# Nomilin

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/nomilin
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-20
**Evidence Score:** 2 / 10
**Category:** Compound
**Also Known As:** (4α,5α,9β,10α,13α)-4,10-dihydroxy-2,16-dioxo-5,9:13,17-diepoxytirucalla-7,14,20,22-tetraen-21,23-olide, 17β-hydroxylimonin, Limonin 17β-hydroxy derivative, Citrus limonoid, Grapefruit seed limonoid, Nomiline, CAS 1063-77-0

## Overview

Nomilin is a limonoid triterpene compound found primarily in citrus fruits, particularly in the seeds and juice of oranges and lemons. It exerts its biological effects largely through modulation of nuclear factor-kappa B ([NF-κB](/ingredients/condition/inflammation)) signaling, activation of Nrf2-mediated [antioxidant](/ingredients/condition/antioxidant) pathways, and interference with tumor cell proliferation cascades.

## Health Benefits

• Exhibits [anti-inflammatory](/ingredients/condition/inflammation) properties, as demonstrated in preclinical models.
• Acts as an [antioxidant](/ingredients/condition/antioxidant), based on in vitro studies.
• Shows potential as an anti-obesity agent in animal models.
• Demonstrates hypoglycemic effects in preclinical research.
• Functions as an antineoplastic agent, according to in vitro and animal studies.

## Mechanism of Action

Nomilin suppresses inflammatory signaling by inhibiting NF-κB activation, thereby reducing downstream production of [pro-inflammatory cytokine](/ingredients/condition/inflammation)s such as TNF-α, IL-6, and IL-1β. It simultaneously activates the Nrf2/Keap1 pathway, upregulating [phase II detox](/ingredients/condition/detox)ification enzymes including heme oxygenase-1 (HO-1) and NAD(P)H quinone oxidoreductase 1 (NQO1), which confer cellular [antioxidant protection](/ingredients/condition/antioxidant). Its antineoplastic activity involves induction of apoptosis via modulation of Bcl-2 family proteins and inhibition of MAPK/ERK signaling pathways, and its hypoglycemic effects are associated with improved [insulin sensitivity](/ingredients/condition/weight-management) and inhibition of α-glucosidase enzyme activity.

## Clinical Summary

The evidence base for nomilin is currently limited almost entirely to in vitro cell studies and in vivo rodent models, with no published randomized controlled trials in humans as of 2024. Animal studies using doses ranging from approximately 10 to 50 mg/kg body weight have demonstrated reductions in fasting [blood glucose](/ingredients/condition/weight-management), decreases in adipose tissue accumulation, and suppression of tumor growth in xenograft models. One preclinical anti-obesity study in high-fat diet-induced obese mice showed significant reductions in body weight and improvement in lipid profiles at 20 mg/kg. The overall evidence is promising but considered preliminary, and extrapolation to human dosing and efficacy requires considerable caution until clinical trials are conducted.

## Nutritional Profile

Nomilin is a tetracyclic triterpenoid limonoid compound, not a conventional macronutrient or micronutrient source, and thus has no meaningful protein, fat, carbohydrate, fiber, vitamin, or mineral content in nutritional terms. It is found predominantly in citrus seeds and peel at concentrations ranging approximately 0.1–2.5 mg/g dry weight depending on species (highest in Citrus limon and Citrus aurantium). As a bioactive compound, its primary significance lies in its limonoid skeleton structure, which confers its biological activity. Oral bioavailability is considered moderate but limited by poor aqueous solubility; nomilin undergoes hepatic [metabolism](/ingredients/condition/weight-management) and is partially converted to nomilin glucoside in the intestinal tract, which may serve as a bioavailable reservoir form. Absorption is enhanced in the presence of dietary fats due to its lipophilic character. Typical experimental doses in animal studies range from 25–100 mg/kg body weight, with no established human dietary reference intake.

## Dosage & Preparation

No clinically studied dosage ranges or forms are available for nomilin due to the lack of human trials. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

No formal human clinical safety trials for isolated nomilin supplementation have been published, making it difficult to establish a definitive safety profile or tolerable upper intake level. In animal studies, nomilin has been generally well tolerated at research doses, but high concentrations of citrus limonoids as a class have demonstrated potential hepatotoxic effects in some rodent models, warranting caution. Nomilin may theoretically interact with cytochrome P450 enzymes, particularly CYP3A4, similar to other citrus-derived compounds, potentially altering the [metabolism](/ingredients/condition/weight-management) of drugs such as statins, immunosuppressants, and calcium channel blockers. Pregnant or breastfeeding individuals and those with liver conditions should avoid isolated nomilin supplements until human safety data is available.

## Scientific Research

There are no human clinical trials or meta-analyses available for nomilin. The research primarily consists of preclinical studies conducted in vitro and in animal models.

## Historical & Cultural Context

There is no information available regarding the historical or traditional medicinal uses of nomilin in any medical systems such as Ayurveda or Traditional Chinese Medicine.

