# Tropical Nutmeg (Myristica fragrans)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/tropical-nutmeg
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-25
**Evidence Score:** 2 / 10
**Category:** Nut
**Also Known As:** Myristica fragrans, Common Nutmeg, True Nutmeg, Jaiphal, Rou Dou Kou, Pala, Muscade, Nux Moschata

## Overview

Myristica fragrans, commonly called nutmeg, contains bioactive compounds including myristicin, elemicin, and safrole that drive its [antimicrobial](/ingredients/condition/immune-support) and [anti-inflammatory](/ingredients/condition/inflammation) properties. These lignan and phenylpropanoid compounds inhibit microbial replication and modulate cytokine signaling pathways, making it a subject of growing pharmacological interest.

## Health Benefits

• Antiparasitic activity: Mouse study showed 80-81% reduction in Cryptosporidium parvum oocyst shedding at 500 mg/kg (preliminary evidence)
• [Anti-inflammatory](/ingredients/condition/inflammation) effects: Reduces cytokines (IFN-γ, IL-4) and IgG levels in infection models (preliminary evidence)
• Antifungal properties: Isolated elemicin showed activity against Candida tropicalis and Aspergillus flavus (in-vitro evidence)
• Potential anticancer activity: Myristicin demonstrated cytotoxicity against human rhabdomyosarcoma cells (in-vitro evidence)
• [Antioxidant](/ingredients/condition/antioxidant) and hypoglycemic effects: Demonstrated in preclinical models through lignan and terpenoid activity (preliminary evidence)

## Mechanism of Action

Myristicin, a phenylpropanoid in Myristica fragrans, inhibits monoamine oxidase (MAO) and modulates NF-κB signaling to suppress [pro-inflammatory cytokine](/ingredients/condition/inflammation) production including IFN-γ and IL-4. Elemicin demonstrates antifungal activity by disrupting fungal cell membrane integrity through inhibition of ergosterol biosynthesis. Safrole and its derivatives interfere with parasitic oocyst wall formation in Cryptosporidium parvum, contributing to the observed 80–81% reduction in oocyst shedding at 500 mg/kg doses in mouse models.

## Clinical Summary

Current evidence for Myristica fragrans is predominantly preclinical, derived from in vitro assays and rodent models rather than human clinical trials. A mouse study demonstrated an 80–81% reduction in Cryptosporidium parvum oocyst shedding at 500 mg/kg, representing a notable antiparasitic signal but not directly translatable to human dosing. [Anti-inflammatory](/ingredients/condition/inflammation) outcomes, specifically reductions in IFN-γ, IL-4, and IgG levels, have been observed in infection-model animal studies, with no randomized controlled trials in humans confirming these effects. The antifungal properties of isolated elemicin show promise in vitro, but clinical efficacy and optimal dosing in humans remain unestablished.

## Nutritional Profile

Tropical Nutmeg (Myristica fragrans) seed (per 100g dried, ground): Macronutrients: Calories ~525 kcal, Total fat ~36g (saturated fat ~25g, primarily myristic acid/tetradecanoic acid 60-80% of fatty acid composition), Carbohydrates ~49g (dietary fiber ~21g, net carbs ~28g), Protein ~6g. Key Micronutrients: Manganese ~2.9mg (145% DV) - one of the richest dietary sources; Copper ~1.0mg (~111% DV); Magnesium ~183mg (~46% DV); Phosphorus ~213mg (~21% DV); Zinc ~2.2mg (~20% DV); Iron ~3.0mg (~17% DV); Calcium ~184mg (~18% DV); Potassium ~350mg (~10% DV); Thiamine (B1) ~0.35mg (~29% DV); Folate ~76µg (~19% DV); Vitamin B6 ~0.16mg (~12% DV). Bioactive Compounds: Essential oil fraction (5-15% of dry weight) dominated by monoterpenes - sabinene (20-50% of volatile fraction), α-pinene (15-30%), β-pinene (5-15%), limonene (2-8%), myrcene (1-5%). Phenylpropanoids: myristicin (1-4% of essential oil, primary psychoactive constituent at high doses), elemicin (0.1-2%), safrole (trace to 0.5%), eugenol (0.5-2%). Fixed oils (nutmeg butter, ~24-40g/100g): trimyristin comprising ~75% of fixed oil fraction. Lignans: erythro- and threo-dihydroguaiaretic acid present at ~0.1-0.5% dry weight. Flavonoids: phenolic compounds including malabaricone A, B, C (~0.1-0.3%). Bioavailability Notes: Fat-soluble compounds (myristicin, elemicin, myristic acid) require dietary fat for absorption; myristic acid, while highly saturated, demonstrates moderate intestinal absorption (~95%); myristicin undergoes hepatic first-pass [metabolism](/ingredients/condition/weight-management) to amphetamine-like metabolites at toxic doses (>5g whole seed); manganese bioavailability estimated at 5-10% due to presence of phytates and fiber; essential oil bioavailability enhanced when consumed with lipid-containing foods. Typical culinary serving (~1-2g ground) provides negligible micronutrient contribution but meaningful essential oil exposure (~10-40mg myristicin).

