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Gynostemma pentaphyllum (Jiaogulan)
An adaptogenic herb (jiaogulan) whose saponins (gypenosides) activate AMPK; moderate evidence for lipid-lowering (lower triglycerides, higher HDL) and modest weight/fat loss, plus single-trial signals for hair and exercise.
What the evidence says
Most Gynostemma studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.
Most evidence is from high-quality meta-analyses and randomised trials published 2006–2026 with a typical study size of 584 participants.
Based on 16 studies · 1 meta-analysis · 9 RCTs · 600 total participants
Confidence
Moderate confidenceBy outcome
A small mostly-preclinical meta-analysis plus one weight-loss RCT support modest lipid and fat-mass benefits, but the broader hair and exercise claims each rest on a single trial, one of them sponsor-conflicted.
1 trial ongoing or recruiting · 10 completed on ClinicalTrials.gov
1 of the completed trials have posted results
Registered trials show research momentum for Gynostemma, not proof of effect — a registration is a plan, and posted results are sponsor-reported, not peer-reviewed. They are never counted toward the evidence rating above.
Browse these trials on ClinicalTrials.govClinicalTrials.gov · as of Sep 2026
Gynostemma pentaphyllum (jiaogulan, 'southern ginseng') is an adaptogenic vine rich in gypenosides — saponins structurally similar to ginsenosides that activate AMPK, the cellular energy sensor.
Its best human evidence is metabolic: a meta-analysis confirms it lowers triglycerides and raises HDL cholesterol, and a 12-week RCT of a heat-processed extract (actiponin) showed modest weight, fat-mass, and BMI reductions in obese adults.
Broader claims rest on single trials — one 24-week RCT found improved hair density/elasticity, and a small crossover study reported better exercise performance. Overall a moderate-evidence metabolic adaptogen; effects are real but modest, and several outcomes hang on one trial each.
Gypenosides activate AMP-activated protein kinase, the cellular energy sensor that increases fat oxidation and glucose uptake.
Regulates triglyceride and cholesterol handling, lowering TG and raising HDL.
Ginsenoside-like saponins with antioxidant and stress-modulating activity.
How Gynostemma works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
Avoid — insufficient data.
Monitor blood glucose — additive lowering possible.
AMPK activation may add to glucose-lowering — monitor for hypoglycemia.
Tip: Take with food; reduce dose
Tip: Monitor blood glucose
Gynostemma has an evidence score of 4.5/10 — emerging evidence based on 9 indexed studies, including 1 meta-analysis. An adaptogenic herb (jiaogulan) whose saponins (gypenosides) activate AMPK; moderate evidence for lipid-lowering (lower triglycerides, higher HDL) and modest weight/fat loss, plus single-trial signals for hair and exercise. Representative study: PMID 37129524.
The commonly studied dose of Gynostemma is 450mg standardized extract daily (actiponin weight studies used ~450mg/day); tea uses 2-4g dried herb. Individual needs vary — start at the lower end of the range and adjust based on how you respond.
The best time to take Gynostemma is with meals. Take it with food. Taken with food; consistency over weeks needed for metabolic/lipid effects.
Gynostemma is generally safe at recommended doses, with a few precautions worth noting. Reported side effects are uncommon and include nausea/GI upset, mild hypoglycemia (with antidiabetics). Use caution if any of these apply to you: Pregnancy and breastfeeding (insufficient data); Use with diabetes/blood-pressure medications (monitor).
Green Tea Extract
Likely helpsConcentrated catechins from green tea that support metabolism, fat oxidation, brain health, and antioxidant defense.
Cinnamon
Mostly mechanism / observationalA polyphenol-rich spice studied mainly for modest improvements in blood sugar and blood lipids; choose Ceylon to limit coumarin.
Bergamot
Likely helpsCitrus extract studied for cholesterol management — several positive trials on LDL and triglycerides, though evidence is mixed.
Glucomannan
Likely helpsAbsorbs up to 50x its weight in water, creating strong satiety — supports weight loss, blood sugar regulation, and cholesterol reduction.
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Reviewed by Dr. Baher Al Hakim · Last reviewed June 2026 · evidence from 16 studies · how we score · editorial policy
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.
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