Herbal Monograph
Jiaogulan (绞股蓝)
Gynostemma pentaphyllum (Thunb.) Makino
Cucurbitaceae (Gourd/Cucumber family)
Cooling adaptogen with cardiovascular and metabolic benefits — 'southern ginseng' with ginsenoside-identical saponins
Overview
Plant Description
Herbaceous, climbing or trailing perennial vine. Stems slender, angular, pubescent when young, growing 3–8 m in favorable conditions. Tendrils bifid, arising laterally from leaf nodes. Leaves alternate, palmately compound with typically 5 leaflets (occasionally 3 or 7), arranged digitately. Leaflets ovate-lanceolate to elliptic, 3–9 cm long, 1.5–3 cm wide, with serrate margins, acute apex, and pubescent lower surface. Dioecious — male and female flowers on separate plants. Inflorescences axillary or terminal panicles, 10–30 cm long. Flowers tiny (2–3 mm), greenish-white to pale yellow, star-shaped with 5 deeply divided petals. Fruit a small, spherical berry, 5–8 mm diameter, dark green to black when ripe, containing 2–3 seeds. The whole plant has a slightly sweet, mildly bitter taste.
Habitat
Forested ravines, shaded slopes, thickets, stream banks, and limestone karst hillsides, typically at elevations of 300–3,200 m. Prefers shade or partial shade in moist, well-drained soil. Naturally occurs as an understory vine in subtropical and warm-temperate forests. Tolerates a range of soil types but prefers calcareous, humus-rich soils.
Distribution
Native to southern China, Japan, Korea, and Southeast Asia (Vietnam, Laos, Thailand, Indonesia, India). In China, found across southern provinces including Yunnan, Guizhou, Sichuan, Hubei, Hunan, Guangxi, Guangdong, Fujian, Zhejiang, Jiangxi, Shaanxi, and Gansu. Particularly abundant in Guizhou, Yunnan, and Guangxi provinces. Jiaogulan's fame partly originated from observations of unusual longevity in southern Chinese mountain communities where it was consumed daily as a tea.
Parts Used
Leaves and aerial parts (herba)
Preferred: Dried leaf for tea/infusion; standardized gypenoside extract in capsules; tincture
The leaves are the primary medicinal part and contain the highest concentration of gypenosides (triterpenoid saponins). Young, pre-flowering leaves are considered to have the highest quality. The leaves are consumed as a daily health tea in southern China and are the form used in most clinical studies. The entire aerial herb (leaves, stems, tendrils) is used in some preparations, but leaves alone are preferred for standardized extracts.
Key Constituents
Triterpenoid saponins (gypenosides / gynosaponins)
The gypenoside fraction is the primary basis for jiaogulan's adaptogenic, cardioprotective, anti-cancer, and metabolic effects. The remarkable chemical overlap with Panax ginseng ginsenosides provides a pharmacological rationale for the similar adaptogenic profile. However, jiaogulan's much broader saponin diversity (100+ compounds vs. ~30 in ginseng) may explain some of the unique properties and broader therapeutic range. The bidirectional regulatory effects characteristic of adaptogens (e.g., normalizing both hypertension and hypotension, stimulating and calming immune function) are attributed to the complex saponin mixture.
Flavonoids
The flavonoid fraction contributes antioxidant, anti-inflammatory, and cardioprotective effects synergistic with the gypenosides. Flavonoids also support capillary integrity and reduce vascular inflammation.
Polysaccharides
The polysaccharide fraction contributes to immune modulation and may partially explain the hypoglycemic effects. Polysaccharides are best extracted by water (tea/decoction) rather than alcohol.
Carotenoids and chlorophyll
Minor contribution to overall antioxidant capacity. The chlorophyll content supports the traditional use as a detoxifying tea.
Vitamins and trace elements
The mineral and vitamin content supports the traditional use as a daily health-promoting tea. Selenium and zinc are particularly relevant to the immune-supporting and antioxidant claims.
Herbal Actions
Helps the body adapt to stress and restore homeostasis
Jiaogulan is one of the most well-characterized adaptogenic herbs. The dammarane-type gypenosides modulate the HPA axis, normalize cortisol levels under stress, enhance stress tolerance, and improve physical and mental performance. Animal studies show improved swimming endurance, reduced stress-induced organ damage, and normalized adrenal weight under chronic stress. The adaptogenic profile is bidirectional — jiaogulan has been shown to both stimulate and sedate depending on the organism's state, a hallmark of true adaptogens. The chemical overlap with Panax ginseng ginsenosides (Rb1, Rd) provides a molecular basis for the adaptogenic parallels.
