# Luo Han Guo (Siraitia grosvenorii)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/luo-han-guo
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-02
**Evidence Score:** 2 / 10
**Category:** Traditional Chinese Medicine
**Also Known As:** Monk fruit, Buddha fruit, Longevity fruit, Siraitia grosvenorii, Momordica grosvenori, Arhat fruit, Lo han kuo, Sweet gourd, Immortal fruit, 罗汉果, Luohanguo

## Overview

Luo Han Guo (Siraitia grosvenorii) is a fruit whose primary bioactive compounds, mogrosides — particularly mogroside V — deliver intense non-caloric sweetness and antioxidant activity. These mogrosides exert metabolic effects partly through AMPK pathway activation and [free radical scaveng](/ingredients/condition/antioxidant)ing, making the extract a subject of interest for blood sugar management and oxidative stress reduction.

## Health Benefits

• Potential [antioxidant](/ingredients/condition/antioxidant) effects based on preclinical studies.[2] • Hypoglycemic properties suggested in animal models.[2] • Non-caloric sweetening due to intense sweetness of mogrosides, especially mogroside V.[3] • Preliminary metabolic support via AMPK pathway activation shown in vitro.[1] • Traditional use for respiratory health, such as cough relief.[2]

## Mechanism of Action

Mogroside V, the dominant triterpene glycoside in Luo Han Guo, activates AMP-activated protein kinase (AMPK), a cellular energy sensor that improves glucose uptake and inhibits hepatic gluconeogenesis. The mogrosides also directly scavenge [reactive oxygen species](/ingredients/condition/antioxidant) (ROS) and upregulate endogenous antioxidant enzymes such as superoxide dismutase (SOD) and catalase. Additionally, mogroside V may inhibit alpha-glucosidase activity, slowing intestinal carbohydrate absorption and blunting postprandial glucose spikes.

## Clinical Summary

The majority of evidence for Luo Han Guo comes from in vitro cell studies and rodent models, where mogroside V has demonstrated significant hypoglycemic and [antioxidant](/ingredients/condition/antioxidant) effects at doses of roughly 100–400 mg/kg body weight. A limited number of small human trials and observational studies support its safety as a sweetener, and the FDA has granted it GRAS (Generally Recognized As Safe) status, but rigorous randomized controlled trials (RCTs) in humans examining therapeutic outcomes remain scarce. Animal studies in diabetic mouse models have reported fasting [blood glucose](/ingredients/condition/weight-management) reductions of 20–30% with standardized mogroside extract supplementation. Overall, the evidence is promising but preliminary, and extrapolation of preclinical findings to human clinical outcomes requires caution.

## Nutritional Profile

Luo Han Guo (Siraitia grosvenorii) fruit is extremely low in usable calories in its concentrated extract form due to negligible digestible carbohydrates. Key bioactive compounds include mogrosides (triterpene glycosides), comprising approximately 1–3% of fresh fruit weight and up to 30–40% of dried extract concentrates. Mogroside V is the primary sweetness-conferring compound, typically representing 25–60% of total mogroside content in commercial extracts, with sweetness estimated at 150–300× that of sucrose. Other mogrosides present include mogroside II, III, IV, and siamenoside I. The whole dried fruit contains modest amounts of vitamin C (ascorbic acid), reported in ranges of 30–100 mg per 100 g of dried fruit, though largely degraded during processing. Mineral content includes small amounts of potassium, calcium, phosphorus, and magnesium at levels under 100 mg per 100 g dried fruit. Crude fiber content in whole dried fruit is approximately 5–10 g per 100 g. Protein content is minimal, approximately 1–2 g per 100 g dried fruit. Fixed oils and fatty acids are present in seeds in trace amounts. Bioavailability note: Mogrosides are poorly absorbed in the upper GI tract and are largely metabolized by gut microbiota into secondary metabolites (e.g., mogroside IIIE and isomogroside III), which may be the active systemic forms; systemic bioavailability of intact mogroside V is considered low based on pharmacokinetic animal studies.

## Dosage & Preparation

Clinically studied dosage ranges are not well-defined due to sparse human trials. Commercial extracts are typically standardized to 2-50% mogroside V content. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Luo Han Guo extract is generally well tolerated; no significant adverse effects have been reported in human consumption at culinary or supplemental doses, consistent with its FDA GRAS designation. Because mogrosides may potentiate [blood glucose](/ingredients/condition/weight-management)-lowering effects, concurrent use with antidiabetic medications such as metformin or insulin carries a theoretical risk of additive hypoglycemia and warrants monitoring. There is insufficient clinical data to confirm safety during pregnancy or lactation, so use in these populations is typically advised only under physician guidance. No well-documented herb-drug interactions have been established, though individuals on cytochrome P450-metabolized medications should consult a healthcare provider given the lack of formal interaction studies.

