# Lemongrass

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/lemongrass
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-15
**Evidence Score:** 6 / 10
**Category:** Extract
**Also Known As:** Cymbopogon citratus, LG, LGEO (lemongrass essential oil), Halfbar, Lemon grass

## Overview

Lemongrass (Cymbopogon citratus) extract contains citral and geraniol as primary bioactive compounds that activate caspase-3 pathways to induce apoptosis in cancer cells while inhibiting Src-tyrosine kinase phosphorylation. The extract demonstrates potent enzyme inhibition, including 57.19 mg kojic acid equiv./g tyrosinase inhibition and 2.40 mmol acarbose equiv./g α-glucosidase inhibition.

## Health Benefits

- **Supports [digestive health](/ingredients/condition/gut-health)**: by stimulating digestive enzymes and reducing bloating.
- **Enhances [immune function](/ingredients/condition/immune-support)**: through antimicrobial and antiviral properties of citral and flavonoids.
- **Aids in blood**: sugar and metabolic regulation by enhancing [insulin sensitivity](/ingredients/condition/weight-management) and stabilizing glucose levels.
- **Promotes [cardiovascular health](/ingredients/condition/heart-health)**: by reducing LDL cholesterol and regulating blood pressure.
- **Provides [anti-inflammatory](/ingredients/condition/inflammation) and**: [antioxidant protection](/ingredients/condition/antioxidant) by neutralizing oxidative stress and reducing systemic inflammation.
- **Supports detoxification and**: [liver health](/ingredients/condition/detox) by promoting bile production and liver enzyme activation.

## Mechanism of Action

Citral (geranial and neral) activates caspase-3 to induce DNA fragmentation and apoptosis in cancer cells while inhibiting Src-tyrosine kinase phosphorylation at Y416, reducing Stat3 activation and antiapoptotic proteins Bcl-xL/Mcl-1. Geraniol triggers [mitochondrial](/ingredients/condition/energy) apoptosis by upregulating pro-apoptotic proteins and suppresses angiogenesis via VEGFR-2 downregulation. The extract's [antimicrobial](/ingredients/condition/immune-support) effects occur through membrane disruption, while [neuroprotective](/ingredients/condition/cognitive) actions reduce [lipid peroxidation](/ingredients/condition/antioxidant) markers MDA/NO and boost antioxidant enzymes GSH/CAT.

## Clinical Summary

Current evidence is primarily based on in vitro and animal studies rather than human clinical trials. Laboratory studies demonstrate significant enzyme inhibition activity, with volatile oil showing 57.19 mg kojic acid equiv./g tyrosinase inhibition and n-hexane extract showing 1.53 mg galanthamine equiv./g BChE inhibition. Animal models show restored [antioxidant](/ingredients/condition/antioxidant) markers including reduced MDA/NO levels and increased GSH/CAT activity in neuroprotection studies. Human clinical trial data with specific quantified outcomes are currently lacking and needed to confirm therapeutic efficacy.

## Nutritional Profile

- Vitamin C: Supports [immune function](/ingredients/condition/immune-support) and [collagen synthesis](/ingredients/condition/skin-health).
- Potassium, Calcium, Magnesium: Aid nerve function, circulation, and [muscle relaxation](/ingredients/condition/sleep).
- Citral (Geranial and Neral): Potent antimicrobial, antifungal, and [anti-inflammatory](/ingredients/condition/inflammation) compound.
- Flavonoids and Polyphenols: Protect against oxidative stress and support [cardiovascular health](/ingredients/condition/heart-health).
- Limonene and Myrcene: Enhance [antioxidant activity](/ingredients/condition/antioxidant) and support respiratory health.
- Terpenes (Beta-caryophyllene, Linalool): Support mood balance and [stress resilience](/ingredients/condition/stress).

## Dosage & Preparation

- Common forms: Fresh stalks, dried herb, essential oil, tincture, powdered extract.
- Preparation: Use fresh stalks in culinary dishes, steep dried herb for teas, or dilute essential oil for aromatherapy/topical use.
- Dosage: 500–1,500mg of standardized extract daily, or 1–3g of dried lemongrass infused in teas, for gut, immune, and metabolic health.
- Contraindications: Consult a healthcare provider before internal use of essential oil.

## Safety & Drug Interactions

Research indicates low cytotoxicity for lemongrass compounds like luteolin glycosides, with studies showing general safety without adverse effects flags. However, comprehensive safety data including specific drug interactions, contraindications, and pregnancy safety profiles are not well-established in current literature. As with all herbal extracts, potential interactions with medications metabolized by cytochrome P450 enzymes should be considered. Clinical supervision is recommended, particularly for individuals with diabetes taking glucose-lowering medications, given the extract's demonstrated effects on α-amylase and α-glucosidase enzymes.

