New evidence
A meta-analysis of 584 people found jiaogulan (Gynostemma) cut HbA1c by 1% on average — a large drop, but this is among the first solid evidence for the pairing, so the picture is still early.
This is the first systematic review on jiaogulan for blood sugar control, so the result is promising but far from settled; one analysis can’t tell us whether the effect holds across different doses, longer time frames, or more diverse populations.
Researchers pooled eight clinical studies (584 people) and found that taking jiaogulan reduced HbA1c — a measure of average blood sugar over the prior 2–3 months — by about 1%. This is a meaningful improvement, but because it’s one of the first comprehensive analyses on this herb for diabetes control, the evidence should be treated as preliminary, not definitive.
Where this fits in the evidence
This is among the first studies we've indexed on Jiaogulan for Reduced Glycated Hemoglobin — treat it as an early signal until more research accumulates.
The study
- Systematic Review
- n = 584
- 2026-04-15
- Frontiers in pharmacology
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