# Mate (Ilex paraguariensis)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/mate
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-19
**Evidence Score:** 8 / 10
**Category:** South American
**Also Known As:** Ilex paraguariensis, Yerba mate, Paraguay tea, Jesuit's tea, Maté, Erva-mate, Chimarrão, Tereré

## Overview

Mate (Ilex paraguariensis) is a South American plant containing high caffeine concentrations (273.5 mg/g) that provides stimulant effects and [antioxidant activity](/ingredients/condition/antioxidant). The polyphenolic compounds demonstrate free-radical scavenging through enhanced catalase-like activity in laboratory studies.

## Health Benefits

• [Antioxidant activity](/ingredients/condition/antioxidant) through free-radical scavenging (preliminary evidence from in-vitro studies showing high catalase-like activity)
• Traditional stimulant properties attributed to caffeine content (273.5 × 10⁻² mg/g in optimized extraction)
• [Antimicrobial](/ingredients/condition/immune-support) activity (traditional use only, no clinical evidence provided)
• Diuretic effects (traditional use only, no clinical evidence provided)
• Note: No human clinical trials were available in the research to confirm these traditional uses

## Mechanism of Action

Mate's caffeine content (273.5 × 10⁻² mg/g) blocks adenosine receptors in the central nervous system, providing stimulant effects. The polyphenolic compounds demonstrate [antioxidant activity](/ingredients/condition/antioxidant) by enhancing catalase enzyme function, which breaks down hydrogen peroxide into water and oxygen, reducing oxidative cellular damage.

## Clinical Summary

Current evidence for mate is primarily limited to in-vitro laboratory studies and traditional use documentation. Preliminary studies show high catalase-like [antioxidant activity](/ingredients/condition/antioxidant) in cell cultures, but no clinical trials have been completed to confirm these effects in humans. The caffeine content has been quantified through optimized extraction methods, but therapeutic dosing and clinical efficacy remain unestablished. More human studies are needed to validate the traditional stimulant and health claims.

## Nutritional Profile

Bioactive compounds: caffeine 273.5 × 10⁻² mg/g (per optimized extraction conditions), theobromine and theophylline present in smaller quantities (xanthine alkaloid profile typical of Ilex genus). Polyphenols: chlorogenic acids are primary phenolic constituents (including 3-caffeoylquinic acid, 4-caffeoylquinic acid, 5-caffeoylquinic acid), caffeic acid derivatives, and rutin (quercetin-3-rutinoside); total polyphenol content ranges approximately 60–130 mg gallic acid equivalents per gram dry weight depending on preparation method. Saponins: ursolic acid and oleanolic acid glycosides present, contributing bitter notes and implicated in lipid-modulating effects in preclinical studies. Minerals: potassium (high relative concentration, ~1,000–2,000 mg/100g dry leaf), magnesium (~200–400 mg/100g dry leaf), manganese, and iron present at moderate levels; calcium and phosphorus also detected. Vitamins: vitamin C (ascorbic acid) detected in fresh leaf, significantly reduced upon drying and hot-water extraction; B-vitamins including riboflavin (B2) and nicotinic acid (B3) reported in trace amounts. Fiber: insoluble dietary fiber present in leaf material but largely not bioavailable via infusion preparation; soluble fraction negligible in brewed mate. Protein: leaf contains ~10–15% crude protein by dry weight, but negligible protein transfers to infusion. Bioavailability notes: caffeine bioavailability from mate infusion is high and comparable to coffee; chlorogenic acid absorption is partial, with gut microbiota-mediated conversion to smaller phenolic metabolites (e.g., caffeic acid, ferulic acid) contributing to systemic [antioxidant](/ingredients/condition/antioxidant) load; mineral bioavailability from infusion is limited relative to solid food sources; saponin absorption is low but may exert local gastrointestinal effects.