## Scientific Research

Clinical research supports Lemongrass's role in [digestive enzyme](/ingredients/condition/gut-health) activation, [antimicrobial](/ingredients/condition/immune-support) and immune-boosting properties, and blood sugar regulation. Studies also highlight its [cardiovascular](/ingredients/condition/heart-health) protective effects, lipid [metabolism](/ingredients/condition/weight-management) support, and [anti-inflammatory](/ingredients/condition/inflammation) and detoxification pathways, primarily through its rich phytochemical profile.

## Historical & Cultural Context

Lemongrass has been a vital component of traditional medicine across Asia and Africa for centuries. Ayurvedic physicians prescribed it for [digestion](/ingredients/condition/gut-health), detoxification, and fever, while in Thailand, it is foundational in cuisine and healing tonics. Traditional Chinese Medicine utilized lemongrass to clear heat and invigorate [liver function](/ingredients/condition/detox), cementing its role in holistic wellness.

## Synergistic Combinations

Role: Herbal amplifier
Intention: Immune & [Inflammation](/ingredients/condition/inflammation) | Gut & [Microbiome](/ingredients/condition/gut-health)
Primary Pairings: - Ginger (Zingiber officinale)
- Turmeric (Curcuma longa)
- Fennel (Foeniculum vulgare)
- Dandelion Root (Taraxacum officinale)

## Frequently Asked Questions

### What is the primary active compound in lemongrass extract?

Citral, composed of geranial and neral isomers, is the major bioactive compound in lemongrass extract. This terpenoid compound activates caspase-3 pathways and inhibits Src-tyrosine kinase phosphorylation, contributing to the extract's antimicrobial and anticancer properties.

### How does lemongrass extract help with blood sugar control?

Lemongrass extract inhibits key digestive enzymes with n-hexane extract showing 0.39 mmol acarbose equiv./g α-amylase inhibition and 2.40 mmol acarbose equiv./g α-glucosidase inhibition. These enzyme inhibitions help slow carbohydrate digestion and glucose absorption, potentially stabilizing blood sugar levels.

### Is lemongrass extract safe for daily consumption?

Studies show low cytotoxicity for lemongrass compounds, but comprehensive human safety data is limited. While generally considered safe, clinical supervision is recommended especially for diabetics taking medications, as the extract significantly affects glucose-regulating enzymes.

### What antioxidant capacity does lemongrass extract have?

Lemongrass extract demonstrates significant antioxidant activity with capacity up to 43.01 mmol Trolox equiv./g in laboratory testing. The extract contains over 117 identified phenolic compounds and flavonoids that contribute to its free radical scavenging abilities.

### How does lemongrass extract work against cancer cells?

Citral in lemongrass activates caspase-3 to induce DNA fragmentation and apoptosis in cancer cells including hematopoietic, ovarian, and prostate cancer types. Geraniol triggers mitochondrial apoptosis pathways and suppresses tumor blood vessel formation by downregulating VEGFR-2 receptors.

### Does lemongrass extract interact with blood pressure or diabetes medications?

Lemongrass extract may potentiate the effects of antidiabetic and antihypertensive medications due to its glucose-lowering and blood pressure-reducing properties, potentially requiring dosage adjustments. Individuals taking medications for diabetes, hypertension, or blood thinners should consult their healthcare provider before supplementing with lemongrass extract to avoid hypoglycemic or hypotensive episodes. The citral and flavonoid content in lemongrass may also inhibit certain cytochrome P450 enzymes, affecting metabolism of some prescription drugs.

### What is the difference between lemongrass tea, extract, and essential oil for health benefits?

Lemongrass tea contains water-soluble compounds and provides gentle digestive and antimicrobial benefits, while standardized extracts deliver concentrated bioavailable citral and flavonoids for more potent metabolic and immune effects. Essential oil is highly concentrated and should never be ingested internally without professional guidance, as it carries toxicity risks at therapeutic doses. For supplementation, standardized extracts offer the most controlled dosing and consistent potency compared to variable tea preparations.

### Who should avoid lemongrass supplementation, and are there specific populations that benefit most?

Pregnant and breastfeeding women should avoid lemongrass supplementation due to potential uterotonic effects, and individuals with grass allergies or estrogen-sensitive conditions should exercise caution. People with prediabetes, metabolic syndrome, or those seeking cardiovascular and digestive support benefit most from lemongrass supplementation. Elderly individuals should start with lower doses due to potential interactions with existing medications and age-related changes in metabolism.

## References

Sources: https://pubmed.ncbi.nlm.nih.gov/31968542; https://doi.org/10.1016/j.foodchem.2020.126589; https://www.sciencedirect.com/science/article/pii/S1756464619306591; https://www.frontiersin.org/articles/10.3389/fphar.2021.672034/full; https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7683259/
PubMed PMID(s): (see study_urls) | Sources: pubmed.ncbi.nlm.nih.gov, sciencedirect.com, ncbi.nlm.nih.gov
Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3217679/; https://pubmed.ncbi.nlm.nih.gov/18693097/; https://www.sciencedirect.com/science/article/abs/pii/S222116911500091X

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