Jiaogulan

What it is

Jiaogulan is a climbing vine, Gynostemma pentaphyllum, native to the mountainous regions of southern China and parts of Southeast Asia. Its leaves have a mild, faintly sweet-then-bitter taste and are most often brewed as a tea. The constituents researchers focus on are the gypenosides — a family of saponin compounds structurally related to the ginsenosides found in ginseng, which is part of why jiaogulan is sometimes described as a gentler cousin of ginseng.

It carries an evocative traditional name: xiancao, the "herb of immortality." That name says less about any literal claim and more about the reputation the plant earned in the regions where it grew, where unusually long-lived communities were said to drink it daily.

Traditional use

Jiaogulan's documented history is shorter than black seed's or berberine's — it enters the classical Chinese materia medica comparatively late — but it has a deep folk history in the mountain provinces where it grows wild. There it was, above all, a daily tea: something people drank the way others drink green tea, steadily and unremarkably, as part of ordinary life rather than as a treatment for anything in particular.

In the adaptogen framing that later became popular, jiaogulan was grouped with herbs traditionally used to help the body stay balanced under everyday demands. The through-line in the tradition is steadiness and longevity — a plant for the long, unhurried project of staying well.

What the research actually reports

The modern literature on jiaogulan is smaller than for our other launch botanicals, but there are real randomized trials worth reporting accurately.

On blood lipids, a 2022 systematic review, "Gynostemma pentaphyllum for dyslipidemia: A systematic review of randomized controlled trials," gathered twenty-two randomized controlled trials covering more than two thousand participants and reported that, across the pooled data, jiaogulan supplementation was associated with favorable average changes in several standard cholesterol and triglyceride measures. The authors noted the individual trials varied in quality and design.

On everyday stress, a 2019 randomized, double-blind, placebo-controlled trial by Choi and colleagues, "Supplementation with extract of Gynostemma pentaphyllum leaves reduces anxiety in healthy subjects with chronic psychological stress," published in Phytomedicine, gave healthy adults under self-reported chronic stress a leaf extract twice daily and reported lower measured scores on a standard psychological questionnaire relative to placebo. We report this as what the study examined and measured. In our own framing, the most we will say is that this is consistent with jiaogulan's traditional reputation as a calming daily tea — a botanical people have long used to support a sense of calm. It is not a treatment, and this article makes no claim beyond that.

Researchers have also proposed that some of jiaogulan's activity may involve AMPK, the same cellular energy sensor studied with berberine, which is often cited in the exercise-physiology literature. As always, these are mechanistic hypotheses and averaged study results, not guarantees of any individual outcome.

How people use it

By a wide margin, the most common way to use jiaogulan is as a tea — a teaspoon or so of dried leaf steeped in hot water, drunk once or twice a day. It is naturally caffeine-free, which is why many people favor it as an all-day or evening drink. Standardized gypenoside extracts in capsule form also exist, and the trials above generally used defined extract doses taken twice daily.

The leaf's slightly bitter finish is part of its character; many long-time drinkers come to prefer it plain, though it blends easily with other teas.

Safety notes and interactions

Jiaogulan is generally well tolerated, and the trials above reported no serious adverse effects. The most commonly noted side effect is mild — occasional nausea or loose stools, usually at higher doses.

A few sensible cautions apply. Because some research points to effects on blood-lipid and blood-sugar markers, jiaogulan could in principle add to the effect of medications acting on those systems. There are also documented reports of adaptogenic herbs interacting with prescription antidepressant medications. So if you take any prescription medication — particularly for blood sugar, blood clotting, or mood — talk to your doctor before combining it with jiaogulan. It is also generally advised to avoid it during pregnancy and nursing, where good safety data is lacking.

This article is general information and not medical advice, and jiaogulan is a food-grade botanical, not a substitute for anything your clinician has recommended. Our purpose is to share the tradition, report what the studies have actually examined, and name the cautions worth knowing — and leave the decision with you.