Eucommia bark (Du Zhong) and blood pressure
What 4 graded rows on eucommia bark (du zhong) agree on for blood pressure, and where they differ. Counted side by side, never averaged.
Consensus finder Rows from the Eucommia bark (Du Zhong) page, reviewed Oct 21, 2026 How it decides
What the rows agree on
Each block and row is one graded row from the Eucommia bark (Du Zhong) page, with its PubMed record.
Your question
Eucommia bark (Du Zhong) and blood pressure
4 rows · 248 peopleSplit. 2 rows found an improvement and 2 found no difference.
- CGrade C× 2
- DGrade D× 2
- Rows
- 4
- Trials
- 4
- People
- 248
Where they differ
From the rowsThe best-graded row, grade C, is a randomized trial of 136 people (2025) and found no difference.
The 2 rows that found no difference ran longer (8 weeks to 3 months) than the 2 rows that found an improvement (2 to 4 weeks).
The rows
2 improved · 2 no difference- CGrade COffice and 24-hour blood pressure in grade 1 hypertension · Improved
RCT · n 58 · 2022 · Chinese adults with low-to-moderate-risk grade 1 hypertension (3 centres)
Not stated in the abstract · 4 weeks (after a 1-week sham lead-in)
Office systolic and diastolic pressure changed by -7.62 and -4.66 mmHg (p < .05) and diastolic variability improved versus control; no differences in other measures, including most 24-hour readings. Adverse events were mild.
Row on the Eucommia bark (Du Zhong) page · PubMed 36703729 (opens PubMed)
- DGrade DBlood pressure in mildly raised blood pressure (2 weeks) · Improved
RCT · n 30 · 2011 · Healthy US adults with blood pressure 120-160/80-100 mmHg
1 g three times daily (3 g/day) · 2 weeks
24-hour ambulatory blood pressure fell by an average of 7.5/3.9 mmHg and the extract was well tolerated.
Row on the Eucommia bark (Du Zhong) page · PubMed 22214253 (opens PubMed)
- CGrade CBlood-pressure rhythm when added to usual medicines · No difference
RCT · n 136 · 2025 · Chinese adults with essential hypertension and an abnormal day-night blood-pressure rhythm, on their usual medicines
1.48 g twice daily · 12 weeks
No significant difference in blood-pressure variability (SD and CV) in the full or per-protocol analysis. In the subgroup not using calcium channel blockers, 24-hour diastolic variability improved more.
Row on the Eucommia bark (Du Zhong) page · PubMed 41132538 (opens PubMed)
- DGrade DBlood pressure in mildly raised blood pressure (8 weeks, lower dose) · No difference
RCT · n 24 · 2011 · Healthy US adults with blood pressure 120-160/80-100 mmHg
500 mg three times daily (1.5 g/day) · 8 weeks
No difference in 24-hour ambulatory blood pressure between the two groups and no toxicity.
Row on the Eucommia bark (Du Zhong) page · PubMed 22214253 (opens PubMed)