# Ginsenoside Re

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/ginsenoside-re
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-04
**Evidence Score:** 2 / 10
**Category:** Compound
**Also Known As:** Panax ginseng saponin Re, Protopanaxadiol ginsenoside Re, Ginseng saponin Re, Re ginsenoside, Ginsenoside-Re, 20S-protopanaxadiol ginsenoside Re, Korean ginseng saponin Re, Asian ginseng ginsenoside Re

## Overview

Ginsenoside Re is a protopanaxatriol-type saponin isolated from Panax ginseng that exerts its primary effects by modulating AMPK signaling, suppressing NF-κB [inflammatory pathway](/ingredients/condition/inflammation)s, and scavenging [reactive oxygen species](/ingredients/condition/antioxidant). It demonstrates [neuroprotective](/ingredients/condition/cognitive), anti-inflammatory, antioxidant, and potential anticancer activities backed by preclinical and early clinical research.

## Health Benefits

• Acts as an antioxidant, potentially reducing [oxidative stress](/ingredients/condition/antioxidant) [2]. • Provides [neuroprotective effect](/ingredients/condition/cognitive)s, possibly supporting brain health [2]. • Demonstrates [anti-inflammatory](/ingredients/condition/inflammation) properties, which may alleviate inflammation-related conditions [2]. • Shows antineoplastic activity, suggesting a role in cancer prevention [2]. • Offers nephroprotective benefits, potentially safeguarding kidney function [2].

## Mechanism of Action

Ginsenoside Re activates the AMPK/SIRT1 pathway, improving [mitochondrial biogenesis](/ingredients/condition/energy) and reducing [oxidative stress](/ingredients/condition/antioxidant) by upregulating Nrf2-mediated antioxidant enzymes including SOD and catalase. It suppresses the NF-κB signaling cascade, thereby reducing [pro-inflammatory cytokine](/ingredients/condition/inflammation) production such as TNF-α, IL-1β, and IL-6. Additionally, it modulates estrogen receptor beta (ERβ) activity and inhibits voltage-gated calcium channels, contributing to its [neuroprotective](/ingredients/condition/cognitive) and cardioprotective effects.

## Clinical Summary

Most evidence for ginsenoside Re comes from in vitro cell studies and rodent models, where doses of 10–50 mg/kg demonstrated measurable reductions in [inflammatory](/ingredients/condition/inflammation) markers and [oxidative stress](/ingredients/condition/antioxidant) parameters. Small human trials using standardized ginseng extracts enriched in ginsenoside Re have shown modest improvements in [insulin sensitivity](/ingredients/condition/weight-management) and fasting glucose in type 2 diabetic patients, though isolate-specific human RCTs remain limited. A 2019 pilot study involving 40 participants found that ginseng extract containing Re improved [cognitive](/ingredients/condition/cognitive) task performance versus placebo, but the contribution of Re alone could not be isolated. Overall, evidence quality is promising but preliminary, and larger, well-controlled human trials are needed to establish definitive efficacy.

## Nutritional Profile

Ginsenoside Re is a purified triterpenoid saponin compound (protopanaxatriol-type ginsenoside) isolated primarily from Panax ginseng, Panax quinquefolius, and related species. It is not a macronutrient source and contributes negligible calories, fat, protein, or carbohydrates in its supplemental form. As a bioactive compound, its profile is defined by its molecular characteristics: Molecular formula C48H82O18, molecular weight approximately 947.15 g/mol. It contains a dammarane-type aglycone backbone with a sugar chain consisting of glucose and rhamnose residues attached at the C-6 position. Typical concentrations in standardized ginseng root extracts range from 0.1% to 0.5% w/w, with isolated supplement forms providing doses of 1–20 mg per serving in clinical research contexts. Bioavailability is limited after oral ingestion due to poor intestinal absorption; gut microbiota metabolize Ginsenoside Re into secondary metabolites including Ginsenoside Rh1 and protopanaxatriol, which are the primary bioavailable forms reaching systemic circulation. Peak plasma concentration is generally achieved 2–4 hours post-ingestion. No significant vitamins, dietary minerals, or dietary fiber are inherently associated with this isolated compound. Its pharmacological activity is concentration-dependent, and co-administration with bioavailability enhancers (e.g., piperine) has been studied to improve absorption, though data remain preliminary.

## Dosage & Preparation

No clinically studied dosage ranges for ginsenoside Re are specified. It appears in high concentrations in commercial P. ginseng extracts. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Ginsenoside Re is generally well tolerated at doses found in standardized ginseng extracts, with mild side effects including headache, gastrointestinal upset, and [insomnia](/ingredients/condition/sleep) reported primarily with high-dose whole-ginseng use. It may potentiate the effects of anticoagulants such as warfarin by inhibiting platelet aggregation, increasing bleeding risk, and caution is warranted with antiplatelet drugs like clopidogrel. Due to its mild estrogenic activity via ERβ modulation, individuals with hormone-sensitive conditions such as breast cancer or endometriosis should consult a physician before use. Pregnancy and breastfeeding safety has not been established for isolated ginsenoside Re, and its use is not recommended during these periods.

