Last verified: 17 days ago
Amatea Guayusa Leaf Extract
Also known as: Ilex guayusa, guayusa, Amatea extract, guayusa leaf extract
Evidence under review. — Not yet rated
Caffeinated Amazonian leaf extract used for energy and focus. Limited clinical research available.
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What it does
Amatea is a branded extract of guayusa (Ilex guayusa), a caffeinated leaf from the Amazon traditionally brewed as a tea by indigenous communities. Like coffee and tea, guayusa naturally contains...
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Evidence quality
Evidence base hasn't been formally rated yet. See research below.
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Clinical dose
No established dose
What the Science Says
Amatea is a branded extract of guayusa (Ilex guayusa), a caffeinated leaf from the Amazon traditionally brewed as a tea by indigenous communities. Like coffee and tea, guayusa naturally contains caffeine and theobromine, which are stimulants that can promote alertness and reduce fatigue. It also contains antioxidants and a small amount of L-theanine, which some believe may smooth out caffeine's stimulant effects — though no clinical trials have confirmed this for guayusa specifically.
What It Doesn't Do
No clinical trials prove it outperforms regular caffeine for energy or focus. Not proven to burn fat on its own. 'Clean energy' marketing is not backed by published research. No evidence it improves athletic performance beyond what caffeine alone would do. Not a substitute for sleep.
Evidence-Based Benefits
Contains natural caffeine that can improve alertness and reduce feelings of fatigue.
Weak EvidenceEffective at: No established dose
Guayusa leaf contains polyphenol antioxidants, similar to green tea.
Weak EvidenceEffective at: No established dose
Absorption & Bioavailability
Unknown — no pharmacokinetic studies available for this extract. Caffeine from plant sources is generally well absorbed orally.
Red Flags to Watch For
- No published clinical trials found in PubMed — all benefits are inferred from its caffeine content or traditional use
- Caffeine content per dose is often undisclosed on product labels, making it hard to know how much stimulant you're actually getting
- May interact with other stimulants or medications — combining with pre-workouts or fat burners raises risk of overstimulation
- Pregnant or breastfeeding individuals should avoid due to unknown caffeine load and lack of safety data
- 'Amatea' is a proprietary brand name — marketing claims may not reflect independent research
Frequently Asked Questions
What does Amatea Guayusa Leaf Extract do?
Caffeinated Amazonian leaf extract used for energy and focus. Limited clinical research available.
What is the effective dose of Amatea Guayusa Leaf Extract?
No established dose
Is Amatea Guayusa Leaf Extract safe?
No published clinical trials found in PubMed — all benefits are inferred from its caffeine content or traditional use
What doesn't Amatea Guayusa Leaf Extract do?
No clinical trials prove it outperforms regular caffeine for energy or focus.
Research Sources
- General knowledge — no PubMed papers were available for this ingredient. Limited published research available.
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-05-25