Mood over time
How did participants rate their mood after 60 and 120 minutes? Explore the published measurements and their range.
Your drink. Your LIMITLESS moment.
Stir LIMITLESS Powder into water, juice or a smoothie to mix your own caffeinated drink. This water-soluble guayusa extract is concentrated, unlike ground guayusa leaf. The included scoop holds about 0.25 g; use no more than 0.5 g per serving and follow the dosage instructions.
Choose your option & buy„Mir schmeckt es super ohne Zucker“
Personal customer experience · Judge.me · Original excerpt · Original in German
Guayusa extractIn powder formWater-solubleMixes with hot or cold drinksLIMITLESS Powder at a glance
| Ingredients | 100% Guayusa extract |
|---|---|
| Origin | Guayusa leaves from Ecuador |
| Preparation | Dissolve 0.5 g in 400 ml of cold or warm water |
| Format | 30 g · water-soluble extract powder |
| Cost per serving · example | €0.83 EUR |
30 g ÷ 0.5 g = 60 servings. This is an example serving size; how much you use depends on your preparation.
Powdered guayusa extract
LIMITLESS Powder
Our Guayusa extract is a unique concentrate made from 100% Guayusa and is almost 100% water-soluble.
Its flavour comes very close to original Guayusa tea. With 22% caffeine and 30% antioxidants, our Guayusa extract powder is the world’s strongest natural extract!
Health-related properties
Effects of guayusa
Natural caffeine. Find your focus.
LIMITLESS Powder brings caffeine-containing Guayusa leaves into your everyday routine as a concentrated powder. Caffeine blocks adenosine receptors and can therefore reduce tiredness while supporting alertness and attention. Mix the extract into your favourite drink – no need to brew a pot of tea first.
More than a single ingredient
Alongside caffeine, Guayusa contains antioxidant plant compounds, especially chlorogenic acids. This plant profile is what makes Guayusa extracts interesting to researchers. L-theanine is often discussed in connection with caffeine; however, the extract studies below examine each complete product and do not isolate an effect of L-theanine.
Your serving makes a difference
LIMITLESS Powder is a concentrated extract, not the same as ground Guayusa leaves. Measure small portions carefully and follow the dosage instructions on your pack. Remember to count coffee, tea and other caffeine sources throughout the day.
Want to explore further? Our blog about L-theanine and caffeine and the Guayusa Wiki: Antioxidants offer background on the ingredients and research.
In three steps
Preparation
- 1. Prepare your drink
Prepare 400 ml of cold or warm water.
- 2. Measure
Add 0.5 g of LIMITLESS Powder.
- 3. Stir & enjoy
Stir well. Your drink is ready to enjoy.
0.5 g is enough for one 400 ml glass. We do not recommend more than 1.5 g per day.
Guayusa extract powder can be dissolved in cold or warm water. It is also suitable for shakes, smoothies and baking.
There are no limits to how you can use it.
Research made accessible
Research findings
Attention & focus
The research looks at both self-reported focus and computer-based tasks. These offer different perspectives on mental performance.
Working memory
The N-back test measured speed and accuracy when processing information.
Faster responses
The Go/No-go test shows how quickly participants respond to a signal and how reliably they withhold responses to other signals.
Gaming & restlessness
A direct comparison with synthetic caffeine and a placebo tracks the results over four hours – along with the limits of what they can tell us.
Guayusa compared
Another study looks at the adrenaline response to the same amount of caffeine from different sources.
Mood scale · 60 and 120 minutes
Mood improvement over time
After taking the Guayusa extract used in the study, participants rated their mood more positively than before taking it. Explore the changes after 60 and 120 minutes and select the time points for more details.
Mood improvement · Change on the mood scale (cm)
Time after intake
Guayusa extractBaseline (reference, not placebo)
0 = baseline. Dashed lines connect the reported changes; intermediate times were not measured here.
Explore the data points with your mouse, touch or Tab key.