## Scientific Research

No specific human clinical trials or meta-analyses for ginsenoside Re alone are available. The existing data are predominantly from animal and in vitro studies, indicating a lack of robust clinical evidence [1][2].

## Historical & Cultural Context

Ginsenoside Re is a constituent of Panax ginseng, which has been used for centuries in Traditional Chinese Medicine. However, no specific historical uses for isolated ginsenoside Re are documented [1][2].

## Synergistic Combinations

Panax ginseng, Rhodiola rosea, Ashwagandha, Turmeric, Green tea extract

## Frequently Asked Questions

### What is ginsenoside Re and how is it different from other ginsenosides?

Ginsenoside Re is a protopanaxatriol (PPT)-type saponin from Panax ginseng, structurally distinguished by a glucose-rhamnose disaccharide at C-6 and a hydroxyl group at C-6 of the aglycone. Unlike protopanaxadiol (PPD)-type ginsenosides such as Rb1 and Rg3, Re has preferential affinity for estrogen receptor beta and unique ion channel-modulating properties, giving it a distinct neuroprotective and cardioprotective profile.

### What dose of ginsenoside Re is used in research studies?

Animal studies most commonly use doses of 10–50 mg/kg body weight administered orally or intraperitoneally, which does not translate directly to human dosing. Human studies typically use standardized Panax ginseng extracts (200–400 mg/day) containing a spectrum of ginsenosides including Re at roughly 1–3% of total extract weight, meaning isolated Re intake is rarely quantified independently in clinical settings.

### Can ginsenoside Re help with blood sugar control?

Preclinical evidence indicates ginsenoside Re activates AMPK in skeletal muscle and adipose tissue, enhancing GLUT4 translocation and improving insulin sensitivity in diabetic mouse models at 20 mg/kg/day. Small human trials using ginseng extracts enriched in Re reported modest reductions in fasting glucose (approximately 10–15%) in type 2 diabetics, though isolate-specific RCTs are lacking and results should be interpreted cautiously.

### Does ginsenoside Re interact with any medications?

Ginsenoside Re may enhance the anticoagulant effect of warfarin and other blood thinners by inhibiting thromboxane B2-mediated platelet aggregation, potentially increasing bleeding risk. It may also interact with hypoglycemic drugs like metformin by additively lowering blood glucose through overlapping AMPK activation, requiring blood sugar monitoring if combined. Patients on CYP3A4-metabolized drugs should exercise caution, as ginseng constituents including Re have shown weak CYP enzyme inhibition in vitro.

### Is ginsenoside Re neuroprotective and can it help with Alzheimer's disease?

In rodent models of Alzheimer's disease, ginsenoside Re (20–40 mg/kg) reduced amyloid-beta plaque accumulation and attenuated neuroinflammation by suppressing microglial NF-κB activation and lowering IL-1β and TNF-α levels in hippocampal tissue. It also promoted neuronal survival by activating the PI3K/Akt/Bcl-2 anti-apoptotic pathway. Human evidence remains indirect, derived from mixed-ginsenoside ginseng extract trials, and clinical use for Alzheimer's cannot yet be recommended without dedicated Re-specific trials.

### Is ginsenoside Re safe for pregnant women or nursing mothers?

Limited human safety data exists for ginsenoside Re supplementation during pregnancy and lactation. Most ginseng preparations are typically avoided during pregnancy and breastfeeding due to insufficient evidence of safety in these populations. Pregnant or nursing women should consult a healthcare provider before using ginsenoside Re or ginseng-derived supplements.

### What is the evidence quality for ginsenoside Re's antioxidant and anti-inflammatory effects?

Current evidence for ginsenoside Re's antioxidant and anti-inflammatory properties comes primarily from in vitro and animal studies, with limited human clinical trials. While laboratory research demonstrates promising free radical scavenging and cytokine-modulating activity, large-scale human studies are needed to confirm therapeutic efficacy and optimal dosing. The strength of evidence is considered moderate for these mechanisms compared to its better-studied blood sugar and neuroprotective effects.

### Can ginsenoside Re support kidney health, and what does research show about its nephroprotective effects?

Ginsenoside Re demonstrates nephroprotective potential in animal and cellular studies, showing the ability to reduce kidney damage markers and support renal function. Research suggests it may help protect against drug-induced or diabetes-related kidney injury through its antioxidant and anti-inflammatory mechanisms. However, human clinical evidence remains limited, and individuals with existing kidney disease should consult their healthcare provider before supplementing.

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