[1, 2]Prevents or slows oxidative damage to cells
Potent antioxidant activity through multiple mechanisms: direct radical scavenging by gypenosides and flavonoids, upregulation of endogenous antioxidant enzymes (superoxide dismutase/SOD, catalase, glutathione peroxidase/GSH-Px), and enhancement of the Nrf2-ARE antioxidant response pathway. Jiaogulan extracts increase SOD activity — this 'endogenous antioxidant enhancement' effect is considered one of the key pharmacological findings, as it represents a more sustainable antioxidant strategy than simple radical scavenging.
[1]Strengthens and tones the heart muscle
Comprehensive cardiovascular protection: lipid-lowering (reduces total cholesterol, LDL, and triglycerides while increasing HDL), anti-atherosclerotic (inhibits foam cell formation and plaque development), antihypertensive (enhances NO-mediated vasodilation), antiplatelet (inhibits platelet aggregation), and cardioprotective (protects against ischemia-reperfusion injury). Multiple clinical studies in China have documented lipid-lowering and blood pressure effects.
[1, 2]Modulates and balances immune function
Bidirectional immune modulation — enhances suppressed immune function while modulating overactive immunity. Gypenosides stimulate NK cell activity, enhance macrophage phagocytosis, and increase lymphocyte proliferation in immunosuppressed models, while demonstrating anti-inflammatory and immunosuppressive effects in autoimmune and hypersensitivity models. This bidirectional quality is consistent with the adaptogenic profile.
[1]Protects the liver from damage
Protects the liver through antioxidant mechanisms (enhanced SOD and GSH-Px in hepatic tissue), anti-inflammatory effects (reduced NF-κB activation in liver), and direct hepatocyte protection. Demonstrated in multiple chemical hepatotoxicity models (CCl4, acetaminophen, alcohol) and in non-alcoholic fatty liver disease (NAFLD) models.
[1]Lowers blood pressure
Lowers blood pressure through enhanced endothelial NO production, ACE-inhibitory activity of certain gypenosides, and mild diuretic effects. Clinical studies in China have documented blood pressure reductions in hypertensive patients.
[2]Reduces inflammation
Broad anti-inflammatory activity through inhibition of NF-κB, COX-2, iNOS, and pro-inflammatory cytokines (TNF-α, IL-1β, IL-6). Multiple gypenosides demonstrate anti-inflammatory effects through complementary mechanisms.
[1]Enhances cognitive function, memory, and mental performance
Cognitive-enhancing effects observed in animal models: improved learning and memory (Morris water maze), increased BDNF expression, neuroprotection against ischemic and oxidative neuronal damage. The ginsenoside Rb1 content (shared with Panax ginseng) is well-established as neuroprotective. Consistent with the adaptogenic stress-resilience profile.
[1]Therapeutic Indications
Cardiovascular System
Hyperlipidemia (elevated cholesterol and triglycerides)
Multiple clinical studies in China, involving hundreds of patients, have documented lipid-lowering effects of jiaogulan preparations. Typical findings include: reduction in total cholesterol by 10–25%, reduction in LDL-cholesterol by 15–30%, reduction in triglycerides by 15–35%, and increase in HDL-cholesterol by 10–20%. Mechanisms include enhanced hepatic LDL receptor expression, inhibition of HMG-CoA reductase (statin-like mechanism), and increased bile acid excretion. The effect is consistent across multiple studies though most are of moderate methodological quality.
[1]Hypertension
Clinical studies have documented blood pressure reductions in hypertensive patients taking jiaogulan preparations. Mechanisms include enhanced NO-mediated vasodilation, ACE-inhibitory activity, and mild diuretic effects. Effect is modest — useful as adjunct to medical management or for mild/borderline hypertension.
[2]Atherosclerosis prevention
Gypenosides inhibit foam cell formation (a key step in atherosclerotic plaque development), reduce vascular inflammation, improve endothelial function, and inhibit platelet aggregation. Preclinical evidence is strong. The combined lipid-lowering, anti-inflammatory, antioxidant, and antiplatelet effects represent a comprehensive anti-atherosclerotic profile.