Guayusa extract · 120 minutes: 0.67 cm · 0.14 to 1.2 (95% CI) · p 0.010
Points = reported change · Fine lines = 95% confidence interval
+0.30 cm
After one hour
On average, mood was rated more positively than before intake.
+0.67 cm
After two hours
The rating was still above baseline after 120 minutes.
What was measured?
Participants rated their mood on a visual analogue scale (VAS). The comparison is with their own baseline.
40 adults · Randomised, double-blind crossover study · 650 mg of the guayusa extract studied · Comparison within the extract condition, not against placebo.
La Monica et al. (2023), section 3.4 ↗Measurements and study context
The publication reports measurements before intake and after 60 and 120 minutes. Positive values indicate a better self-reported mood. Points show mean differences; fine lines show their 95% confidence intervals.
| Study condition | Time point | Measurement | Variability / interval |
|---|---|---|---|
| Guayusa extract | 60 minutes | 0.3 cm | 0.02 to 0.57 (95% CI) · p 0.036 |
| Guayusa extract | 120 minutes | 0.67 cm | 0.14 to 1.2 (95% CI) · p 0.010 |
The studies investigated the guayusa extracts specified in each case. The original findings are shown here; LIMITLESS Powder and Drops were not tested as finished GUYA products in these studies.
Working memory · N-back test
Improved reaction time
After 120 minutes, participants needed an average of 34.5 milliseconds less per point on the N-back test than at the start. Select the measurement to see the corresponding interval.
Reaction time in the N-back test · Change from baseline (ms)
Time after intake
Guayusa extractBaseline (reference, not placebo)
Downwards = less time per point. The dashed connection shows the difference from baseline, not a measured trajectory between time points.
Explore the data points with your mouse, touch or Tab key.
Guayusa extract · 120 minutes: −34.5 ms · −51.4 to −17.6 (95% CI) · p < 0.001
Points = reported change · Fine lines = 95% confidence interval
34.5 ms
Less time per point
This was the mean difference from the beginning of the N-back test.
120 min
After two hours
The displayed difference was measured at this time point.
The test behind the result
The N-back test assesses working memory and responses together. It compares the time needed per point scored.
40 adults · 650 mg of the guayusa extract studied · N-back: time per point scored · Comparison after 120 minutes with the same participants’ baseline.
La Monica et al. (2023), section 3.3 ↗Measurements and study context
34.5 ms less time per point in the working-memory test. This is not a general improvement in every type of reaction time. The chart shows the published difference and its 95% confidence interval.
| Study condition | Time point | Measurement | Variability / interval |
|---|---|---|---|
| Guayusa extract | 120 minutes | −34.5 ms | −51.4 to −17.6 (95% CI) · p < 0.001 |
The studies investigated the guayusa extracts specified in each case. The original findings are shown here; LIMITLESS Powder and Drops were not tested as finished GUYA products in these studies.
Go/No-go test, not overall decision quality
Responding faster to signals
Fast reactions and accurate reactions are two different things. This chart shows the time saved on Go signals after 60 and 120 minutes.
Faster responses to Go signals · Time saved (ms)
Time after intake
Guayusa extractBaseline (reference, not placebo)
Upwards = more time saved. Dashed lines connect the reported changes from the participants’ own baseline.
Explore the data points with your mouse, touch or Tab key.
Guayusa extract · 120 minutes: 14.6 ms · 4.21 to 24.9 (95% CI) · p 0.004
Points = reported change · Fine lines = 95% confidence interval
10.6 ms
After one hour
Mean reaction time to Go signals decreased by this amount.
14.6 ms
After two hours
The time saved compared with baseline was greater after 120 minutes.
Speed and accuracy
The chart shows response speed. No-go accuracy fell after 120 minutes compared with 60 minutes — both aspects are part of the result.
40 adults · 650 mg of the guayusa extract studied · Go/No-go test · Comparison within the extract condition, not against placebo.
