Guayusa

For those who want to go below the page: botany, chemistry, then four voices, each one named. ◆ what the tradition left in writing, ◇ what research has measured, ● what our dreamers tell us, ☾ what the House says.

Botany: a holly

Guayusa (Ilex guayusa Loes., synonym Ilex utilis) belongs to the genus Ilex, the hollies, of the Aquifoliaceae. Botanically she has nothing to do with tea (Camellia sinensis) or coffee (Coffea). Her close cousins are yerba mate (Ilex paraguariensis) of South America and yaupon (Ilex vomitoria), drunk by the peoples of the North American south-east as a ceremonial "black drink": three caffeinated hollies of the Americas, each tied to shared rituals of waking.

She is an evergreen tree that can reach some fifteen metres, with oval, alternate leaves. She grows in the humid forests of the upper Amazon — mainly Ecuador, and the edges of north-eastern Peru and south-western Colombia — and rarely flowers in cultivation. Most known stands are tended by people: guayusa has travelled with human hands for so long that she can hardly be separated from the cultures that care for her.

Phytochemistry (descriptive)

Guayusa is above all a plant of methylxanthines. According to the figures reported by Rätsch, her leaves typically hold 1.7 to 1.8 % caffeine, sometimes 3 to 4 %; the highest value measured, about 7.6 % of dry matter, is a maximum and not a typical figure (Negrin et al. 2019, via Noriega et al. 2025). Theobromine, the alkaloid of cacao, is present in small amounts (about 0.02 to 0.12 % in decoctions), and theophylline only in traces. The leaves are also rich in polyphenols: catechins, chlorogenic acids, flavonoids.

◆ The documented tradition

Among the Kichwa of Ecuador, the wayusa upina begins before dawn, once around three or four in the morning: the guayusa is heated over the fire, drunk together, the elders talk, and the night's dreams are interpreted to decide the day, above all the hunt. A 2026 study notes that dream interpretation has become rare there (Espinosa Andrade & Vásquez-Castillo 2026). Among the Runa of Ávila, people wake in the night for a gourd of guayusa, and dreams spill over into waking life (Kohn 2013). Among the Jivaro, guayusa gives "little dreams" in which you see whether the hunt will go well (Rätsch 2005, p. 289, after Karsten 1935). Prepared leaves were found in a healer's tomb at Niño Korin, Bolivia, radiocarbon-dated to the year 355 (Rätsch 2005, p. 287).

◇ The studies

Guayusa is a caffeinated drink: up to 75.7 mg of caffeine per gram of dried leaf in the richest sample measured (Negrin et al. 2019, cited by Noriega et al. 2025), with a little theobromine. No study has measured its effect on dreams.

Research on guayusa has looked mostly at her antioxidant profile, measured in vitro, and at her safety: in toxicology tests the oral LD50 exceeds 5,000 mg/kg (Kapp 2016). Many drinkers describe a long, even wakefulness. These observations concern markers and perceptions and prove no medical effect; her first action is that of any caffeinated drink.

● Our dreamers

Of 91 reviews published on INFUSE, 4 tell of a night (read one by one in September 2026): 2 speak of more vivid dreams, one of better recall, one of symbolic animals.

"I experience symbolic animals and awareness in dreams, guayusa gives powerful energy I recommend only to take in moring." — Samonyai

☾ The House

Powered by the Jaguar Spirit, its Feline, Wild Jungle essence is infused with Playfulness, Sensuality, and Audacity! The Kichwa people describe the effects of Guayusa as making them feel "Runa", translating as "Fully Alive". And it carries its lucidity into your dreams: gentler sleep, memorable dreams, easier mornings.

Lineage and long history

The oldest trace is archaeological. In a tomb of the Tiwanaku period at Niño Korin, in Bolivia, carefully prepared guayusa leaves lay among the equipment of a healer. Richard Evans Schultes identified them — "Ilex guayusa from 500 A.D. to the present" (Wassén 1972). The plant does not grow there: her presence in the tomb speaks of a sacred trade over hundreds of kilometres, between the Amazon and the Andes.

In writing, the Jesuit Juan Lorenzo Lucero reported in 1683 the daily drinking of guayusa among the peoples then called Jivaros. The Jesuits went on to sell it in Quito as a remedy for venereal disease (Dueñas et al. 2016). In 1857, the British botanist Richard Spruce described cultivated guayusa near Baños, in Ecuador.

The wayusa upina: talking about dreams before dawn

Among the Amazonian Kichwa of Ecuador and northern Peru, guayusa is wayusa, and the central rite is the *wayusa upina*, "drinking the guayusa". People rise long before dawn — in the old days between three and four in the morning — prepare guayusa over the fire, and drink it while the elders speak. The dreams of the night are shared and interpreted, and the day is planned from them, above all the hunt (Espinosa Andrade & Vásquez-Castillo 2026, PLoS One). Hunters say guayusa helps them dream, so that by reading those dreams they can foresee the hunt (Bennett & Alarcón 2015).

The anthropologist Eduardo Kohn, who lived with the Runa of Ávila, describes people waking in the night for a gourd of guayusa, and a fine grammar of dream reading: the dreams of dogs are read literally, those of humans as metaphors (How Forests Think, 2013).

The same 2026 study adds an honest nuance: dream interpretation over guayusa has become rare in daily life; the rite lives on at community gatherings. Guayusa's link with dreams is therefore social before it is pharmacological. She is a stimulant; she wakes you so you can speak of the night. Some of our dreamers also write to us about more vivid, more memorable dreams.

Among the Achuar, guayusa — wayus — is drunk copiously before dawn, followed by a deliberate purge, a learned bodily practice of the rite (Noriega et al. 2025). The English name "night watchman" comes from this long vigilance. And guayusa carries a legend we keep as a legend: in Ecuador, it is said that when you offer guayusa to someone you love, they will always come back, however far the journey takes them.

In recent years, guayusa has reached the world partly through Kichwa cooperatives and chakra agroforestry, small forest gardens where she grows beside cacao and bananas. She is a plant of alliance between a people and a tree.

Safety notes

Guayusa is a caffeinated plant: her first effect is to wake you and keep you awake, so she belongs to the morning and the day. If you are sensitive to caffeine, anxious, or have high blood pressure or a heart condition, approach her as you would a strong coffee. Limit her strongly, or avoid her, during pregnancy and breastfeeding; she is not recommended for children. The Achuar describe the signs of too strong a dose — severe headache, bloodshot eyes, unsettling sensations — and deliberately avoid the wild plants richest in caffeine: reasonable amounts are the rule. If in doubt, a health professional comes before the plant.

Sources: Wassén S.H. 1972 (Niño Korin) · Espinosa Andrade & Vásquez-Castillo 2026, PLoS One · Noriega P. et al. 2025, Molecules · Dueñas J.F. et al. 2016, Economic Botany 70:85-91 · Kohn E. 2013, How Forests Think · Rätsch C., The Encyclopedia of Psychoactive Plants.*

Sources for the four voices: Espinosa Andrade & Vásquez-Castillo 2026, PLoS One (PMID 42228731) · Kohn E. 2013, How Forests Think, University of California Press · Rätsch C. 2005, The Encyclopedia of Psychoactive Plants, Park Street Press · Noriega P. et al. 2025, Molecules (PMID 40649351) · our customers' reviews.