[1]Endocrine System
Type 2 diabetes and metabolic syndrome
Gypenosides improve insulin sensitivity, enhance glucose uptake in skeletal muscle, reduce hepatic glucose output, and protect pancreatic beta cells from oxidative damage. Animal studies show significant blood glucose reductions. A Vietnamese randomized controlled trial (Huyen et al., published in Hormone and Metabolic Research, 2010) demonstrated that jiaogulan tea significantly improved fasting glucose, HbA1c, and insulin sensitivity in type 2 diabetic patients compared to placebo. This is one of the better-designed human studies for jiaogulan.
[1]Immune System
Immune deficiency and recurrent infections
Gypenosides enhance NK cell activity, stimulate macrophage phagocytosis, and increase splenic lymphocyte proliferation in immunosuppressed animal models. Used traditionally as an immune tonic for people prone to frequent colds and infections. The bidirectional immune modulation means it can be used where both immune deficiency and inappropriate immune activation coexist.
[1]Cancer adjunct therapy (immune support and chemoprotection)
Gypenosides have demonstrated antiproliferative effects against multiple cancer cell lines in vitro (lung, liver, breast, colon, stomach). In vivo, they inhibit tumor growth and metastasis in animal models. Several gypenosides induce apoptosis through mitochondrial and death receptor pathways. Clinically, jiaogulan has been studied as an adjunct to chemotherapy — enhancing immune recovery and reducing side effects (fatigue, myelosuppression) during cancer treatment. Used widely in China as a cancer adjunct herb.
[1]Hepatobiliary System
Non-alcoholic fatty liver disease (NAFLD)
Gypenosides reduce hepatic fat accumulation, improve lipid metabolism, reduce liver inflammation, and protect hepatocytes from oxidative damage. In high-fat-diet animal models, jiaogulan extract significantly reduced hepatic steatosis and fibrosis markers. The combination of lipid-lowering, anti-inflammatory, and antioxidant effects makes it particularly suited for the metabolic liver disease context.
[1]Chemical and drug-induced liver injury (hepatoprotection)
Demonstrated hepatoprotective effects in CCl4, acetaminophen, and alcohol-induced liver injury models. Mechanisms include enhanced hepatic SOD and GSH-Px activity, reduced lipid peroxidation, and anti-inflammatory NF-κB inhibition.
[1]Nervous System
Chronic stress and fatigue (adaptogenic support)
The primary traditional use as an adaptogenic tonic for stress resilience, energy, and vitality. Animal studies confirm improved endurance, reduced stress-induced organ damage, and HPA axis normalization. The gentle, non-stimulating nature makes jiaogulan suitable for long-term use as a daily stress-management herb. Unlike caffeine or stimulating adaptogens, jiaogulan does not cause overstimulation or insomnia.
[1, 2]Anxiety and stress-related tension
The calming aspect of jiaogulan's bidirectional adaptogenic profile is valued for anxiety and stress-related tension. Unlike warming, stimulating adaptogens (Rhodiola, Panax ginseng), jiaogulan has a mildly calming quality that can reduce anxiety while maintaining mental clarity. Used in TCM for patterns combining fatigue and anxiety/restlessness.
[2]Respiratory System
Chronic bronchitis (as adjunct)
Clinical studies in China have reported improvement in chronic bronchitis symptoms (cough, sputum production, dyspnea) with jiaogulan preparations. Proposed mechanisms include anti-inflammatory effects on bronchial mucosa, immunomodulating support for respiratory defense, and antioxidant protection against oxidative damage in lung tissue.
[1]Energetics
Temperature
slightly cool to neutral
Moisture
moist
Taste
Tissue States
heat/inflammation, atrophy/deficiency
In TCM energetics: flavor is sweet and slightly bitter; nature is slightly cold (some sources say neutral to cool). Channel tropism: Lung, Spleen, Kidney. The combined sweet and bitter taste reflects its dual nature as both a nourishing tonic (sweet) and a detoxifying, heat-clearing herb (bitter). The slightly cooling nature makes jiaogulan suitable for people with both deficiency AND heat signs — unlike Panax ginseng, which is warming and can aggravate heat conditions. This thermal difference is clinically significant: jiaogulan is often recommended for patients who 'need ginseng but can't tolerate ginseng's heat.' In Western energetic terms, jiaogulan nourishes without overstimulating, making it appropriate for a broader range of constitutions than warming adaptogens.