La Monica et al. (2023), section 3.1 ↗Measurements and study context
The study measured reaction time to Go signals, not the quality of everyday decisions. Go responses became faster; however, No-go accuracy fell after 120 minutes compared with 60 minutes. Both speed and accuracy are part of the findings.
| Study condition | Time point | Measurement | Variability / interval |
|---|---|---|---|
| Guayusa extract | 60 minutes | 10.6 ms | 1.8 to 19.3 (95% CI) · p 0.015 |
| Guayusa extract | 120 minutes | 14.6 ms | 4.21 to 24.9 (95% CI) · p 0.004 |
The studies investigated the guayusa extracts specified in each case. The original findings are shown here; LIMITLESS Powder and Drops were not tested as finished GUYA products in these studies.
Guayusa extract, caffeine and placebo
Jitteriness compared in the study
With Guayusa extract, the average rating of restlessness remained unchanged after one hour. Compare the full pattern over time rather than just one selected percentage.
Jitteriness / inner restlessness · Self-rating from 0 to 100
Time after intake
Lower scores = less subjective restlessness. The lines connect the five measured time points.
Explore the data points with your mouse, touch or Tab key.
Guayusa extract · 1 hour: 30 /100 · ± 30 (SD)
Points = means · Selected point: ± standard deviation (SD)
30 → 30
Guayusa after one hour
The mean remained unchanged from baseline.
26 → 35
Caffeine after one hour
With synthetic caffeine, the mean rating initially increased.
Putting the comparison in context
The difference between guayusa and synthetic caffeine was not statistically significant. Subjective restlessness was measured.
49 active gamers (47 men, 2 women) · Crossover study · Guayusa extract and synthetic caffeine each providing 270 mg caffeine · 4 hours of gaming.
Bloomer et al. (2022), table 3 ↗Measurements and study context
After one hour, the guayusa mean remained at 30; with synthetic caffeine, it rose from 26 to 35. The difference between guayusa and caffeine was not statistically significant. These scores describe subjective restlessness, not objectively measured hand movements. Lines connect measured time points only; variability (± SD) is shown in the data table and when selecting a point.
| Study condition | Time point | Measurement | Variability / interval |
|---|---|---|---|
| Guayusa extract | 0 hours | 30 /100 | ± 29 (SD) |
| Guayusa extract | 1 hour | 30 /100 | ± 30 (SD) |
| Guayusa extract | 2 hours | 29 /100 | ± 28 (SD) |
| Guayusa extract | 3 hours | 23 /100 | ± 23 (SD) |
| Guayusa extract | 4 hours | 26 /100 | ± 24 (SD) |
| Synthetic caffeine | 0 hours | 26 /100 | ± 27 (SD) |
| Synthetic caffeine | 1 hour | 35 /100 | ± 28 (SD) |
| Synthetic caffeine | 2 hours | 27 /100 | ± 25 (SD) |
| Synthetic caffeine | 3 hours | 30 /100 | ± 28 (SD) |
| Synthetic caffeine | 4 hours | 28 /100 | ± 25 (SD) |
| Placebo | 0 hours | 23 /100 | ± 25 (SD) |
| Placebo | 1 hour | 24 /100 | ± 28 (SD) |
| Placebo | 2 hours | 25 /100 | ± 25 (SD) |
| Placebo | 3 hours | 25 /100 | ± 25 (SD) |
| Placebo | 4 hours | 20 /100 | ± 23 (SD) |
The studies investigated the guayusa extracts specified in each case. The original findings are shown here; LIMITLESS Powder and Drops were not tested as finished GUYA products in these studies.
Equal caffeine doses · Epinephrine response
Guayusa extract vs. synthetic caffeine
Caffeine is the same molecule; what accompanies it in the plant differs. Among other things, a small crossover study compared the adrenaline response to the same amount of caffeine.
Guayusa extract vs. synthetic caffeine · Urinary epinephrine (µg/gCr)
Time after intake
The comparison covers baseline and 60 minutes. The lines connect these two measurement points, not a continuously measured trajectory.
Explore the data points with your mouse, touch or Tab key.