## Scientific Research

Human clinical evidence for Luo Han Guo is limited, with no large-scale RCTs identified. One small human study explored health effects of the fruit juice concentrate, but lacks detailed outcomes.[1] Most evidence is derived from preclinical studies, indicating potential but unconfirmed benefits.

## Historical & Cultural Context

In Traditional Chinese Medicine, Luo Han Guo has been used for over 1,000 years to treat coughs and sore throats and as a general tonic. It is prized for its cooling properties and efficacy in reducing phlegm.[2]

## Synergistic Combinations

Stevia, Cinnamon, Green Tea, Ginger, Turmeric

## Frequently Asked Questions

### What is mogroside V and why does it matter in luo han guo?

Mogroside V is the primary triterpene glycoside in Luo Han Guo fruit, responsible for its sweetness being approximately 200–300 times more intense than sucrose by weight. Beyond sweetness, mogroside V is the compound most studied for antioxidant activity, AMPK activation, and alpha-glucosidase inhibition, making it the key marker compound in standardized extracts.

### Can luo han guo help lower blood sugar?

Preclinical studies in streptozotocin-induced diabetic mouse models have shown mogroside V can reduce fasting blood glucose by roughly 20–30% and improve insulin sensitivity through AMPK pathway activation. However, controlled human clinical trials are currently lacking, so luo han guo cannot be formally recommended as a hypoglycemic therapy and should not replace prescribed antidiabetic medications.

### Is luo han guo safe for daily use as a sweetener?

Yes, the FDA has granted luo han guo extract GRAS status, indicating it is considered safe for use as a sweetener in food and beverages at typical consumption levels. Human studies and regulatory reviews have not identified toxicity at culinary doses, and it contributes zero calories, making it suitable for low-calorie and diabetic-friendly diets.

### What is the typical dosage of luo han guo extract in supplements?

Standardized luo han guo extracts in supplements are commonly dosed at 200–500 mg per day, typically standardized to contain 25–50% mogrosides. Therapeutic dosages used in preclinical research translate to approximately 100–400 mg/kg in rodents, and human-equivalent doses have not been firmly established through RCTs, so manufacturer guidelines and clinician input should be followed.

### How does luo han guo compare to stevia as a natural sweetener?

Both luo han guo (via mogrosides) and stevia (via steviol glycosides such as rebaudioside A) are non-caloric, plant-derived sweeteners with GRAS status, but they differ in flavor profile — luo han guo is often described as having a cleaner, less bitter aftertaste than some stevia preparations. From a metabolic standpoint, both have shown preliminary glucose-regulating activity in preclinical models, though neither has robust human RCT evidence supporting therapeutic use beyond their role as calorie-free sugar substitutes.

### Does luo han guo interact with diabetes medications?

Luo han guo may have hypoglycemic properties, which means it could theoretically enhance the effects of diabetes medications like metformin or insulin, potentially increasing the risk of low blood sugar. Anyone taking prescription diabetes medications should consult their healthcare provider before adding luo han guo supplements to avoid unintended interactions or dosage adjustments. Monitoring blood sugar levels is advisable when combining this ingredient with antidiabetic drugs.

### Is luo han guo safe for children and pregnant women?

While luo han guo has been used traditionally and is generally recognized as safe as a sweetener, specific safety data in pregnant women and children is limited. Pregnant or nursing women should consult their healthcare provider before using luo han guo supplements, as the concentration of active compounds in extracts may differ from traditional food uses. For children, luo han guo sweetener is likely safer than refined sugar, but supplement extracts should only be given under professional guidance.

### What does current clinical research show about luo han guo's antioxidant and metabolic benefits?

Most evidence for luo han guo's antioxidant effects and AMPK pathway activation comes from preclinical studies in cell cultures and animal models, with limited human clinical trials published. While these early results are promising for potential metabolic support, the evidence strength is moderate and more rigorous human studies are needed to establish efficacy and optimal dosing. Traditional use for respiratory health and the safety profile of mogrosides are better-established than their metabolic benefits in humans.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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