# Maclura pomifera (Osage Orange)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/maclura-pomifera
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-01
**Evidence Score:** 2 / 10
**Category:** Herb
**Also Known As:** Bois d'Arc, Hedge Apple, Horse Apple, Mock Orange, Bodark, Bow Wood, Yellow Wood, Bodock

## Overview

Maclura pomifera, commonly called Osage orange, contains the isoflavone pomiferin as its primary bioactive compound, which demonstrates potent [antioxidant activity](/ingredients/condition/antioxidant) in laboratory assays. Research remains largely preclinical, with pomiferin showing free-radical scavenging capacity comparable to vitamins C and E in FRAP and β-CLAMS chemical models.

## Health Benefits

["\u2022 May provide [antioxidant](/ingredients/condition/antioxidant) effects, based on *in vitro* studies where the isoflavone pomiferin demonstrated strong activity comparable to vitamins C and E in chemical assays (FRAP and \u03b2-CLAMS).[3]", "\u2022 May exhibit [antimicrobial](/ingredients/condition/immune-support) properties, based on *in vitro* evidence showing that leaf extracts can inhibit the growth of Gram-positive bacteria such as *Listeria monocytogenes*.[2]", "\u2022 No other specific health benefits have been demonstrated, as research is limited to laboratory settings.[2][3]", "\u2022 The active compounds osajin and pomiferin have been isolated from the fruit, but their effects in the human body are unknown.[1][3]", "\u2022 The fruit itself is considered non-edible and is not a source of direct nutritional benefits through consumption.[1][4]"]

## Mechanism of Action

Pomiferin, the dominant isoflavone in Maclura pomifera fruit, exerts antioxidant effects by donating hydrogen atoms to neutralize free radicals and chelating transition metal ions that catalyze oxidative chain reactions, as measured in FRAP (ferric reducing antioxidant power) and β-carotene linoleate model system assays. Its polyphenolic hydroxyl groups facilitate electron transfer, inhibiting [lipid peroxidation](/ingredients/condition/antioxidant) cascades at the membrane level. [Antimicrobial](/ingredients/condition/immune-support) activity is hypothesized to involve disruption of microbial cell membrane integrity and inhibition of bacterial enzyme systems, though specific receptor or enzyme targets have not been fully characterized in peer-reviewed literature.

## Clinical Summary

Available evidence for Maclura pomifera is entirely preclinical, derived from in vitro cell-free and cell-based assays rather than human clinical trials. Chemical [antioxidant](/ingredients/condition/antioxidant) studies using FRAP and β-CLAMS models report pomiferin activity comparable to reference antioxidants vitamins C and E, though these assays do not predict bioavailability or in vivo efficacy. [Antimicrobial](/ingredients/condition/immune-support) studies have demonstrated inhibitory effects against select bacterial strains in laboratory settings, but no standardized minimum inhibitory concentration data from large, replicated studies exist. No randomized controlled trials, pharmacokinetic studies, or dose-finding studies in humans have been published, making evidence quality very low by clinical standards.

## Nutritional Profile

{"macronutrients": {"fiber": "Approximately 2.5 grams per 100 grams", "protein": "Approximately 1 gram per 100 grams"}, "micronutrients": {"vitamin_C": "Approximately 6 mg per 100 grams", "calcium": "Approximately 25 mg per 100 grams", "potassium": "Approximately 200 mg per 100 grams"}, "bioactive_compounds": {"isoflavones": {"pomiferin": "Present, specific concentration not well-documented"}, "flavonoids": {"osajin": "Present, specific concentration not well-documented"}}, "bioavailability_notes": "The bioavailability of these compounds can vary based on preparation and individual digestive factors. Isoflavones like pomiferin may have limited absorption in the human body without proper preparation."}

## Dosage & Preparation

No clinically studied dosage ranges are available, as human trials are absent. In vitro [antioxidant](/ingredients/condition/antioxidant) studies used extracts standardized to 25.7% osajin and 36.2% pomiferin, but these concentrations do not translate to a human dose. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

No formal human safety studies, toxicology profiles, or established tolerable upper intake levels exist for Maclura pomifera extracts or isolated pomiferin. The milky latex sap of the fruit is a known skin irritant and has caused contact dermatitis upon direct exposure, suggesting topical preparations warrant caution. Because pomiferin is a phytoestrogenic isoflavone structurally related to other flavonoids, theoretical interactions with estrogen-sensitive conditions, hormone therapies, and anticoagulants such as warfarin cannot be excluded, though no direct drug interaction data are published. Pregnant and breastfeeding individuals should avoid supplemental use due to the complete absence of safety data in these populations.