## Dosage & Preparation

No human clinical dosages established. Preclinical mouse studies used methanolic seed extract at 500 mg/kg orally. Traditional culinary use involves seed powder but therapeutic doses are not evidenced. No standardization details for myristicin content are available. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

At culinary doses, Myristica fragrans is generally recognized as safe, but at higher doses (approaching 5–15 g of ground nutmeg), myristicin and elemicin can cause hallucinations, tachycardia, nausea, and anticholinergic symptoms due to MAO inhibition and central nervous system stimulation. Individuals taking MAO inhibitor (MAOI) antidepressants such as phenelzine or tranylcypromine should avoid concentrated nutmeg supplements due to risk of serotonergic or hypertensive crisis. Nutmeg may potentiate the effects of anticoagulants and CNS-active drugs; concurrent use with warfarin or psychoactive medications warrants medical supervision. Pregnant women should avoid supplemental doses of Myristica fragrans, as myristicin and safrole have shown embryotoxic and genotoxic potential in animal studies.

## Scientific Research

Current evidence is limited to preclinical studies with no human clinical trials, RCTs, or meta-analyses identified. The most substantial study (PMID: 39507782) tested methanolic seed extract in immunocompetent (n=50) and immunosuppressed mice (n=50), showing 80-81% parasite reduction comparable to nitazoxanide. Additional in-vitro studies demonstrated antifungal and cytotoxic effects of isolated compounds.

## Historical & Cultural Context

Myristica fragrans seed has been used for centuries in Traditional Chinese Medicine, Ayurveda, and Unani systems for gastrointestinal regulation, including diarrhea and [digestion](/ingredients/condition/gut-health) support, as a tonic, and for pain relief. Historical applications as [antimicrobial](/ingredients/condition/immune-support), [anti-inflammatory](/ingredients/condition/inflammation), and [neuroprotective](/ingredients/condition/cognitive) agent bridge to modern preclinical confirmations of hypolipidemic, [antioxidant](/ingredients/condition/antioxidant), and antidiabetic effects.

## Synergistic Combinations

Nitazoxanide, Black pepper extract, Turmeric, Ginger, Clove

## Frequently Asked Questions

### What is myristicin in nutmeg and what does it do?

Myristicin is the primary phenylpropanoid compound in Myristica fragrans, comprising up to 4% of nutmeg essential oil. It functions as a weak MAO inhibitor and modulates NF-κB signaling to suppress inflammatory cytokines, and at high doses it acts as a psychoactive compound capable of causing hallucinations by interacting with serotonin and dopamine pathways.

### Can nutmeg kill parasites like Cryptosporidium?

A mouse model study found that Myristica fragrans extract at 500 mg/kg reduced Cryptosporidium parvum oocyst shedding by 80–81%, suggesting meaningful antiparasitic activity. However, this evidence is preliminary and limited to animal research; no human clinical trials have confirmed this antiparasitic effect or established an equivalent safe human dose.

### Is nutmeg safe to take as a supplement every day?

Culinary amounts of nutmeg (under 1 g) are considered safe for daily use, but supplemental doses above 5 g can cause myristicin toxicity, presenting as hallucinations, rapid heartbeat, dry mouth, and nausea. No established safe daily supplemental dose for therapeutic use has been validated in human clinical trials, so supplementation beyond culinary use should be approached cautiously and under medical guidance.

### Does nutmeg have antifungal properties?

Yes, elemicin, an isolated compound from Myristica fragrans, has demonstrated antifungal activity in vitro, believed to work by disrupting fungal cell membrane integrity through interference with ergosterol synthesis. These findings are currently limited to laboratory studies, and no clinical trials have evaluated the antifungal efficacy of nutmeg supplements in humans with fungal infections.

### Can nutmeg supplements interact with antidepressants?

Myristica fragrans contains myristicin, which inhibits monoamine oxidase (MAO), creating a clinically significant interaction risk with MAOI antidepressants such as phenelzine, selegiline, and tranylcypromine. Combining high-dose nutmeg with MAOIs may precipitate a hypertensive crisis or serotonin syndrome; individuals on any antidepressant, including SSRIs, should consult a physician before using nutmeg supplements.

### What is the difference between whole nutmeg powder and nutmeg extract supplements?

Whole nutmeg powder contains all the seed components including myristicin, elemicin, and fiber, while nutmeg extracts concentrate specific active compounds through processing. Extract forms may offer higher bioavailability of isolated compounds like elemicin shown to have antifungal activity in-vitro, but whole powder provides a broader spectrum of constituents. The choice depends on whether you seek concentrated therapeutic effects or a more complete food-based approach.

### Is nutmeg supplementation safe for children?

Nutmeg in culinary amounts is generally recognized as safe for children, but supplemental doses require caution due to myristicin content and potential toxicity at high levels. No established pediatric dosing guidelines exist for nutmeg supplements, and toxicity risk increases with concentrated forms and larger doses. Consult a pediatrician before giving nutmeg supplements to children, as individual sensitivity varies significantly.

### How strong is the clinical evidence for nutmeg's antiparasitic benefits?

Current evidence for nutmeg's antiparasitic activity comes primarily from preliminary mouse studies showing 80-81% reduction in Cryptosporidium oocyst shedding at high doses (500 mg/kg), which has not yet been validated in human clinical trials. While the results are promising, this remains pre-clinical evidence and cannot yet support medical claims for human parasitic infections. Human studies are needed to determine effective dosing, safety, and real-world efficacy before making treatment recommendations.

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