# Nettle Leaf

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/nettle-leaf
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-15
**Evidence Score:** 4 / 10
**Category:** Leaf/Green
**Also Known As:** Urtica dioica L., Stinging nettle, Common nettle, European nettle, Greater nettle

## Overview

Nettle leaf (Urtica dioica) contains flavonoids including apigenin and kaempferol alongside phenolic acids that inhibit NF-κB activation and suppress [pro-inflammatory cytokine](/ingredients/condition/inflammation)s. In vitro studies demonstrate 5 mg/mL ethanol extract reduces TNF-α by 50.8% and IL-1β by 99.7% in LPS-stimulated human blood.

## Health Benefits

- **Supports [immune function](/ingredients/condition/immune-support)**: by enhancing antimicrobial and [antioxidant activity](/ingredients/condition/antioxidant), bolstering defenses.
- **Promotes [cardiovascular](/ingredients/condition/heart-health) wellness**: by improving circulation and reducing arterial inflammation.
- **Aids in metabolic**: regulation by balancing blood sugar levels and supporting healthy lipid [metabolism](/ingredients/condition/weight-management).
- **Enhances [digestive health](/ingredients/condition/gut-health)**: by soothing gut inflammation and promoting enzymatic activity.
- **Provides [neuroprotective](/ingredients/condition/cognitive) benefits**: by reducing oxidative stress and supporting cognitive clarity.
- **Supports joint health**: by modulating [inflammatory pathway](/ingredients/condition/inflammation)s and reducing discomfort.
- **Assists [liver detox](/ingredients/condition/detox)ification**: processes, promoting the elimination of toxins.

## Mechanism of Action

Nettle leaf's flavonoids (apigenin, kaempferol, luteolin) and phenolic acids (chlorogenic, caffeic, ferulic acid) inhibit NF-κB activation by preventing degradation of its inhibitor protein. This suppresses [inflammatory](/ingredients/condition/inflammation) cytokine gene expression including TNF-α and IL-1β, while also blocking histamine H1 receptors, COX-1/COX-2 enzymes, and interfering with TLR4 pathway activation in macrophages.

## Clinical Summary

Current evidence is primarily from in vitro and animal studies, with limited human clinical trial data available. Laboratory studies show 5 mg/mL ethanol nettle leaf extract suppressed TNF-α by 50.8% and IL-1β by 99.7% in LPS-stimulated human whole blood samples. Dichloromethane leaf extracts demonstrated potent [NF-κB](/ingredients/condition/inflammation) inhibition in RAW 264.7 macrophages compared to other solvent preparations. Animal studies indicate reduced [lipid peroxidation](/ingredients/condition/antioxidant) in diabetic rat models, but human efficacy data with specific dosages and outcomes remains limited.

## Nutritional Profile

- Vitamins: A, C, K, E
- Minerals: Calcium, Magnesium, Iron, Silica, Zinc
- Phytochemicals/Bioactives: Chlorophyll, Polyphenols, Flavonoids, Tannins, Beta-sitosterol, Lignans, Phytosterols, Lecithin
- Other: Essential fatty acids (Linoleic acid, Alpha-linolenic acid)

## Dosage & Preparation

- Common forms: Herbal infusion (tea), dried powder, tincture.
- Traditionally consumed as a herbal infusion or cooked green for blood purification, joint mobility, and [immune support](/ingredients/condition/immune-support).
- Modern applications include high-[antioxidant](/ingredients/condition/antioxidant) superleaf powders, [cardiovascular](/ingredients/condition/heart-health)-supporting botanical extracts, and immune-boosting nutraceuticals.
- Dosage: 1–2 cups of herbal tea daily, or 500–1000 mg of dried powdered extract.

## Safety & Drug Interactions

Fresh nettle leaves cause topical stinging reactions upon contact, though processed extracts appear well-tolerated in available studies. No specific drug interactions or contraindications are documented in current research, though this may reflect limited human safety data rather than confirmed safety. Pregnant and nursing women should avoid use due to insufficient safety data. Patients on anticoagulant medications should consult healthcare providers before use given nettle's traditional circulatory effects.