Traditional Uses
Chinese folk medicine (southern China)
- Daily health tea consumed by mountain communities in Guizhou, Guangxi, and Sichuan provinces — associated with unusual longevity and low cancer rates in these communities
- Nicknamed 'Immortality Herb' (Xiancao / 仙草) by local populations
- Used as a general tonic for energy, vitality, and resistance to disease
- Consumed before strenuous physical work for endurance and recovery
- Used for coughs, chronic bronchitis, and respiratory weakness
- Applied for digestive complaints and poor appetite
- Used to reduce high blood pressure and 'thick blood'
- Consumed as a diabetes-supportive tea
- Used for insomnia and restless sleep
- Given to elderly patients as a rejuvenating tonic
"Jiaogulan was not documented in classical Chinese pharmacopeias — it was a folk medicine of the southern mountain communities, unknown to the literati physicians of northern China who wrote the canonical materia medica texts. Its discovery by modern science came in the 1970s when Japanese researchers (Masahiro Nagai, 1976) identified gypenosides in the plant and noted their structural similarity to ginsenosides. Simultaneously, Chinese census data revealed unusually high rates of centenarians in Guizhou mountain communities where jiaogulan tea was consumed daily. The 1986 Chinese National Conference on Traditional Medicine formally recognized jiaogulan, and it was subsequently included in the Chinese Pharmacopoeia as a health-promoting supplement."
[2]
Traditional Chinese Medicine (modern TCM integration)
- Classified as sweet, slightly bitter, cool/cold; enters the Lung, Spleen, and Kidney channels
- Supplements Qi and nourishes Yin — used for Qi deficiency patterns (fatigue, weakness, shortness of breath)
- Clears Heat and resolves toxins — used for inflammatory and 'toxic heat' conditions
- Moistens the Lung and transforms phlegm — used for chronic cough and bronchitis
- Used for patterns combining Qi deficiency with Heat — where the patient is tired yet restless, depleted yet inflamed
- Considered a safer alternative to Panax ginseng for patients with Heat signs (red face, irritability, high blood pressure) who need tonification
"Jiaogulan's integration into formal TCM is relatively recent (post-1980s). It is now included in modern Chinese materia medica texts and is widely prescribed by TCM practitioners for metabolic and cardiovascular conditions. Its advantage over Panax ginseng for 'hot constitution' patients is well-recognized in contemporary TCM clinical practice."
Japanese herbal medicine (Kampo-adjacent)
- Known as Amachazuru (甘茶蔓, 'sweet tea vine') in Japan
- Consumed as a health tea, particularly after the discovery of gypenosides by Japanese researchers in the 1970s
- Used for stress relief, fatigue, and metabolic support
- Became a popular health supplement in Japan in the 1980s–1990s
- Studied extensively by Japanese pharmaceutical researchers for anti-tumor and adaptogenic properties
"Japanese researcher Masahiro Nagai's identification of gypenosides in 1976 launched the modern scientific investigation of jiaogulan. Japanese interest in the plant was driven by the search for alternative sources of dammarane saponins (traditionally obtained from expensive Panax ginseng). The discovery that a common wild vine contained ginsenoside-identical compounds generated significant commercial and scientific interest in Japan."
[1]
Western clinical herbalism (modern adoption)
- Adopted into Western practice primarily as an adaptogenic herb, often positioned as a 'gentle, cooling alternative to ginseng'
- Used for chronic fatigue, stress management, and adrenal support
- Included in cardiovascular formulas for hyperlipidemia, hypertension, and metabolic syndrome
- Used as an antioxidant and anti-aging tonic
- Recommended for type 2 diabetes support (blood glucose management)
- Used as an immune modulator, particularly for patients with both immune deficiency and autoimmune tendencies
- Increasingly used as a cancer adjunct for immune support during chemotherapy
- Popular as a daily adaptogenic tea
"Jiaogulan entered Western herbal awareness in the 1990s–2000s through the work of researchers and authors like Michael Blumert and Jialiu Liu ('Jiaogulan: China's Immortality Herb,' 1999). Its adoption has accelerated as Western herbalists seek adaptogens with cooling energetics to balance the warming nature of ginseng and ashwagandha. It is now considered a core adaptogenic herb in integrative clinical practice."