Guayusa leaf extract · 60 minutes: 5.49 µg/gCr · ± 2.68 (SD)
Points = means · Selected point: ± standard deviation (SD)
200 mg
The same caffeine dose
Both conditions provided the same amount of caffeine — from guayusa leaf extract or a synthetic source.
4.99 → 5.49
Guayusa leaf extract
Mean epinephrine levels before intake and after 60 minutes (µg/gCr).
4.35 → 7.13
Synthetic caffeine
The mean increase was greater here. Difference between changes: p = 0.040.
12 healthy adult men · Double-blind crossover study · 200 mg caffeine from guayusa leaf extract or synthetic caffeine in each condition.
Krieger et al. (2016), table 5 ↗Measurements and study context
The rise in epinephrine was smaller with the guayusa extract studied (difference between changes: p = 0.040). Urinary epinephrine was measured, not focus, mood or an energy crash. Points show means; the selected point shows ± standard deviation. SD is not a confidence interval.
| Study condition | Time point | Measurement | Variability / interval |
|---|---|---|---|
| Guayusa leaf extract | Before intake | 4.99 µg/gCr | ± 3.24 (SD) |
| Guayusa leaf extract | 60 minutes | 5.49 µg/gCr | ± 2.68 (SD) |
| Synthetic caffeine | Before intake | 4.35 µg/gCr | ± 3.55 (SD) |
| Synthetic caffeine | 60 minutes | 7.13 µg/gCr | ± 4.02 (SD) |
The studies investigated the guayusa extracts specified in each case. The original findings are shown here; LIMITLESS Powder and Drops were not tested as finished GUYA products in these studies.
Preparation and serving ideas
Does LIMITLESS Powder fit your day?
Extract, not leaf powder.
LIMITLESS Powder is concentrated Guayusa extract for mixing.
Your drink, your moment.
Dissolve 0.5 g in 400 ml of cold or warm water.
Try it in a shake.
Discover more ways to prepare your extract.
The story behind your GUYA
Get to know LIMITLESS Powder
Our LIMITLESS Powder is named after the remarkable biohacking pill from the film of the same name, "Limitless" (released in German as "Ohne Limit").
It is a highly concentrated natural energy source made from 100% Guayusa leaves, with no additives, drying agents or anti-caking agents. It is intended for intense, long-lasting energy without the typical side effects of coffee and energy drinks.
Our 100% Guayusa concentrate is unique on the market.
With 22% Guayusa caffeine and 30% valuable antioxidants such as lutein, our natural powdered extract competes with chemical caffeine boosters. Few people know how important and effective antioxidants are in relation to an energy boost, focus and avoiding “brain fog”.
Our LIMITLESS Powder is 99.89% water-soluble, so it can be consumed as an energiser in many different ways. We recommend taking no more than 0.5 g per serving. One pack is therefore enough for 60 servings, or about 2 months.
For research-based information about Guayusa, visit the Guayusa Wiki and the Detox-Tee Wiki.
Mix LIMITLESS Powder into smoothies, protein shakes, porridge, tea, hot or cold water, or juice; you can also make your own energy bars with nuts and oats.
Its flavour is mild and very close to the original Guayusa PURE.
You can be sure we are more than just resellers of ingredients. On our YouTube channel you’ll find short documentaries and vlogs featuring our farmers in Ecuador. GUYA founder Sebastian shows you transparently how we work together and how your Guayusa is produced.
P.S.: A measuring spoon for approx. 0.25 g is included!
NOTE: The best-before date of this product is 30.01.27. A best-before date is not a use-by or expiry date: it describes the period for which the full quality of an unopened, correctly stored pack must be guaranteed by law. The light-, moisture- and odour-protecting packaging supports the preservation of quality. That is why our products keep the same quality for at least two years beyond the best-before date. In addition, our extract is tested for a minimum shelf life of five years from production — in Germany, however, we may initially only state two years. Selling beyond that is legally permitted as long as the quality is guaranteed.
In our YouTube videos
Scroll sideways to explore all videos.
GUAYUSA EXTRACT: why Dave Asprey loves this superfood!
