# Isovitexin

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/isovitexin
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-29
**Evidence Score:** 2 / 10
**Category:** Compound
**Also Known As:** Apigenin 6-C-glucoside, 6-C-glucosylapigenin, Vitexin 2'-O-rhamnoside, Saponaretin, Homo-orientin, IVX

## Overview

Isovitexin is a C-glycosylflavone (apigenin-6-C-glucoside) found in plants such as passion flower, pearl millet, and bamboo leaves. Its primary mechanisms include inhibition of the steroidogenic enzyme CYP17A1, suppression of [pro-inflammatory cytokine](/ingredients/condition/inflammation)s, and induction of apoptosis in cancer cell lines.

## Health Benefits

• Induces apoptosis in MCF-7 breast cancer cells at <10 nM through CYP17A1 inhibition (in vitro study).[1]
• Reduces inflammation and cytokine levels in GA-induced contact dermatitis mouse models, showing more effectiveness than dexamethasone in some measures (animal study).[2]
• Exhibits protective effects against DSS-induced colitis in mice by inhibiting specific [inflammatory pathway](/ingredients/condition/inflammation)s (animal study).[10]
• Targets β-cell protection and insulin signaling in preclinical diabetes models (in vitro study).[3]
• Modulates NF-κB pathway and reduces [T-cell](/ingredients/condition/immune-support) proliferation in inflammatory models (animal study).[2]

## Mechanism of Action

Isovitexin inhibits CYP17A1 (17α-hydroxylase/17,20-lyase), a cytochrome P450 enzyme critical in androgen and estrogen biosynthesis, triggering apoptosis in hormone-sensitive cancer cells at concentrations below 10 nM. It suppresses NF-κB signaling and reduces downstream pro-inflammatory mediators including TNF-α, IL-6, and IL-1β, accounting for its [anti-inflammatory](/ingredients/condition/inflammation) effects observed in contact dermatitis models. Additionally, isovitexin activates the Nrf2/HO-1 [antioxidant](/ingredients/condition/antioxidant) pathway and modulates MAPK cascades, contributing to its reported cytoprotective and [neuroprotective](/ingredients/condition/cognitive) actions.

## Clinical Summary

Current evidence for isovitexin is predominantly preclinical, derived from in vitro cell studies and rodent models, with no published randomized controlled trials in humans. In vitro data show induction of apoptosis in MCF-7 breast cancer cells at sub-10 nM concentrations via CYP17A1 inhibition. Animal studies using gallic acid-induced contact dermatitis mouse models demonstrate reductions in [inflammatory](/ingredients/condition/inflammation) cytokines that exceeded the efficacy of dexamethasone on certain measures, though direct translation to human outcomes remains unestablished. The absence of human pharmacokinetic and clinical efficacy data means definitive dosing recommendations and therapeutic claims cannot yet be made.

## Nutritional Profile

Isovitexin (apigenin-6-C-glucoside) is a C-glycosyl flavonoid with molecular formula C₂₁H₂₀O₁₀ (MW ~432.38 g/mol). It is not a macronutrient source but a bioactive polyphenolic compound found naturally in mung bean (Vigna radiata) seed coats (~0.5–2 mg/g dry weight), passion fruit (Passiflora incarnata) leaves (~1–5 mg/g), bamboo leaves (~0.3–1.5 mg/g), hawthorn (Crataegus spp.) fruit, and rice hull extracts. As a C-glycoside, isovitexin is more resistant to hydrolysis in the GI tract compared to O-glycosides, resulting in slower but more sustained absorption; oral bioavailability is estimated to be low-to-moderate (~5–15%), improved modestly by co-administration with lipids or piperine. It possesses documented [antioxidant](/ingredients/condition/antioxidant) (ORAC and DPPH scavenging), [anti-inflammatory](/ingredients/condition/inflammation) (NF-κB and MAPK pathway inhibition), and pro-apoptotic activities. Typical research dosages in animal models range from 10–100 mg/kg body weight. No significant vitamin or mineral content as an isolated compound.

## Dosage & Preparation

No clinically studied dosages in humans are available. Preclinical studies used concentrations up to 100 μM in vitro and dose-dependent administrations in vivo without standardized mg/kg. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

No human clinical safety trials for isovitexin have been published, making a comprehensive adverse effect profile unavailable at this time. Because isovitexin inhibits CYP17A1, it may theoretically interact with hormonal therapies, corticosteroids, or other drugs metabolized via cytochrome P450 enzymes, warranting caution in those populations. Its [anti-inflammatory](/ingredients/condition/inflammation) activity may additively or synergistically interact with NSAIDs, immunosuppressants, or corticosteroids, potentially altering their efficacy or increasing side effect risk. Pregnant or breastfeeding individuals and those with hormone-sensitive conditions should avoid supplementation until human safety data are available.

## Scientific Research

No human clinical trials or meta-analyses on isovitexin were identified. Evidence is limited to preclinical in vitro, in vivo animal, and computational studies, indicating preliminary findings without standardized human data.

## Historical & Cultural Context

Isovitexin occurs in plants like Ginkgo biloba and Vitex species, which are used in traditional Chinese medicine for [inflammation](/ingredients/condition/inflammation). However, specific traditional uses of isovitexin alone are not documented.

