Guayusa
Ilex guayusa
An Amazonian caffeinated holly leaf used for clean, sustained energy and focus.
Traditional use (indigenous-americas): An Amazonian caffeinated holly leaf used for clean, sustained energy and focus.
An Amazonian caffeinated holly leaf used for clean, sustained energy and focus.
Active constituents are under study; evidence ranges from traditional use to preliminary human trials.
- An Amazonian caffeinated holly leaf used for clean, sustained energy and focus.
Evidence strength: traditional use.
- See the evidence level above
- Contains caffeine: jitteriness, insomnia, raised heart rate/BP; limit in pregnancy.
- Caffeine sensitivity
- Uncontrolled hypertension
Contains caffeine: jitteriness, insomnia, raised heart rate/BP; limit in pregnancy.
May interact with prescription medications — review with a clinician if you take any.
Use caution in pregnancy, breastfeeding, for children, and with chronic disease unless cleared by a clinician.
Choose reputable, tested suppliers; correct identification is essential for wild-harvested plants.