Click to load the YouTube player. Watch on YouTube
What the film Limitless has in common with guayusa – One Limit
Click to load the YouTube player. Watch on YouTubeIn our blog articles
Limitless Powder vs. the competition: the ultimate comparison
Compare LIMITLESS Guayusa extract with Red Bull, coffee and other options for focus, energy and performance, including how energy crashes...
Read article
Guayusa extract: the caffeine paradox? Energy without jitters
Can guayusa provide 6+ hours of energy without jitters or a crash? Explore the caffeine paradox and the evidence behind...
Read article
Limitless Powder biohacking recipes: a guide to natural energy & focus
Discover more than 20 creative biohacking recipes with GUYA Limitless Powder, from energy smoothies to warm drinks, for naturally optimising...
Read articleTransparency & product overview
H
Zubereitung: Heiß aufgegossen
Geschmack: Mir schmeckt es super ohne Zucker
Unglaubliche Wirkung
Ob ich es im Tee verwende oder ein kleines löffelchen im espresso verrühre ich bin sofort startklar ob zum kochen mit meinen Kindern oder beim Sport ich kann die Wirkung kaum beschreiben power power power ob körperlich oder geistig einfach nur klasssssse
T
Das Guayusa-Powder ist für mich ein ausgesprochen zuverlässiger Wachmacher. Nach einer zu kurzen Nacht funktioniert es wie eine optimale Notlösung: Es macht deutlich wacher, steigert die Konzentration und hält diesen Effekt über viele Stunden stabil.
M
Sehr angenehmer Koffeinkick.
Leichter eigengeschmack aber in z.B. kaltem Tee nicht störend
M
Ich bin sehr begeistert vom Limitless Pulver, da man es einfach und schnell in seinen Shake oder auch direkt unter die Zunge löffeln kann, mit Wasser spülen und die Wirkung genießen. Guya gibt einem einen entspannten aber zielgerichteten Fokus um richtig was geschafft zu bekommen!
S
Ich hatte mir unter dem Produkt mehr versprochen. Die Wirkung hält nicht so lange an wie gedacht und tritt auch nicht so schnell ein, wie beim Tee. Seit längerem schon trinke ich den Tee und dieser hat eine längere Wirkung. Für mich ist das Produkt mit seiner Wirkung die es bei mir auslöst einfach zu teuer.
Hey Sandy,
das tut mir echt leid. Das Limitless Power hat aus meienr erfahrung und auch den Studien eine wirklich sehr intensive und lange Wirkung. Sehr komisch, dass es bei dir nicht so ist :(. Hast du es wie beschrieben dosiert? Dennoch freue ich mich natürlich, dass du den reinen Guayusa Tee dagegen so schätzt :).
G
Als Koffein-Junkie war ich schon lange auf der Suche nach einer richtig guten Kaffeealternative, ohne unnötig meinen Cholesterinspiegel hochzutreiben. Guayusatee war schon ne mega Alternative. Aber manchmal muss es schnell gehen und ich will exakt dosieren können. Als Tee, im Saft, in der Buttermilch…
M
Absolutes Top.
Wachmacher wie als auch gibt Energie auf einer sehr gesunden Art.
Danke Nochmal :)
M
Beeindruckend. Als Mitglied der "Fan-Gemeinde" von Guayusa Tee hatte ich genug Vertrauen, das Limitless-Powder zu bestellen und habe es nicht bereut! Diese kleine Investition lohnt sich. Wenn lange Tage schon sehr früh starten, hilft mir das Pulver auf eine sehr ruhige Weise wach und konzentriert zu sein. Ich bin jemand, der Kaffee sehr schlecht verträgt, deshalb weiß ich die totale Abwesenheit der kafeetypischen.Zittrigkeit umso mehr zu schätzen. Tolles Produkt! 👍🏼
K
Ich habe gewagt mein Sortiment von Guya, um Guyausa Limitless-Powder zu erweitern, denn mein Test dieses Produktes hat mich überzeugt.
