GUAYUSA
Botanical name:
Ilex guayusa
Alternative names:
Wayusa, waisa, wayus
Main indications:
morning alertness
communal Kichwa tea
sustained caffeine — still caffeine, not “no crash” as a medical claim
THIS PLANT IS PART OF THE SUSURRO DEL INIA AND CORAZÓN DEL PUMA HERMAL FORMULAS.
Short characteristics:
Guayusa is Ilex guayusa, a caffeinated holly of Amazonian Ecuador and northern Peru. Kichwa households boil a pot in the evening, leave it overnight, and drink it at dawn. The leaf holds caffeine, theobromine, and chlorogenic acids. That is a morning tea, not a better-than-coffee medicine.
A large pot delivers caffeine more slowly than a short espresso. It is still caffeine. Wise and Negrin 2020 reviewed the holly. Pardau 2017 compared cell antioxidant activity with green and black tea — a dish, not a human superiority trial.
House formulas: Susurro del Inia, Corazón del Puma. This site sells nothing.
The usual way of use:
Traditional overnight maceration after an evening boil, drunk in the morning. Warm it again if you want.
Extracts follow the label. This site sells nothing.
WARNING: Caffeine. Pregnancy, heart rhythm, insomnia, and stacking with coffee, guaraná, or other stimulants are the usual cautions.
Composition
Xanthines (caffeine, theobromine) plus phenolics, including chlorogenic acids. Not a mystery adaptogen.
Traditional use
Kichwa dawn pot, hunters, and folk tea for a cold morning. Related caffeine plant: guaraná. Formulas: Susurro del Inia, Corazón del Puma.
Precautions
Caffeine: pregnancy, arrhythmia, sleep, children. “Anti-aging” and “better than coffee” are marketing. ResearchGate-only Dueñas is not a primary cite here.
Opened studies
Wise and Negrin (2020). Ilex guayusa: a review. Critical Reviews in Food Science and Nutrition. Holly review, not a superiority trial versus coffee. PMID 31366209 · doi:10.1080/10408398.2019.1643286.
Pardau et al. (2017). Guayusa versus green/black tea in cell antioxidant assays. Food & Function. Cell work, not a human trial. PMID 29134218 · doi:10.1039/c7fo01067b.