# Menthone

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/menthone
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-30
**Evidence Score:** 2 / 10
**Category:** Compound
**Also Known As:** (-)-menthone, L-menthone, p-menthan-3-one, 2-isopropyl-5-methylcyclohexanone, mint ketone, peppermint ketone, 3-menthone

## Overview

Menthone is a naturally occurring cyclic monoterpene ketone found predominantly in peppermint (Mentha piperita) and pennyroyal oils, comprising up to 20–30% of peppermint essential oil composition. It exerts its primary biological effects through interactions with TRPM8 cold receptors and inhibition of [acetylcholine](/ingredients/condition/cognitive)sterase, though no human clinical trials have confirmed therapeutic benefits.

## Health Benefits

• No specific health benefits have been demonstrated in human studies, as no clinical trials or meta-analyses have been identified.

## Mechanism of Action

Menthone acts as a partial agonist at TRPM8 (transient receptor potential melastatin 8) cold-sensing ion channels, though with lower potency than its structural analog menthol, producing mild cooling and analgesic-adjacent sensory effects. In vitro studies suggest menthone inhibits [acetylcholine](/ingredients/condition/cognitive)sterase activity, potentially modulating cholinergic neurotransmission. Additionally, menthone has demonstrated concentration-dependent inhibition of cytochrome P450 enzymes, particularly CYP2A6 and CYP2B6, in cell-based assays, which may underlie observed antifungal and [antimicrobial](/ingredients/condition/immune-support) properties against organisms such as Candida albicans and Staphylococcus aureus.

## Clinical Summary

No published randomized controlled trials or meta-analyses have specifically evaluated menthone as an isolated compound in human subjects, making definitive clinical conclusions impossible. The existing evidence base consists entirely of in vitro cell culture studies and animal model experiments, which cannot be directly extrapolated to human therapeutic outcomes. Rodent studies have examined menthone's neurotoxic potential at high doses, with pennyroyal oil (a menthone-rich source) associated with documented hepatotoxicity cases in humans following ingestion of large quantities. The overall evidence for any health benefit of isolated menthone remains preclinical and insufficient to support supplemental use.

## Nutritional Profile

Menthone (C₁₀H₁₈O, molecular weight 154.25 g/mol) is a monoterpene ketone, not a nutritional compound per se, and thus lacks a conventional nutritional profile of macronutrients, vitamins, or minerals. Key details: • It is a major constituent of several essential oils, primarily cornmint (Mentha arvensis) oil (20–30%), pennyroyal (Mentha pulegium) oil (10–30%), and to a lesser extent peppermint (Mentha × piperita) oil (14–32% in some chemotypes, though menthol typically dominates). • Exists as two enantiomers: (−)-menthone (more common in peppermint) and (+)-menthone (isomenthone is a related diastereomer). • Caloric contribution is negligible at levels encountered in food flavoring (typically 0.1–5 mg per serving in flavored foods/beverages). • Contains no protein, carbohydrates, fat, fiber, vitamins, or minerals. • As a lipophilic monoterpenoid (log P ~2.8), it is readily absorbed through oral and dermal routes; oral bioavailability is presumed to be high based on rapid absorption kinetics observed in animal models. • Hepatic [metabolism](/ingredients/condition/weight-management) proceeds via reduction to menthol and hydroxylation, followed by glucuronidation and urinary excretion. • Bioactive concentration in essential oil applications: when present in peppermint oil supplements (typical dose 0.2–0.4 mL per enteric-coated capsule), menthone content ranges from approximately 28–80 mg per capsule depending on chemotype. • No significant [antioxidant](/ingredients/condition/antioxidant) capacity (ORAC values not established); unlike menthol, menthone does not activate TRPM8 cold receptors appreciably but may modestly interact with TRPA1 channels. • ADI (Acceptable Daily Intake) set by FEMA GRAS status for flavoring use; JECFA has evaluated it as part of the mint-derived flavoring group with no safety concerns at typical dietary exposure levels (estimated dietary exposure ~0.02–0.1 mg/kg body weight/day in Western diets). • No micronutrient cofactor roles identified.