[1]
Modern Research
Lipid-lowering effects — clinical evidence
Multiple clinical studies in China have investigated the lipid-lowering effects of jiaogulan preparations in hyperlipidemic patients.
Findings: In controlled and open-label clinical studies involving over 500 patients collectively, jiaogulan preparations (standardized gypenoside extracts and crude herb preparations) consistently demonstrated: reduction in total cholesterol (10–25%), reduction in LDL-cholesterol (15–30%), reduction in triglycerides (15–35%), and increase in HDL-cholesterol (10–20%). Total effective rates (patients showing clinically meaningful lipid improvements) ranged from 67–93% across studies. The lipid-lowering mechanism involves inhibition of HMG-CoA reductase (similar to statins), enhanced LDL receptor expression, increased bile acid excretion, and reduction of intestinal cholesterol absorption.
Limitations: Most studies are Chinese, with variable methodological quality. Many are open-label or have small sample sizes. Blinding is inconsistent. Publication bias is likely (negative studies less likely to be published). Well-designed, large-scale RCTs by Western standards are lacking. However, the consistency of results across multiple independent studies provides reasonable evidence.
[1]
Anti-diabetic effects — randomized controlled trial
A Vietnamese RCT investigated the effects of jiaogulan tea on glycemic control in type 2 diabetes patients.
Findings: In this randomized, double-blind, placebo-controlled trial (Huyen et al., published in Hormone and Metabolic Research, 2010), 24 drug-naïve type 2 diabetes patients received either jiaogulan tea (6g/day) or placebo tea for 12 weeks. The jiaogulan group showed significant reductions in: fasting plasma glucose (mean decrease ~54 mg/dL vs. ~8 mg/dL in placebo), HbA1c (mean decrease 2% absolute vs. 0.2% in placebo), and HOMA-IR (insulin resistance index, mean 2.1 decrease vs. 0.4). No significant adverse effects were reported. This is one of the better-designed human studies for any jiaogulan indication.
Limitations: Small sample size (24 patients). Single-center study. Patients were drug-naïve (not on diabetes medication), which may limit applicability to medicated patients. 12-week duration — longer-term effects unknown. Needs replication in larger multicenter trials.
[1]
Adaptogenic and anti-fatigue effects
Preclinical studies have evaluated the adaptogenic profile of jiaogulan using standard adaptogen testing models.
Findings: Gypenoside extracts demonstrate the core criteria for adaptogenic classification: (1) increased nonspecific resistance to stress — improved forced swim time, heat tolerance, and cold tolerance; (2) normalizing effect — corrects both hyper- and hypo-function depending on the model; (3) no significant side effects at therapeutic doses. Specific findings include: increased swimming endurance (40–70% improvement over control), reduced stress-induced adrenal hypertrophy, normalized corticosterone levels under chronic stress, and protection against stress-induced gastric ulceration. The bidirectional regulatory effect has been demonstrated for blood pressure (normalizes both hypertension and hypotension in animal models), immune function, and blood glucose.
Limitations: Almost entirely animal data. The adaptogenic profile is well-characterized preclinically but human adaptogenic trials (measuring stress resilience endpoints) are limited. The concept of 'adaptogen' itself remains debated in conventional pharmacology.
[1]
SOD enhancement — endogenous antioxidant upregulation
A key pharmacological finding is jiaogulan's ability to enhance endogenous antioxidant enzyme production, particularly superoxide dismutase (SOD).
Findings: In both animal studies and limited human data, jiaogulan gypenoside extracts significantly increase tissue and serum levels of superoxide dismutase (SOD), catalase, and glutathione peroxidase (GSH-Px). The SOD-enhancing effect is particularly notable — SOD is the primary intracellular antioxidant enzyme and its activity declines with age. The mechanism involves Nrf2-ARE pathway activation, upregulating transcription of endogenous antioxidant enzyme genes. This is considered a more clinically meaningful antioxidant effect than simple radical scavenging by exogenous antioxidants.
Limitations: Most SOD data is from animal studies. The human data on SOD enhancement is limited to small Chinese clinical studies. The clinical significance of enhanced SOD levels for disease prevention and aging is biologically plausible but not proven in long-term human trials.
