New evidence
Ginseng improved a measure of artery function by an effect size of 0.57 in a meta-analysis — but this single analysis of only 328 people is the first real evidence on the topic.
This is promising early data that ginseng may modestly improve how well blood vessels dilate, but with just one small meta-analysis on this specific question, the finding needs replication before it can be treated as reliable.
A meta-analysis of 328 participants found that ginseng supplementation led to a statistically significant improvement in flow-mediated dilation (FMD), a test that measures how well your arteries widen in response to increased blood flow. The same analysis also found that ginseng reduced arterial stiffness (measured by pulse wave velocity) and increased nitric oxide levels, but it had no significant effect on the augmentation index, another measure of arterial stiffness. Because this is among the first studies to look at ginseng and vascular function, the results are intriguing but not yet enough to act on.
Where this fits in the evidence
This is among the first studies we've indexed on Ginseng for Improved Flow-Mediated Dilation — treat it as an early signal until more research accumulates.
The study
- Meta-Analysis
- n = 328
- 2025-07-11
- BMC complementary medicine and therapies
This is a plain-language summary of a research finding, not medical advice. Pillser surfaces research signals to help you decide what's worth investigating — always consult a qualified professional before changing what you take.