# Gliricidia (Gliricidia sepium)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/gliricidia-gliricidia-sepium
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-02
**Evidence Score:** 1 / 10
**Category:** South American
**Also Known As:** Mother of cacao, Gliricidia sepium, Kakawate, Mata ratón, Gliricidia sepium (Gliricidia sepium), Madrecacao, Quick stick, Nicaraguan cacao shade tree

## Overview

Gliricidia sepium contains flavonoids (quercetin, kaempferol, apigenin glycosides), tannins, alkaloids, saponins (soyasaponin I and III), and phenolic acids that collectively disrupt parasitic larval development, bacterial membrane integrity, and free-radical activity through dose-dependent biochemical interference. In vitro anthelmintic testing demonstrated larval exsheathment inhibition (LEI) reaching 91.2% at 40 mg/mL with an IC50 of 22.44 mg/mL, and egg hatch inhibition (EHI) with an IC50 of 1.97 mg/mL, representing its most quantitatively characterized pharmacological activity.

## Health Benefits

- **Anthelmintic Activity**: Crude plant extracts inhibit nematode larval exsheathment and egg hatching in a dose-dependent manner; LEI IC50 was recorded at 22.44 mg/mL and EHI IC50 at 1.97 mg/mL, suggesting meaningful antiparasitic potency against gastrointestinal helminths in vitro.
- **Antibacterial Properties**: Flavonoids such as quercetin and kaempferol, alongside tannins and alkaloids, disrupt bacterial cell membrane integrity and inhibit DNA synthesis; ethanolic leaf and bark extracts have demonstrated inhibition zones against multiple bacterial strains at low tested concentrations in vitro.
- **Antioxidant Defense**: Phenolic acids, flavonoids, and tannins contribute to measurable free-radical scavenging, with root extracts showing [antioxidant activity](/ingredients/condition/antioxidant) equivalent to ascorbic acid at a concentration of 20.22 µg/mL; ferric reducing power assays confirm redox-active polyphenol activity.
- **[Anti-inflammatory](/ingredients/condition/inflammation) Potential**: Polyphenolic constituents, particularly flavone glycosides and saponins, inhibit pro-inflammatory mediators at the cellular level; gel formulations derived from leaf extracts have been explored in topical anti-inflammatory applications, suggesting transdermal utility.
- **Wound Healing Support**: Traditional use of leaf poultices for wound management is supported by the combined antibacterial, anti-inflammatory, and astringent tannin activity, which may reduce microbial load and modulate tissue repair signaling at wound sites.
- **Insecticidal and Rodenticidal Properties**: Alkaloid and rotenoid-related compounds contribute to documented toxic effects on insects and rodents, underpinning the plant's historical use in Colombian folk medicine as a pesticide and its common regional name 'mata ratón' (rat killer).
- **Thrombolytic Activity**: Aqueous two-phase system extracts have been explored for thrombolytic properties, with saponins and specific polyphenol fractions hypothesized to interfere with clot formation, though this application remains at a preliminary investigational stage.

## Mechanism of Action

Flavonoids such as quercetin and kaempferol integrate into bacterial phospholipid bilayers, increasing membrane permeability and causing efflux of intracellular components, while also inhibiting DNA gyrase and topoisomerase IV, thereby blocking bacterial replication. Tannins exert astringent effects by binding and precipitating membrane-associated proteins and inhibiting extracellular microbial enzymes, including proteases and glycosidases essential for larval development in helminths. Saponins, specifically soyasaponin I and III, interact with cholesterol-containing membranes of parasitic larvae, disrupting osmotic balance and contributing to the observed larval exsheathment inhibition and egg hatch suppression in a concentration-dependent fashion. Alkaloids present in seeds and bark further modulate insecticidal and antiparasitic activity through [acetylcholine](/ingredients/condition/cognitive)sterase inhibition and interference with neuromuscular junction signaling in invertebrates, consistent with the rotenoid-class mechanisms recognized in Colombian ethnomedicine.