## Dosage & Preparation

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

## Safety & Drug Interactions

Pennyroyal oil, which contains high concentrations of menthone alongside pulegone, has caused severe hepatotoxicity, nephrotoxicity, and fatalities in humans who ingested it as an abortifacient, and is considered unsafe for oral consumption. Menthone alone at high doses has demonstrated neurotoxicity and convulsant potential in animal studies, raising concerns about concentrated supplemental forms. Due to menthone's inhibition of CYP2A6 and CYP2B6 enzymes in vitro, potential interactions with drugs metabolized by these pathways — including nicotine, efavirenz, and cyclophosphamide — cannot be excluded. Menthone-containing preparations are contraindicated during pregnancy due to the abortifacient history of pennyroyal and absence of safety data in pregnant populations.

## Scientific Research

There are no human clinical trials, RCTs, or meta-analyses available for menthone. As such, no PubMed PMIDs or specific study details are provided in the research dossier.

## Historical & Cultural Context

There are no documented historical or traditional medicinal uses of menthone in specific cultural systems according to the research provided.

## Synergistic Combinations

Menthol, peppermint oil, eucalyptus oil, camphor, spearmint oil

## Frequently Asked Questions

### What is menthone found in naturally?

Menthone is found predominantly in peppermint (Mentha piperita) oil at concentrations of roughly 20–30%, and at even higher concentrations (up to 40–55%) in pennyroyal oil (Mentha pulegium). It also occurs in smaller amounts in spearmint, geranium, and certain Pelargonium species essential oils.

### Is menthone the same as menthol?

Menthone and menthol are distinct but structurally related cyclic monoterpenes; menthol is an alcohol while menthone is a ketone, differing by the oxidation state of one carbon. Menthol is a stronger TRPM8 agonist and produces a more pronounced cooling sensation, whereas menthone has weaker receptor binding affinity at the same site. Menthol is also more extensively studied in humans and has established safety data that does not automatically transfer to menthone.

### Does menthone have any proven health benefits?

As of current published literature, no human clinical trials have demonstrated health benefits for isolated menthone. In vitro studies have identified antimicrobial activity against Candida albicans and Staphylococcus aureus, and rodent models have shown modest anti-inflammatory effects, but none of these findings have been validated in human subjects. Consumers should not assume in vitro antimicrobial data translates to clinical efficacy.

### Is menthone safe to consume as a supplement?

Isolated menthone has no established safe dosage range for human supplementation, and its safety profile is poorly characterized in clinical settings. High-dose menthone demonstrated neurotoxicity and convulsant effects in rodent studies, and the menthone-rich pennyroyal oil has caused fatal hepatotoxicity in human case reports following oral ingestion. Until controlled human safety studies exist, supplemental use of concentrated menthone is not advisable.

### Can menthone interact with medications?

In vitro data suggest menthone inhibits CYP2A6 and CYP2B6 hepatic enzymes, which are responsible for metabolizing drugs including nicotine, efavirenz, ifosfamide, and cyclophosphamide, potentially altering their plasma concentrations. These interactions have not been confirmed in human pharmacokinetic studies, so the clinical significance remains unknown. Individuals taking medications with narrow therapeutic windows metabolized by CYP2A6 or CYP2B6 should exercise caution and consult a pharmacist before using menthone-containing products.

### What is the difference between menthone and peppermint oil?

Menthone is a single active compound found within peppermint oil, whereas peppermint oil is a complex mixture of many volatile compounds including menthone, menthol, and others. Peppermint oil typically contains 10-30% menthone by composition, making menthone one of several bioactive constituents rather than the primary active ingredient. If you're seeking the specific effects of menthone alone, a purified extract would differ significantly from whole peppermint oil in both composition and potential effects.

### Who should avoid menthone supplements?

Individuals with a known sensitivity or allergy to mint-derived compounds should avoid menthone supplements. Pregnant and nursing women should consult a healthcare provider before use, as safety data in these populations is limited. People with certain medical conditions affecting the stomach or esophagus should also seek professional guidance, as menthone is a volatile compound that may cause irritation in sensitive individuals.

### How is menthone absorbed and does food affect its absorption?

Menthone is a volatile, lipophilic compound that is absorbed through the gastrointestinal tract, with absorption likely enhanced by the presence of dietary fats due to its oil-soluble nature. However, specific bioavailability studies on menthone in humans have not been identified, making it difficult to quantify how food timing or composition optimally affects its uptake. Taking menthone-containing supplements with a meal containing fat may theoretically improve absorption, though this has not been clinically confirmed.

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