Sharper. Calmer.
In 30 minutes.
Three plants. One capsule. The flagship of the ZETA stack — and the one you'll feel before the morning ends.
"Just 2 pills. 30 minutes aaaand — I start to be full of energy."
What you'll feel
It works fast.
And it keeps working.
Z-83 isn't a 30-day promise. It's a 30-minute one — and then it does the long, quiet work underneath.
A warm, awake clarity. Shoulders drop. Inner voice quiets. You stop refreshing.
The part that makes people loyal. The lift doesn't end with a thud — it tapers, soft.
Better mood after exercise. Cleaner mornings. Less of the 3pm dip. Your body learns the rhythm.
Biomarkers shift slowly when you show up daily. Z-83 is the keystone of your ecosystem.
Three plants, one capsule
Plants you've never heard of,
doing what they do best.
A South African succulent. An Amazonian tree. Just enough clean caffeine from green coffee beans. Three plants, one small capsule, all working together.
From South Africa
A small, hardy succulent that grows out of cracks in the South African desert. People there have used it for generations to calm the mind without flattening it.
In studies, it gently shifts mood and reaction time — without acting like a stimulant. The no-jitter part starts here.
From the Amazon
A wild caffeinated holly tree from the Amazon. Indigenous communities have brewed its leaves at dawn for centuries — what they call "the awake plant."
It brings polyphenols and antioxidants along with it. So the lift comes with protection.
From organic green coffee beans
Z-83 uses just enough clean, plant-derived caffeine — pulled from organic green coffee beans, no synthetic stuff, no mycotoxins.
It's there to leave you focused, energized, and lit — without overdoing the stimulation. The dose is small, on purpose.
- Take 1–2 capsules daily
- Morning is best — with or without food. Most people feel the lift within 30 minutes.
- Avoid taking after 3pm — caffeine can affect sleep for sensitive folks.
- Do not exceed 3 capsules per day
- 30 capsules per bottle — ~15–30 day supply
Your first capsule
Here's the ritual.
A short clip from David and me on how to take your first Z-83 — and what most people miss in their first week.
VIDEO · KARLI_TYPESOFCAFFEINE.MP4 — Zo + Dr. Karli, caffeine/Z-83 explainer · 1:26
Real reviews · all 5-star
People who have tried it have kept ordering.
Pulled straight from verified buyers. No edits.
For the curious
The meaty stuff — clinical applications, full ingredient breakdown, dosing notes, and the research underneath. For the readers who like to know.
Description
The daily feel-good capsule.
Z-83 is the flagship of the ZETA stack. Three plants — Zembrin (a South African succulent), Amatea Max (an Amazonian holly tree), and a small dose of clean caffeine from organic green coffee beans — packed into the proprietary Focus & Energy Blend.
Most nootropics hide behind 20-ingredient blends so you can't tell what's actually working. We didn't. Three plants. One capsule. Felt fast.
Clinical Applications
- Supports sharper focus and clearer thinking
- Supports steady, jitter-free energy
- Supports calm mood and reduced edge
- Supports daily cognitive performance
- Supports recovery from mental fatigue
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Ingredients
What's in it.
Supplement Facts
Serving size: 1 vegetarian capsule · Servings per bottle: 30
Focus & Energy Proprietary Blend — 270 mg
- Amatea® Max — organic guayusa leaf extract (Ilex guayusa)
- Organic caffeine — from green coffee bean
- Zembrin® — Sceletium tortuosum extract
Other Ingredients
Hypromellose (vegetarian capsule), organic rice extract blend.
Why these forms
Amatea Max is a clinically standardized guayusa extract — not just dried tea leaves. It carries L-theanine analogs and antioxidant polyphenols alongside its natural caffeine.
Zembrin is the patented Sceletium extract with multiple human clinical trials behind it (mood, focus, anxiety markers). Generic Sceletium powders don't have this.
Caffeine from organic green coffee bean keeps the source clean — no synthetic stimulants, no mycotoxins.
Directions & Precautions
How to take it.
Take 1–2 capsules daily, in the morning, with or without food. Most people feel the lift within 30 minutes. Don't take more than 3 a day.
Best Time
Morning. Avoid taking after 3pm — even small doses of caffeine can affect sleep for sensitive folks.
Pairs Well With
- ZETA MULTI — the daily Foundation of vitamins and minerals
- ZETA D+K — the longevity foundation
- ZETA MINOS — strength + recovery on workout days
Precautions
Contains caffeine. If you're sensitive, start with 1 capsule to assess tolerance. Avoid combining with other caffeine sources for your first dose. If pregnant, nursing, under 18, or on medication, consult your healthcare provider before use. Don't exceed 3 capsules in a day.
Research
The research underneath.
A few of the studies behind the two clinically-standardized plants in Z-83. Not a complete bibliography — but the work that shaped the formula.
Supporting Research
The Daily Foundation.
Z-83 is the lift. ZETA MULTI is the floor. One you feel in 30 minutes. The other you'll feel in 30 years. Together they're the foundation of every other thing you do for your body.
DRIVEN BY SCIENCE · BUILT TO PERFORM · MADE TO FEEL
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we take.
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