## Synergistic Combinations

Nomilin pairs well with hesperidin (a citrus flavanone), as both compounds share complementary NF-κB inhibitory and Nrf2-activating pathways, producing additive [anti-inflammatory](/ingredients/condition/inflammation) and [antioxidant](/ingredients/condition/antioxidant) effects while hesperidin's better aqueous solubility may aid co-formulation stability. Quercetin enhances nomilin's antineoplastic activity through synergistic modulation of apoptotic signaling (specifically Bcl-2/Bax ratio and caspase-3 activation) and additive inhibition of PI3K/Akt pathways observed in shared in vitro cancer models. Berberine complements nomilin's hypoglycemic and anti-obesity mechanisms through distinct but additive actions — nomilin suppresses hepatic lipogenesis via SREBP-1c modulation while berberine activates AMPK, together improving [insulin sensitivity](/ingredients/condition/weight-management) across multiple metabolic nodes. Additionally, piperine (from black pepper) at approximately 5–20 mg doses may enhance nomilin's oral bioavailability by inhibiting CYP3A4-mediated first-pass metabolism and P-glycoprotein efflux, a mechanism well-documented for co-administration with similarly lipophilic bioactives.

## Frequently Asked Questions

### What foods are highest in nomilin?

Nomilin is found in highest concentrations in the seeds and albedo (white pith) of citrus fruits, particularly navel oranges, lemons, and grapefruits. Citrus seed oils and cold-pressed citrus juices retain more nomilin than pasteurized commercial products, as the compound degrades with prolonged heat exposure. Concentrations in whole citrus seeds can reach several hundred parts per million, making seeds a far richer source than juice alone.

### Can nomilin help with weight loss?

Nomilin has shown anti-obesity effects in high-fat diet-fed mouse models, where oral administration at approximately 20 mg/kg reduced body weight gain, lowered serum triglycerides, and decreased LDL cholesterol. Its proposed mechanism involves downregulation of adipogenic transcription factors such as PPARγ and C/EBPα, reducing fat cell differentiation. However, no human clinical trials have confirmed these effects, so nomilin cannot currently be recommended as a proven weight loss intervention.

### Is nomilin the same as limonin?

Nomilin and limonin are related but distinct limonoid compounds found in citrus fruits, sharing a similar tetracyclic triterpenoid backbone but differing in their functional group arrangements. Limonin is formed from nomilin's precursor nomilinic acid and is typically present in higher concentrations in mature citrus juice. Both exhibit overlapping biological activities including anti-inflammatory and antineoplastic properties, but nomilin has shown comparatively stronger apoptosis-inducing activity in certain cancer cell line studies.

### Does nomilin have anticancer properties?

Preclinical research indicates nomilin induces apoptosis in several cancer cell lines, including colon, breast, and neuroblastoma cells, by regulating Bcl-2/Bax ratios and activating caspase-3 and caspase-9 pathways. In mouse xenograft tumor models, nomilin administration has been shown to significantly reduce tumor volume and weight. These findings are based entirely on cell culture and animal research, and no human oncology trials using nomilin have been completed, so it should not be considered a cancer treatment.

### How does nomilin lower blood sugar?

Nomilin's hypoglycemic activity is attributed to at least two mechanisms: inhibition of α-glucosidase, the intestinal enzyme responsible for breaking down dietary carbohydrates into absorbable glucose, and enhancement of peripheral insulin sensitivity in target tissues. In streptozotocin-induced diabetic rodent models, nomilin supplementation reduced fasting blood glucose and improved glucose tolerance test outcomes compared to controls. These effects are considered preclinical findings, and nomilin has not been evaluated in human diabetes management trials.

### What does current clinical research show about nomilin's effectiveness in humans?

Most nomilin research has been conducted in vitro (test tube) or in animal models, with limited human clinical trials to date. While preclinical studies demonstrate promising anti-inflammatory, antioxidant, and hypoglycemic properties, the evidence in humans remains preliminary and requires further investigation before strong clinical recommendations can be made. The gap between animal and human evidence means more rigorous clinical trials are needed to establish therapeutic efficacy and safe dosing in people.

### Is nomilin safe to take alongside blood sugar or blood pressure medications?

While nomilin shows hypoglycemic potential in preclinical studies, there is insufficient clinical data on its interactions with diabetes or hypertension medications in humans. Anyone taking medications for blood glucose or blood pressure control should consult their healthcare provider before supplementing with nomilin, as concurrent use could theoretically potentiate drug effects. This caution is especially important given nomilin's demonstrated effects on glucose metabolism in animal models.

### Who is most likely to benefit from nomilin supplementation based on current research?

Based on preclinical evidence, nomilin may be of interest to individuals concerned with metabolic health, inflammation, or oxidative stress, though human evidence supporting its use remains limited. People consuming low amounts of citrus fruits—the primary dietary source of nomilin—might theoretically benefit most, but this remains speculative without clinical data. Currently, nomilin should be considered an exploratory supplement requiring more research rather than a proven intervention for any specific population.

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