Guayusa (Ilex guayusa): caffeine, evidence and safety
Guayusa, wayusa (Ilex guayusa): the Kichwa dawn tea, what is in the leaf, what four small extract trials found, and where it stands under Australian law.
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Guayusa, wayusa (Ilex guayusa): the Kichwa dawn tea, what is in the leaf, what four small extract trials found, and where it stands under Australian law.