Morgens zum aufwachen und klar werden, nachmittags evtl. nochmal zur Auffrischung.
Insgesamt nutze ich die verschiedensten Sorten Guayusa, Teekannen etc. sehr Bewußt mit dem Wissen der Direktvermarktung.
Daaanke lieber Sebastian, dass du so umsichtig bist !
E
In den warmen DARK der zweiten 🍵Tasse die entsprechende Menge LIMITLESS - das ergibt einen ruhigen, ausgleichenden EnergieSCHUB 💪🧘♂️☝️ Kannten wir SOOO noch nicht ☝️🤝
A
Im Job, im Gym, beim Baden, auf den Bergen.
Limitless gibt mir die Energie und Fokussierung, um mich gut und fit zu fühlen. Ich nehme es seit zwei Wochen und erfreue mich an einem sehr guten Körpergefühl, dank diesem Extrakt.
Volle Empfehlung!
A
Sehr angenehm im Geschmack. Das Beste ist jedoch die belebende Wirkung. Kein vergleichbares Pülverchen bislang verkostet. Dazu enorm ergiebig. Bei 30 g sah es echt wenig aus, merkte aber schnell das reicht ne ganze Weile. Top!
L
Bin begeistert🤩 Als Energydrink-Junkie (leider 😅) bin ich schon lange auf der Suche nach einer gesünderen Variante, die ich nun endlich gefunden habe. Nutze morgens und nachmittags jeweils einen Messlöffel als Boost für meinen Matcha. Seitdem habe ich keine Energydrinks mehr getrunken, da die Wirkung viel angenehmer fokussiert und länger anhaltend ist
E
Ich denke, ich muss es schon eine Weile konsumieren!
Von einmal genießen kann ich nicht sagen, ob es mich anturnt oder fitter macht
A
Zubereitung: Heiß aufgegossen
Geschmack: Neben heiß Aufguss mache ich Eistee, die tropischen Sorten schmecken fruchtig. Kaffee trinke ich schwarz ohne weiteren Inhalt. Mittlerweile finde ich den normalen Kaffee exotisch.
Schnelle Lieferung ...
J
Also ich muss schon sagen dieses Pulver ist der Hammer in etwa 10 Minuten fängt es bei mir an zu wirken man ist nicht mehr müde ist voller Tatendrang und die Kreativität hat keine Grenzen einfach nur super.
M
Das gestrichene Messlöffel ist ungefähr 0,17 bis 0.20g.
Ich mische es lauwarmen Tee , Saft..
Mir schmeckt erste Tag wunderbar und wirkt allgemein schon.
A
Produkt ist wie beschrieben und hat die angegeben Inhaltsstoffe.
Leicht wachhaltende Wirkung ist die Folge. Der beigelegte Dosierlöffel ist sehr praktisch.
Bedenkt bitte bei leicht wachhaltende Wirkung die unterschiedliche Wirkweise und Gewöhnung bei verschiedenen Individuen.
H
Der Powder hat bei uns den körperlichen und geistigen Härtetest bestanden: Großer Triumph bei Basketball-Turnier und Staatsexamen!
M
Ich nehme das Limitless Powder jetzt seit ca. zwei Wochen, richtig smooth, angenehmer Drive, kein Crash. Auf der Arbeit merke ich selbst bei weniger Schlaf keinen Durchhänger mehr, das ist echt stark. Ich mache bewusst Pausen (2 Tage an freien Tagen), damit kein Gewöhnungseffekt entsteht, so bleibt die Wirkung klar spürbar. Wichtig: Es ersetzt keinen gesunden Schlaf, 6–8 Stunden sollten drin sein. Für mich bisher eine top Erfahrung.
A
Fokus - Wachheit - Produktivität - Entspannung
A
woOow . ähnlich wie Guarana, nur etwas subtiler und länger anhaltend ...
R
Die Leistungssteigerung ist signifikant und das Produkt verbindet exotischen Geschmack mit universellen Einsatzmöglichkeiten und ist dabei sehr praktisch zu transportieren und proportionieren.