Leaf & Herb · Leaf/Green

Guayusa Leaf

Provisional Moderate ScoreCompound

Hermetica Superfood Encyclopedia

Published March 15, 2026Last updated March 15, 2026Methodology · Editorial policy · Report an error

Evidence review status: unreviewed

Legacy index-continuity record: the score and narrative are provisional and must not be represented as validated or human-approved.

Review flags: AWAITING_SEMANTIC_VALIDATION

Provisional Summary

Guayusa leaf (Ilex guayusa) contains a unique combination of caffeine (29-75.7 mg/g), theobromine, and L-theanine that provides sustained energy without jitters by modulating dopamine, norepinephrine, and serotonin pathways. Its triterpenoids like ursolic acid activate membrane receptors to boost GLP-1 secretion, enhancing insulin sensitivity and glucose metabolism.

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Screened PMID Records

Reported Benefits

Pending

Synergy Review

At a Glance

CategoryLeaf & Herb

GroupLeaf/Green

Public Score StatusProvisional Moderate

Primary KeywordGuayusa Leaf benefits

Guayusa Leaf — botanical close-up

Reported Benefits (Provisional)

Enhances cognitive function,

providing mental clarity, focus, and alertness through its unique blend of caffeine, theobromine, and L-theanine.

Combats oxidative stress

with polyphenols and chlorogenic acids, promoting cellular protection and healthy aging.

Supports cardiovascular wellness

by improving circulation, regulating blood pressure, and reducing arterial inflammation.

Promotes metabolic health

by regulating blood sugar levels and enhancing fat oxidation.

Offers adaptogenic benefits,: increasing stress resilience and physical stamina

Boosts overall vitality

by supplying essential amino acids that support energy metabolism.

Origin & History

Natural habitat

Guayusa Leaf (*Ilex guayusa*) is a species of holly tree native to the Amazon rainforest regions of Ecuador, Peru, and Colombia. Revered for its unique blend of stimulating compounds and antioxidants, it provides sustained energy and cognitive clarity without the jitters, making it a potent functional botanical.

“Guayusa holds deep cultural and historical significance in the Amazonian traditions of the Kichwa people in Ecuador, Peru, and Colombia. It was revered for centuries in early-morning rituals to enhance stamina, mental clarity, and spiritual connection, and used during night watches for sustained alertness.”Traditional Medicine

Research Narrative (Provisional)

Scientific research, including studies published in peer-reviewed journals, validates Guayusa's cognitive-enhancing, antioxidant, and cardiovascular benefits. Investigations highlight the synergistic effects of its unique alkaloid and polyphenol profile in promoting sustained energy and mental clarity.

Preparation & Dosage

Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.

Nutritional Profile

- Alkaloids: Caffeine, Theobromine. - Amino Acids: L-theanine, L-arginine. - Phytochemicals: Chlorogenic acids, Polyphenols, Saponins. - Minerals: Potassium, Magnesium, Calcium.

Reported Mechanism (Provisional)

Mechanism of Action

Guayusa's caffeine and theobromine provide stimulant effects while L-theanine modulates neurotransmitters including dopamine, norepinephrine, and serotonin to reduce jitteriness and enhance focus. Triterpenoids such as ursolic acid activate membrane receptors to stimulate incretin hormone (GLP-1) secretion, promoting insulin release and glucose uptake. Polyphenols including chlorogenic acid and catechins (epicatechin, EGCG) inhibit nitric oxide production and provide cellular antioxidant protection.

Clinical Narrative (Provisional)

Human clinical trials on guayusa are currently lacking, with most evidence coming from in vitro and animal studies. Laboratory research shows guayusa extracts provide 70-80% protection of Caco-2 cells from oxidative damage at 1 g/mL concentration and achieve 10-30% nitric oxide inhibition in cellular models. Comparative analyses suggest antioxidant potency exceeding green tea, though quantified human endpoint data for metabolic or cognitive outcomes are not yet available. The evidence base remains preliminary and requires dedicated human clinical trials.

Also Known As

Ilex guayusa Loes.Amazonian holly leafGuayusa tea

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These statements have not been evaluated by the Food and Drug Administration. This content is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease.

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