## Clinical Summary

No randomized controlled trials (RCTs) or controlled human clinical studies have been conducted on Gliricidia sepium for any therapeutic indication, representing a significant gap in translational evidence. The most rigorously quantified data come from in vitro anthelmintic assays reporting EHI IC50 of 1.97 mg/mL and LEI IC50 of 22.44 mg/mL, outcomes that, while statistically significant within their experimental design (p < 0.05), cannot be directly extrapolated to human therapeutic dosing without pharmacokinetic and safety bridging studies. Antibacterial activity observed via inhibition zone assays and [antioxidant](/ingredients/condition/antioxidant) equivalence to ascorbic acid at 20.22 µg/mL provide supporting mechanistic context but do not constitute clinical efficacy evidence. Confidence in therapeutic claims for human use is currently very low, and any application should be regarded as experimental pending properly designed preclinical toxicology and Phase I human safety studies.

## Nutritional Profile

Gliricidia sepium leaves contain notable crude protein levels (18–30% dry weight), making them a historically recognized livestock fodder supplement, alongside appreciable dietary fiber, calcium, phosphorus, and beta-carotene precursors. Phytochemical profiling of leaf extracts identifies at least 18 flavonoid compounds including quercetin-3-glucoside, luteolin-7-O-glucoside, kaempferol-3-O-rutinoside-7-O-rhamnoside, myricetin derivatives, and apigenin-di-C-dihexose-O-deoxyhexose; total phenol content in extracts reaches approximately 1.7 mg/mL and total flavonoids approximately 0.46 mg/mL. Saponins including soyasaponin I and III are present in quantifiable amounts, with tannins and condensed proanthocyanidins contributing to astringency and [antioxidant](/ingredients/condition/antioxidant) capacity. Bioavailability of the polyphenolic constituents has not been characterized through human pharmacokinetic studies; the glycosylated flavonoid forms likely require intestinal deglycosylation prior to absorption, and the high tannin content may inhibit co-ingested mineral absorption, particularly iron and zinc.

## Dosage & Preparation

- **Ethanolic Leaf Extract (in vitro reference)**: Concentrations of 0.3–40 mg/mL have been used in anthelmintic studies; no safe oral equivalent dose for humans has been established.
- **Methanolic Extract**: Used in antioxidant and antibacterial assays; phenol content measured at approximately 1.7 mg/mL and flavonoid content at 0.46 mg/mL in standardized preparations.
- **Aqueous Decoction (Traditional)**: Leaves and bark are boiled in water and applied topically or used as a wash for wounds, skin infections, and parasitic infestations in Central American and Colombian folk medicine.
- **Topical Gel Formulation**: Experimental preparations using leaf extract fractions have been formulated into gels for [anti-inflammatory](/ingredients/condition/inflammation) and wound-care applications; no standardized concentration or clinical dose has been validated.
- **Seed and Root Preparations (Traditional)**: Powdered seeds have been used as rodenticide and insecticide in agricultural settings; root extracts demonstrated [antioxidant activity](/ingredients/condition/antioxidant) equivalent to ascorbic acid at 20.22 µg/mL.
- **Standardization Note**: No pharmacopoeial standardization, certified extract grades, or recommended daily intake values have been established for any G. sepium preparation intended for human consumption.

## Safety & Drug Interactions

Gliricidia sepium contains compounds with demonstrated rodenticidal and insecticidal toxicity, including alkaloids and rotenoid-related constituents in seeds and bark, and no formal toxicological studies establishing safe human oral doses have been published, making its internal use as a supplement potentially hazardous. Seeds and bark are considered toxic and should not be ingested; while leaf decoctions are used traditionally in some communities, the absence of systematic toxicity data, LD50 values in mammals, or genotoxicity assessments represents a critical safety data gap. No drug interaction studies have been conducted, but the flavonoid and tannin load theoretically warrants caution with anticoagulants (e.g., warfarin), antiparasitic pharmaceuticals, and iron supplementation, as polyphenols can alter absorption and [metabolism](/ingredients/condition/weight-management) of co-administered compounds via CYP450 modulation. Pregnant and lactating women should avoid any internal preparations given the uterotonic potential of saponins and the complete absence of reproductive safety data; topical use should similarly be approached with caution pending formal dermal sensitization testing.