## Dosage & Preparation

No clinically studied dosage ranges were available in the provided research. Traditional preparation involves steeping dried leaves in hot water, while commercial extracts may contain standardized amounts of caffeine (273.5 × 10⁻² mg/g) and chlorogenic acid (351.6 × 10⁻² mg/g). Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Mate's high caffeine content may cause [insomnia](/ingredients/condition/sleep), anxiety, elevated heart rate, and [blood pressure](/ingredients/condition/heart-health) in sensitive individuals. It may interact with stimulant medications, blood thinners, and MAO inhibitors due to caffeine content. Pregnant and breastfeeding women should limit intake due to caffeine exposure risks to the developing fetus. Individuals with cardiovascular conditions, anxiety disorders, or caffeine sensitivity should consult healthcare providers before use.

## Scientific Research

The provided research focuses exclusively on chemical composition analysis and extraction methodology, with no human clinical trials, randomized controlled trials, or meta-analyses available. The research demonstrates that spray-dried mate extract shows high [antioxidant activity](/ingredients/condition/antioxidant) related to its total polyphenol content (178.32 mg/g), but clinical efficacy studies with PMIDs were not included in the available literature.

## Historical & Cultural Context

Yerba-mate leaves have been traditionally used in South American medicine systems for their stimulant, [antioxidant](/ingredients/condition/antioxidant), [antimicrobial](/ingredients/condition/immune-support), and diuretic properties. The provided research does not specify the duration of traditional use or detail specific traditional medicine practices beyond general South American usage.

## Synergistic Combinations

Green tea, guarana, rhodiola, ginseng, L-theanine

## Frequently Asked Questions

### How much caffeine is in mate?

Mate contains 273.5 × 10⁻² mg/g of caffeine according to optimized extraction studies. This makes it a significant caffeine source comparable to coffee, providing substantial stimulant effects.

### What antioxidants are in mate?

Mate contains polyphenolic compounds that demonstrate catalase-like activity in laboratory studies. These compounds show free-radical scavenging properties, though clinical confirmation in humans is still needed.

### Is mate safe to drink daily?

Daily mate consumption safety depends on individual caffeine tolerance and total daily caffeine intake. The high caffeine content may cause side effects like anxiety, insomnia, or elevated heart rate with excessive use.

### Can mate help with weight loss?

While mate's caffeine content may theoretically boost metabolism, no clinical studies have specifically evaluated mate for weight loss efficacy. Claims are based primarily on traditional use rather than scientific evidence.

### Does mate have antimicrobial properties?

Antimicrobial activity is reported in traditional use, but no clinical studies have confirmed these effects. Current evidence is limited to historical applications rather than controlled scientific research.

### What is the difference between mate, yerba mate, and matcha?

Mate (Ilex paraguariensis) is a South American beverage made from the leaves of a holly plant, traditionally consumed in a gourd with a metal straw. Yerba mate is simply another name for the same plant and product. Matcha, by contrast, is a powdered green tea from Japan (Camellia sinensis) with a different plant origin, flavor profile, and slightly different nutrient composition, though both contain caffeine and antioxidants.

### Is mate safe to consume during pregnancy or while breastfeeding?

Due to mate's caffeine content (approximately 196 mg per liter in traditional preparation), pregnant and breastfeeding women should consult their healthcare provider before regular consumption, as high caffeine intake has been associated with increased miscarriage risk and may pass into breast milk. Most medical authorities recommend limiting caffeine to under 200 mg daily during pregnancy, making mate consumption a decision best made with professional guidance based on individual circumstances.

### Does mate interact with medications or affect nutrient absorption?

Mate's caffeine and polyphenol content may interact with certain medications, including those metabolized by CYP1A2 enzymes, stimulant medications, and some blood pressure regulators. Additionally, the tannins in mate can reduce iron and calcium absorption when consumed in large quantities alongside meals, so spacing mate consumption at least 2 hours away from iron or calcium supplements is advisable for those with deficiency risks.

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