[1]
Anti-cancer effects — preclinical evidence
Gypenosides have been studied extensively for antiproliferative and antitumor activity across multiple cancer types.
Findings: Gypenosides demonstrate antiproliferative activity against cell lines from: lung cancer, hepatocellular carcinoma, breast cancer, colon cancer, gastric cancer, leukemia, prostate cancer, and oral squamous cell carcinoma. Mechanisms include: induction of apoptosis through mitochondrial and death receptor pathways, cell cycle arrest at G0/G1 and G2/M phases, inhibition of angiogenesis (VEGF suppression), inhibition of metastasis (MMP-2/MMP-9 reduction), and enhancement of NK cell cytotoxicity against tumor cells. In animal tumor models, gypenoside treatment reduced tumor growth and metastasis.
Limitations: Predominantly in vitro and animal data. Human cancer clinical trials are very limited — primarily Chinese studies using jiaogulan as adjunct to chemotherapy (reporting improved quality of life and immune recovery). Jiaogulan is NOT a proven cancer treatment and should not be used as a substitute for conventional oncology.
[1]
Hepatoprotective effects in NAFLD models
Studies have investigated gypenosides for non-alcoholic fatty liver disease, a growing global health concern.
Findings: In high-fat-diet-induced NAFLD models in rats and mice, gypenoside treatment: reduced hepatic steatosis (fat accumulation in liver), lowered serum and hepatic triglyceride levels, reduced liver inflammation (TNF-α, IL-6), decreased oxidative stress markers (MDA), increased hepatic SOD and GSH-Px, and reduced progression to fibrosis. Mechanisms include activation of AMPK (a key metabolic sensor), inhibition of SREBP-1c (lipogenic transcription factor), and enhancement of fatty acid β-oxidation.
Limitations: Animal models only for NAFLD. No human NAFLD clinical trials. Animal NAFLD models may not perfectly replicate human disease progression. Dose extrapolation uncertain.
[1]
Preparations & Dosage
Infusion (Tea)
Strength: 2–5 g dried leaf per 250 mL
Pour 250 mL boiling water over 2–3 g (approximately 1 teaspoon) of dried jiaogulan leaves. Cover and steep for 3–5 minutes. Strain and drink. The leaves can be re-infused 3–5 times (traditional Chinese gongfu-style brewing). The taste is mildly sweet with a slight bitterness — very palatable as a daily tea. For stronger therapeutic effect, use 3–5 g per cup and steep 5–10 minutes.
2–3 cups daily for general health maintenance. 3–5 cups daily for therapeutic use.
2–5 cups daily.
May be used long-term as a daily health tea. This is the traditional pattern of use — daily consumption over years.
Not well studied in children. Half adult dose may be appropriate for children over 12.
Tea/infusion is the traditional preparation and the form used in the longevity-associated communities of southern China. The leaves withstand multiple infusions, making it economical. This is one of the most pleasant-tasting adaptogenic herbs — far more palatable than most ginseng preparations. The gentle taste and safety profile make it ideal for daily, long-term use.
[2]
Standardized Extract
Strength: Standardized to 80–98% total gypenosides. DER varies by manufacturer.
Commercially prepared capsules or tablets standardized to gypenoside content. Quality products are typically standardized to contain 80–98% total gypenosides.
Standardized extract (80–98% gypenosides): 60–180 mg, 2–3 times daily. Some clinical studies have used 200–400 mg total gypenosides daily. Crude leaf extract (non-standardized): 450–500 mg capsule, 2–3 times daily.
2–3 times daily.
May be used long-term (months to years) for chronic conditions and general health.
Not established.
Standardized extracts provide consistent gypenoside dosing, which is important for therapeutic use (lipid-lowering, blood glucose management). The gypenoside content of raw leaf varies significantly by cultivar and growing conditions, so standardization ensures therapeutic reliability. Look for products specifying total gypenoside content rather than just crude herb weight.
[1]
Tincture
Strength: 1:5 dried leaf in 40–50% ethanol; 1:2 fresh in 25–30% ethanol
Macerate dried jiaogulan leaf in 40–50% ethanol at a ratio of 1:5 for 2–4 weeks. Shake daily. Press and filter. Fresh leaf tincture: 1:2 in 25–30% ethanol.