## Scientific Research

The existing body of evidence for Gliricidia sepium is composed almost entirely of in vitro laboratory studies and traditional ethnobotanical documentation, with no published human clinical trials identified in peer-reviewed literature as of the most recent search. Anthelmintic studies using crude ethanolic and aqueous extracts have quantified LEI at IC50 22.44 mg/mL and IC99 65.44 mg/mL, and EHI at IC50 1.97 mg/mL, providing dose-response data but lacking validation in animal models or human subjects. Antibacterial investigations have measured inhibition zone diameters for multiple bacterial strains using disc diffusion methods, with ethanolic extracts consistently outperforming aqueous preparations, though minimum inhibitory concentration (MIC) values and sample sizes are inconsistently reported across studies. Overall, the scientific evidence base is preliminary and restricted to preclinical models, meaning efficacy and safety in humans remain unestablished and extrapolation from in vitro concentrations to oral or topical therapeutic doses is not currently supported.

## Historical & Cultural Context

Gliricidia sepium has been deeply embedded in Mesoamerican and Colombian agricultural and medicinal traditions for centuries, with indigenous communities cultivating it as a living fence, shade tree, and multipurpose medicinal plant long before European contact. In Mexico and Central America, it is commonly called 'mata ratón' (rat killer) or 'madrecacao,' reflecting its well-known toxicity to rodents and its use as a natural pesticide applied to grain stores and fields. Colombian folk medicine has historically employed root and bark decoctions as antiparasitic and wound-healing agents, with rotenoid-bearing fractions specifically associated with insecticidal and anthelmintic applications in the Andean foothills and Pacific lowlands. The plant's nitrogen-fixing symbiosis with Rhizobium bacteria made it integral to agroforestry systems across tropical Latin America, the Caribbean, and West Africa, where it also served as emergency livestock fodder and green manure, embedding it simultaneously in agricultural ecology and ethnopharmacology.

## Synergistic Combinations

In traditional Colombian antiparasitic protocols, Gliricidia sepium preparations are sometimes combined with other tannin-rich leguminous plants, where the additive effect of polyphenol-mediated membrane disruption and saponin-driven osmotic interference may enhance larval exsheathment inhibition beyond what either plant achieves alone. Quercetin, abundant in G. sepium extracts, is known to enhance the bioavailability of co-administered flavonoids through inhibition of efflux transporters (P-glycoprotein), suggesting potential synergy when combined with other polyphenol-rich botanicals such as green tea (Camellia sinensis) or moringa (Moringa oleifera) in formulated extracts. The plant's saponin fraction (soyasaponin I and III) may act as a natural adjuvant enhancing mucosal uptake of co-formulated bioactive compounds, a mechanism documented for soy-derived saponins in experimental delivery systems.

## Frequently Asked Questions

### What is gliricidia used for medicinally?

Gliricidia sepium is used in traditional Central American and Colombian medicine primarily as an antiparasitic, antibacterial, and wound-healing agent. Extracts from leaves, bark, and roots contain flavonoids, tannins, saponins, and alkaloids that have demonstrated larval exsheathment inhibition (IC50 22.44 mg/mL) and egg hatch inhibition (IC50 1.97 mg/mL) in vitro, supporting its ethnobotanical role as an anthelmintic. However, all evidence to date is preclinical, and no human clinical trials have confirmed therapeutic efficacy or safe dosing.