## Scientific Research

Numerous studies, including in vitro, animal models, and some human clinical trials, support Nettle Leaf's [anti-inflammatory](/ingredients/condition/inflammation), [antioxidant](/ingredients/condition/antioxidant), and [immunomodulatory](/ingredients/condition/immune-support) properties. Research highlights its potential for metabolic regulation, [cardiovascular](/ingredients/condition/heart-health) support, and detoxification, validating many of its traditional uses.

## Historical & Cultural Context

Nettle Leaf has been revered across European, Native American, and Ayurvedic traditions for centuries. In Europe, it was a symbol of strength and used by warriors for [stamina](/ingredients/condition/energy), while in Native American folklore, it represented protection and fertility. It is deeply rooted in traditional medicine for purifying the blood, supporting [joint health](/ingredients/condition/inflammation), and fortifying the [immune system](/ingredients/condition/immune-support).

## Synergistic Combinations

Role: Mineral cofactor
Intention: Immune & [Inflammation](/ingredients/condition/inflammation) | Cardio & Circulation
Primary Pairings: - Ginger (Zingiber officinale)
- Turmeric (Curcuma longa)
- Moringa (Moringa oleifera)
- Camu Camu (Myrciaria dubia)

## Frequently Asked Questions

### What are the main active compounds in nettle leaf?

Nettle leaf contains flavonoids including apigenin, kaempferol, isorhamnetin, catechin, and luteolin, plus phenolic acids like chlorogenic, caffeic, ferulic, and gallic acid. It also provides amino acids (alanine, glutamic acid), carotenoids, and fatty acids that contribute to its bioactivity.

### How does nettle leaf reduce inflammation?

Nettle leaf inhibits NF-κB activation by preventing degradation of its inhibitor protein, which reduces inflammatory cytokine gene expression. Studies show 5 mg/mL extract suppresses TNF-α by 50.8% and IL-1β by 99.7% in stimulated immune cells.

### Is nettle leaf safe to consume daily?

Processed nettle leaf extracts appear well-tolerated in available studies, though comprehensive human safety data is limited. Fresh leaves cause stinging reactions, but dried or processed forms typically don't cause adverse effects in healthy adults.

### Can nettle leaf interact with blood pressure medications?

No specific drug interactions are documented in current research, though this may reflect limited clinical data. Given nettle's traditional cardiovascular effects, patients on blood pressure or anticoagulant medications should consult healthcare providers before use.

### What's the difference between nettle leaf and nettle root?

Nettle leaf contains primarily flavonoids and phenolic acids with anti-inflammatory properties, while nettle root has different compounds and traditional uses. Dichloromethane leaf extracts showed superior NF-κB inhibition compared to other plant parts in laboratory studies.

### What is the recommended daily dosage of nettle leaf, and when should I take it?

Typical nettle leaf dosages range from 300-600 mg per day in capsule form, or 1-3 cups of brewed tea, though individual needs vary. It's best taken with meals to enhance absorption and minimize any potential gastrointestinal sensitivity, and consistency over time yields better results for immune and cardiovascular support. Always start with lower doses to assess tolerance before increasing intake.

### Is nettle leaf safe during pregnancy and breastfeeding?

While nettle leaf is traditionally used to support pregnancy wellness, pregnant and breastfeeding women should consult their healthcare provider before supplementing, as safety data is limited in these populations. Some herbalists recommend nettle leaf tea in the second and third trimesters for mineral support, but dosage and individual circumstances must be evaluated by a qualified practitioner.

### What form of nettle leaf supplement offers the best absorption and effectiveness?

Nettle leaf tea and fresh plant extracts typically offer superior bioavailability compared to dried leaf capsules, as the aqueous extraction process releases water-soluble minerals and active compounds more efficiently. Standardized extracts may provide consistent potency, but whole-leaf preparations preserve the full spectrum of phytonutrients that contribute to nettle's anti-inflammatory and immune-supporting benefits. For optimal results, rotating between tea and capsule forms can prevent tolerance while maximizing nutrient absorption.

## References

Sources: https://pubmed.ncbi.nlm.nih.gov/31893658; https://www.sciencedirect.com/science/article/pii/S2213453018301883; https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7184321/
Sources: fdc.nal.usda.gov, pubmed.ncbi.nlm.nih.gov

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