Guayusa (Ilex guayusa) is a small tree that grows in the Ecuadorian rainforest, and whose leaves are rich in naturally-occurring caffeine. Guayusa contains less caffeine per cup than coffee, ...

Krause, T., & Ness, B. (2017) Energizing agroforestry: Ilex guayusa as an additional commodity to diversify Amazonian agroforestry systems. International Journal of Biodiversity Science, ...

Guayusa and lion’s mane are two natural dietary supplements that may have health benefits. Usually taken as a tea made from the leaves, guayusa is a plant in the Ilex (holly) family.

Guayusa isn't technically a “tea,” it's an herb that comes from the holly tree (Ilex guayusa), which has nothing to do with the tea plant Camellia sinensis that gives us black and green tea.

Applied Food Sciences, Inc. (AFS) is pleased to announce it is the exclusive owner of U.S. Patent #9345707, a process patent that covers the production of enriched natural guayusa, ...