### Is gliricidia sepium toxic to humans?

Gliricidia sepium seeds and bark are considered toxic, particularly to rodents and insects, due to alkaloid and rotenoid-related compounds responsible for its common name 'mata ratón' (rat killer). No formal human oral toxicity studies, LD50 data for humans, or genotoxicity assessments have been published, meaning internal consumption—especially of seeds or bark—carries unquantified risk. Leaf decoctions are used topically in folk medicine with less reported toxicity, but caution is warranted and internal use should be avoided without medical supervision.

### What bioactive compounds are found in gliricidia leaves?

Gliricidia sepium leaves contain at least 18 identified flavonoid compounds, including quercetin-3-glucoside, luteolin-7-O-glucoside, kaempferol-3-O-rutinoside-7-O-rhamnoside, myricetin derivatives, and apigenin-di-C-dihexose-O-deoxyhexose, alongside tannins, saponins (soyasaponin I and III), phenolic acids, and alkaloids. Total phenol content in standardized extracts reaches approximately 1.7 mg/mL and total flavonoids approximately 0.46 mg/mL. These compounds collectively underpin the plant's antioxidant, antibacterial, and antiparasitic activities observed in laboratory studies.

### How is gliricidia prepared as a traditional remedy?

Traditional preparations of Gliricidia sepium vary by region and intended use; the most common method involves boiling fresh or dried leaves and bark in water to prepare a decoction applied topically to wounds, skin infections, and areas affected by parasites. In Colombian folk medicine, root decoctions have been used as antiparasitic washes, while powdered seeds have served as grain-store insecticides and rodenticides rather than human remedies. Modern research uses ethanolic, methanolic, and aqueous solvent extracts in laboratory settings, with gel formulations explored for topical anti-inflammatory applications, though none are commercially standardized.

### Does gliricidia have antioxidant properties?

Yes, Gliricidia sepium extracts demonstrate measurable antioxidant activity attributable to their flavonoid, tannin, and phenolic acid content. Root extracts showed antioxidant activity equivalent to ascorbic acid at a concentration of 20.22 µg/mL in ferric reducing power assays, and the combined polyphenol profile contributes to free-radical scavenging capacity. However, these findings are based solely on in vitro chemical assays, and whether oral consumption of the plant delivers meaningful antioxidant effects in living organisms has not been evaluated in human or animal pharmacokinetic studies.

### What does research show about gliricidia's effectiveness against parasitic worms?

In vitro studies demonstrate that gliricidia leaf extracts possess significant anthelmintic activity, with larval exsheathment inhibition (LEI) reaching an IC50 of 22.44 mg/mL and egg hatching inhibition (EHI) at 1.97 mg/mL. These results suggest meaningful antiparasitic potency against gastrointestinal helminths, though human clinical trials are limited and further research is needed to establish optimal dosing and efficacy in vivo. The bioactive compounds responsible—including alkaloids, flavonoids, and tannins—appear to work through multiple mechanisms to disrupt parasite reproduction and motility.

### Is gliricidia safe for children, and what age restrictions apply?

Safety data specifically addressing pediatric use of gliricidia is limited, and traditional use does not substitute for clinical evidence of safety in children. Given that gliricidia contains alkaloids and other bioactive compounds with potential systemic effects, consultation with a healthcare provider is essential before administering to children. Age-appropriate dosing and formulation considerations have not been well-established in medical literature.

### How does gliricidia compare to synthetic antiparasitic medications in terms of mechanism?

Gliricidia works through multiple phytochemical constituents (flavonoids, tannins, and alkaloids) that disrupt parasite egg hatching and larval development, whereas synthetic antiparasitics typically target single molecular pathways such as microtubule assembly or neuromuscular transmission. While gliricidia's polypharmacology may theoretically reduce resistance development, synthetic medications have undergone rigorous pharmacokinetic and efficacy testing in humans that gliricidia has not. Direct comparative clinical studies between gliricidia extracts and conventional treatments are lacking.

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