3–5 mL, 2–3 times daily.
2–3 times daily.
May be used long-term.
Not established.
Tincture is a convenient format for formula use in Western herbal practice. Alcohol extracts the saponins and flavonoids effectively. However, the polysaccharide fraction (important for immune modulation and some hypoglycemic effects) is less well-extracted by alcohol than by water, so tea/infusion is preferred for those specific applications.
[1]
Capsule / Powder
Strength: Crude leaf powder, 450–500 mg per capsule
Powdered dried jiaogulan leaf in capsules. Ensure material is from a reputable source with verified identity and potency.
450–500 mg capsules, 2–3 capsules, 2–3 times daily (1.8–4.5 g total daily).
2–3 times daily.
May be used long-term.
Not established.
Non-standardized crude leaf powder provides the full spectrum of constituents including polysaccharides. Gypenoside content will vary by batch. Suitable for general adaptogenic and tonic use where precise gypenoside dosing is not critical.
[1]
Safety & Interactions
Class 1
Can be safely consumed when used appropriately (AHPA Botanical Safety Handbook)
Contraindications
Jiaogulan is in the Cucurbitaceae. Cross-reactivity with other cucurbit allergies is theoretically possible though not well documented.
Drug Interactions
| Drug / Class | Severity | Mechanism |
|---|---|---|
| Anticoagulant and antiplatelet drugs (warfarin, aspirin, clopidogrel, heparin) (Anticoagulants/Antiplatelets) | moderate | Gypenosides have demonstrated antiplatelet activity (inhibition of platelet aggregation) in preclinical studies. Combined with anticoagulant or antiplatelet medications, there is a theoretical risk of increased bleeding. |
| Immunosuppressant drugs (cyclosporine, tacrolimus, mycophenolate, azathioprine) (Immunosuppressants) | moderate | Jiaogulan's immunomodulating effects could potentially interfere with immunosuppressive therapy. The bidirectional immune modulation is unpredictable — it could enhance or counteract immunosuppression depending on the specific immune parameters being modulated. |
| Antihypertensive medications (ACE inhibitors, ARBs, calcium channel blockers, beta-blockers) (Antihypertensives) | minor | Additive blood pressure-lowering effect. Jiaogulan has demonstrated mild antihypertensive activity through enhanced NO production and mild diuresis. |
| Diabetes medications (metformin, sulfonylureas, insulin) (Hypoglycemic agents) | minor | Additive blood glucose-lowering effect. Jiaogulan has demonstrated hypoglycemic effects in clinical studies. |
| Statin medications (atorvastatin, simvastatin, rosuvastatin) (HMG-CoA reductase inhibitors) | minor | Additive lipid-lowering effect. Gypenosides inhibit HMG-CoA reductase through a mechanism similar to statins. Combination may enhance lipid-lowering efficacy but could also increase the risk of statin-related side effects (myopathy). |
Pregnancy & Lactation
Pregnancy
insufficient data
Lactation
insufficient data
No specific safety data for jiaogulan during pregnancy or lactation. While no adverse reproductive effects have been reported, formal reproductive toxicity studies are lacking. The adaptogenic and immune-modulating effects introduce theoretical uncertainty. Most authoritative sources recommend avoidance during pregnancy and lactation as a precautionary measure until safety data is available. This is a data gap rather than evidence of harm.
Adverse Effects
References
Monograph Sources
- [1] Bone K, Mills S. Principles and Practice of Phytotherapy: Modern Herbal Medicine, Second Edition. Churchill Livingstone/Elsevier, Edinburgh (2013)
- [2] Chevallier A. Encyclopedia of Herbal Medicine, Third Edition. DK Publishing, London (2016)
Clinical Studies
- [3] Huyen VTT, Phan DV, Thang P, Hoa NK, Östenson CG. Antidiabetic effect of Gynostemma pentaphyllum tea in randomly assigned type 2 diabetic patients. Hormone and Metabolic Research (2010) ; 42 : 353-357 . DOI: 10.1055/s-0030-1248298
Traditional Texts
- [4] Gardner Z, McGuffin M (eds.). American Herbal Products Association's Botanical Safety Handbook, Second Edition. CRC Press, Boca Raton (2013)
Last updated: 2026-03-23 | Status: published
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