Horny Goat Weed (Epimedium) and bone

What 3 graded rows on horny goat weed (epimedium) agree on for bone, and where they differ. Counted side by side, never averaged.

What the rows agree on

Each block and row is one graded row from the Horny Goat Weed (Epimedium) page, with its PubMed record.

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Horny Goat Weed (Epimedium) and bone

3 rows · 960 people

They agree: all 3 rows found an improvement.

No difference
Improved
Each block is one evidence row, sized by how many people it enrolled, with its grade inside.
  • Grade C× 2
  • Grade D× 1
Rows
3
Trials
11
People
960
Pooled reviews may count some twice

What the rows share

From the rows

The best-graded row, grade C, is a meta-analysis of 817 people (2025) and found an improvement.

The rows run from 58 to 817 people, published from 2007 to 2025: 1 pooled review and 2 single studies.

The rows

3 improved
  1. Grade CBone mineral density in primary osteoporosis · Improved

    Meta-analysis, 9 studies · n 817 · 2025 · 9 RCTs with lumbar spine data (of 10 RCTs, 890 participants in all) in adults with primary osteoporosis, almost all in China; n from full text (GRADE table, lumbar BMD)

    Not reported in the abstract; varied by preparation · 3–24 months of follow-up (full text)

    Lumbar spine (SMD 1.15; 95% CI 0.61 to 1.70) and femoral neck bone density (SMD 1.11; 95% CI 0.58 to 1.65) were higher than in controls, and overall response was more frequent (OR 3.80). Adverse reactions were few, mainly mild stomach upset or skin allergy.

    Row on the Horny Goat Weed (Epimedium) page · PubMed 41048931 (opens PubMed)

  2. Grade CSpine and hip bone mineral density in late postmenopausal women · Improved

    RCT · n 85 · 2007 · Healthy late postmenopausal women with low bone density (T-score −2 to −2.5), Hong Kong

    One daily dose of the flavonoid mix; all participants also received 300 mg calcium · 24 months

    Bone density stayed stable with the flavonoids while the placebo group lost 2.4% at the lumbar spine and 1.8% at the femoral neck; between-group differences were significant at 24 months. A bone-breakdown marker fell 39–43%. Estradiol and endometrial thickness did not change.

    Row on the Horny Goat Weed (Epimedium) page · PubMed 17419678 (opens PubMed)

  3. Grade DSafety and a bone-formation marker (BSAP) with an Epimedium prenylflavonoid extract · Improved

    RCT · n 58 · 2021 · Healthy postmenopausal women aged about 58 (Singapore)

    740 mg/day · 6 weeks

    No significant adverse symptoms and no changes in liver, blood or kidney tests. Prenylflavonoid intake was associated with higher bone-specific alkaline phosphatase (p<0.05) and a non-significant trend toward lower TRAF6, an osteoclast marker.

    Row on the Horny Goat Weed (Epimedium) page · PubMed 34352588 (opens PubMed)

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