agonist; tyrosine kinase inhibitor.

What the research supports. 1 graded claims. Strongest: Reduces bone loss (moderate).

How much to take. Typical dose: 54 mg.

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

Stacking. Pairs well with A high-quality multivitamin, Omega-3 (EPA/DHA).

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 Genistein. Anecdotes are not medical advice.

Genistein. Soy isoflavone with bone benefits.

Molecular structureC15H10O5 · 270.24 g/mol

What it is

Soy isoflavone with bone benefits.

Food sources

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

Goals

Bone HealthWomen's Health

How it works

ERβ agonist; tyrosine kinase inhibitor.

Pathways

  • ERβ agonist
  • tyrosine kinase inhibitor

Effects

  • ↓bone loss decreases

What the research supports

Reduces bone lossmoderate

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
54 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 Genistein 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

  • A high-quality multivitaminCovers micronutrient cofactors that support most supplement pathways.
  • Omega-3 (EPA/DHA)Foundational anti-inflammatory support that complements most regimens.

Common forms

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

Key studies

8 studies cited in total.

PubMed: Genistein — Reduces bone loss ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Genistein and "Reduces bone loss". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Genistein — randomized controlled trial ↗
Systematic review · PubMed (NLM) · 2026

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

PubMed: Genistein — meta-analysis ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Genistein and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

Discussion

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