## Scientific Research

No human clinical trials, randomized controlled trials (RCTs), or meta-analyses for Maclura pomifera were identified in the source material. Current evidence is limited to in vitro laboratory studies on its chemical constituents, and no PMIDs for human trials are available.[2][3]

## Historical & Cultural Context

Osage orange does not have a documented history of use in traditional medicine. Native American tribes, including the Osage, highly valued its strong, flexible wood (known as Bois d’Arc) for making bows, rather than using the fruit for medicinal purposes.[1][6]

## Synergistic Combinations

No synergistic ingredients are documented in the provided research.

## Frequently Asked Questions

### What is pomiferin and why does it matter in Osage orange?

Pomiferin is a prenylated isoflavone found in high concentrations in Maclura pomifera fruit pulp and is considered the plant's primary bioactive compound. In vitro assays have measured its free-radical scavenging capacity as comparable to vitamins C and E, making it the main focus of antioxidant research on this plant.

### Is Osage orange safe to eat or take as a supplement?

The fruit's flesh is technically non-toxic but is considered inedible by most humans due to its bitter taste and thick, resinous latex. No standardized supplement dosage or formal human safety data exists; the latex sap can cause contact dermatitis, and individuals on hormone therapies or blood thinners should consult a physician before using any extract.

### Does Osage orange have proven antimicrobial effects in humans?

No human clinical evidence supports antimicrobial claims for Maclura pomifera. Available data come exclusively from in vitro studies showing inhibitory activity against certain bacterial strains in laboratory conditions, and these findings have not been validated in animal models or human trials.

### How does Osage orange compare to other antioxidant supplements like vitamin C?

In chemical assays such as FRAP and the β-carotene linoleate model system, pomiferin from Osage orange exhibited antioxidant activity quantitatively comparable to vitamins C and E. However, these are cell-free chemical models and do not account for oral bioavailability, metabolism, or tissue delivery, so direct comparison to established supplements in a clinical context is not currently supported.

### Can Osage orange interact with medications or hormonal conditions?

Pomiferin is a phytoestrogenic isoflavone, which raises theoretical concern for interactions with estrogen-sensitive conditions such as hormone receptor-positive cancers and with exogenous hormone therapies. No peer-reviewed pharmacokinetic or drug interaction studies have been conducted, so caution is advised when combining Maclura pomifera extracts with anticoagulants, hormone medications, or immunosuppressants.

### What is the difference between Osage orange fruit extract and leaf extract supplements?

Osage orange leaf extracts have demonstrated antimicrobial activity against bacteria like *Listeria monocytogenes* in laboratory studies, while fruit extracts are primarily studied for antioxidant potential from the isoflavone pomiferin. The bioactive compound profiles differ between plant parts, meaning leaf and fruit supplements may have different effects and potencies. Most available research has focused on either leaf or fruit preparations separately, so direct clinical comparison data is limited.

### Is there clinical evidence that Osage orange supplements work in humans, or only in test tubes?

Current evidence for Osage orange is primarily limited to *in vitro* (test tube) and *in vivo* animal studies; robust human clinical trials are lacking. While pomiferin showed strong antioxidant activity in chemical assays (FRAP and β-CLAMS methods), these laboratory results do not guarantee the same effects occur when taken as a supplement in the human body. More rigorous human studies are needed to confirm whether Osage orange delivers meaningful health benefits beyond what laboratory testing suggests.

### Can I get the benefits of Osage orange from eating the whole fruit, or do I need a supplement?

Osage orange fruit is largely inedible due to its unpalatable taste and fibrous texture, making whole fruit consumption impractical for obtaining pomiferin and other bioactive compounds. Supplement forms (extracts, powders, or standardized preparations) allow concentrated delivery of active constituents that would be difficult to obtain from the fruit itself. Currently, supplemental forms are the primary way people consume Osage orange for potential health benefits, as traditional food use is extremely limited.

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