## Synergistic Combinations

Isovitexin pairs well with (1) **Vitexin** (apigenin-8-C-glucoside), its positional isomer, as the two co-occur naturally in Passiflora and bamboo leaf extracts and show additive [antioxidant](/ingredients/condition/antioxidant) and anti-inflammatory effects via complementary ROS-scavenging mechanisms; (2) **Piperine** (5–10 mg), which inhibits hepatic glucuronidation and intestinal P-glycoprotein efflux, thereby significantly enhancing isovitexin's oral bioavailability; (3) **Curcumin** (200–500 mg), which synergistically suppresses NF-κB signaling—curcumin targets IKKβ while isovitexin inhibits upstream MAPK/ERK phosphorylation, producing a more complete blockade of [pro-inflammatory cytokine](/ingredients/condition/inflammation) cascades (TNF-α, IL-6, IL-1β); (4) **EGCG (epigallocatechin gallate)** (100–200 mg from green tea), which complements isovitexin's CYP17A1 inhibition with its own aromatase (CYP19) inhibitory activity, potentially offering a broader anti-proliferative profile in hormone-sensitive cancers; and (5) **Quercetin** (250–500 mg), which shares overlapping but non-identical antioxidant pathways (Nrf2/ARE activation) and can stabilize isovitexin against oxidative degradation in formulation.

## Frequently Asked Questions

### What foods contain isovitexin naturally?

Isovitexin is found in notable concentrations in passion flower (Passiflora incarnata), bamboo leaves, pearl millet (Pennisetum glaucum), and certain grasses and cereal crops. It is also present in smaller amounts in kamut wheat and some herbs used in traditional medicine. Bamboo leaf extracts are among the richest commercially available sources and are commonly used in food-grade antioxidant applications in Asia.

### Can isovitexin kill cancer cells?

In vitro studies demonstrate that isovitexin induces apoptosis in MCF-7 human breast cancer cells at concentrations below 10 nM, primarily by inhibiting the steroidogenic enzyme CYP17A1, which disrupts estrogen synthesis needed for tumor cell proliferation. Similar pro-apoptotic activity has been reported in other cancer cell lines including hepatocellular and cervical cancer cells in laboratory settings. However, no human clinical trials have confirmed anticancer efficacy, and these findings should not be interpreted as evidence that isovitexin treats or prevents cancer in people.

### How does isovitexin compare to dexamethasone for inflammation?

In a gallic acid-induced contact dermatitis mouse model, isovitexin outperformed dexamethasone on certain inflammatory measures, including reductions in specific cytokine levels such as TNF-α and IL-1β at the doses tested. Dexamethasone is a potent synthetic glucocorticoid, so these findings are notable, but they are limited to one animal model and specific outcome measures. Direct human comparisons have not been conducted, and the clinical relevance of this superiority on select cytokine endpoints remains uncertain.

### Is isovitexin the same as vitexin?

Isovitexin and vitexin are structural isomers both classified as C-glycosylflavones with the same molecular formula (C21H20O10), but they differ in the attachment position of the glucose moiety on the apigenin backbone. Vitexin carries the glucose at the C-8 position, while isovitexin (also called homovitexin or apigenin-6-C-glucoside) carries it at the C-6 position. This positional difference affects their pharmacokinetics, receptor binding affinities, and biological activities, meaning research findings on one compound do not automatically apply to the other.

### What is the recommended dosage of isovitexin?

There is currently no established human dosage for isovitexin as an isolated supplement, since no clinical trials have defined safe and effective dose ranges in people. Effective concentrations in in vitro studies (sub-10 nM for CYP17A1 inhibition) do not directly translate to oral dosing due to unknown bioavailability, first-pass metabolism, and tissue distribution in humans. Supplements containing passion flower or bamboo leaf extract provide isovitexin as part of a complex mixture, but standardized isovitexin content and clinically validated dosing guidelines do not yet exist.

### What does the research show about isovitexin's effectiveness for inflammatory bowel conditions?

Animal studies demonstrate that isovitexin provides protective effects against DSS-induced colitis in mice by inhibiting specific inflammatory pathways, suggesting potential benefit for inflammatory bowel disease. However, current evidence is limited to preclinical models; human clinical trials are needed to establish efficacy and safety in actual patients with inflammatory bowel conditions. The compound's ability to reduce inflammatory cytokines in animal models is promising but does not yet confirm clinical effectiveness.

### Is isovitexin safe to take alongside common medications like statins or blood thinners?

There is insufficient human data on drug interactions with isovitexin; most interaction research remains theoretical or based on in vitro studies. If you are taking prescription medications such as statins, anticoagulants, or CYP17A1-related drugs, consult your healthcare provider before adding isovitexin, as the compound may interact through enzymatic pathways. No formal interaction studies have been published in clinical populations, making safety guidance preliminary.

### Who would benefit most from isovitexin supplementation based on current research?

Current evidence suggests potential benefit for individuals with chronic inflammatory conditions, though human studies are lacking; animal models show promise for contact dermatitis and colitis. People interested in apoptosis-inducing compounds for cellular health may consider isovitexin, but efficacy in humans remains unproven. Anyone considering isovitexin for specific health conditions should consult a healthcare provider, as all supporting data comes from laboratory and animal studies rather than clinical trials.

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