Guarana 1000 mg

Guarana 1000 mg

Nutricost4.7 (270 ratings)
Format:Capsule Quantity: 150 Capsule(s) · 75 servings
Goals
$14.95 $0.19 per serving

Product analysis

50 out of 100

Guarana 1000 mg provides caffeine that can increase short-term alertness and reduce sleepiness.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality20

The guarana preparation is unspecified, leaving its botanical quality uncertain. Benefits from a particular standardized extract cannot automatically be expected from this preparation.

Ingredient Transparency63

The guarana amount is disclosed, and caffeine is separately declared. The botanical preparation is unspecified, limiting detailed comparison with other guarana supplements.

Value For Money40

The available information does not support a reliable value comparison. Guarana’s total weight alone does not establish good value for its effects.

Customer Satisfaction74

Customer ratings are very positive across a few hundred reviews. They provide some insight into satisfaction, without confirming lasting energy or cognitive benefits.

Product Focus83

Caffeine supports short-term alertness and attention, rather than reliably improving memory or learning. The declared serving raises concern about jitteriness and anxiety without a demonstrated extra attention benefit.

Format
Capsule
Container
150 Capsule(s)
Per serving
$0.19
Customer rating
4.7 · 270 ratings
Report analysis

Goals

Energy
Impact
Highest effect
A+ Ingredient FitC PathwaysA+ EvidenceA+ Formulation Logic

Caffeine from guarana can increase short-term alertness and reduce sleepiness. The explicitly declared 220 mg per serving supports this role without estimating caffeine from the guarana mass. Guarana research used a particular standardized extract, so its independent benefit cannot be transferred confidently to this preparation. The supplied evidence does not establish broader exercise or lasting fatigue benefits.

How this product is rated for Energy

Ingredient fit97

The relevant ingredients are focused on this goal, although the product is linked to other uses. The declared amounts provide full amount support in the saved findings; this does not establish additional benefit above nutritional adequacy.
Goal fit
The relevant ingredients are focused on this goal, although the product is linked to other uses.
Dose adequacy
The declared amounts provide full amount support in the saved findings; this does not establish additional benefit above nutritional adequacy.

Pathways60

The strongest covered route is alertness, led by caffeine.
Depth
The strongest covered route is alertness, led by caffeine.
Breadth
Coverage is concentrated in one route, rather than extending across several aspects of energy.

Evidence100

Caffeine provides the strongest evidence contribution here, with benefits limited to the relevant preparation or population.
Evidence strength
Caffeine provides the strongest evidence contribution here, with benefits limited to the relevant preparation or population.
Studied preparation
The saved findings recognize the credited preparations, while the supplied evidence retains its preparation and population limits.

Formulation logic100

The credited ingredients can stand alone in the saved findings, with no identified opposing combination.
Partner coverage
The relevant ingredients do not require an additional partner in the saved findings; no extra combination benefit is established.
Conflicts
No opposing ingredient combination was identified in the evaluated conflict checks.
Effective doses
The ingredients counted in the saved findings have meaningful amount support; this is distinct from proven fatigue-treatment doses.
Study evidence
Caffeine Supportive 68 studies
Guarana No effect 8 studies
Cognitive Support
Impact
High effect
A+ Ingredient FitC PathwaysB EvidenceA Formulation Logic

Declared caffeine can support vigilance and sustained attention, without consistent benefits for memory or learning. The 220 mg per two-capsule serving exceeds the supplied 200 mg conflict threshold, adding concern about jitteriness and anxiety without further attention benefit. Guarana is the caffeine source, but its botanical mass does not establish an additional stimulant contribution, and habitual caffeine use can reduce the response.

How this product is rated for Cognitive Support

Ingredient fit97

The relevant ingredients keep the formula focused on cognition, though its uses extend across other goals. Declared amounts receive full recognition in the saved comparison; that does not establish benefit beyond the ingredient’s specific evidence.
Goal fit
The relevant ingredients keep the formula focused on cognition, though its uses extend across other goals.
Dose adequacy
Declared amounts receive full recognition in the saved comparison; that does not establish benefit beyond the ingredient’s specific evidence.

Pathways60

The strongest represented mechanism is adenosine-blocking alertness, within the limits of the relevant ingredients’ evidence. Support is concentrated in one mechanism rather than spread widely across memory, attention and related functions.
Depth
The strongest represented mechanism is adenosine-blocking alertness, within the limits of the relevant ingredients’ evidence.
Breadth
Support is concentrated in one mechanism rather than spread widely across memory, attention and related functions.

Evidence75

Guarana leads the saved evidence finding, while its population and outcome limitations still apply. The saved finding accepts the relevant preparations for comparison; this does not remove limitations in the cognitive evidence.
Evidence strength
Guarana leads the saved evidence finding, while its population and outcome limitations still apply.
Studied preparation
The saved finding accepts the relevant preparations for comparison; this does not remove limitations in the cognitive evidence.

Formulation logic93

No required ingredient partner is missing from the saved findings. The caffeine serving exceeds 200 mg, bringing concern about jitteriness and anxiety without further attention benefit. The included ingredients pass the minimum amount comparison, which is not proof that each improves cognition.
Partner coverage
No required ingredient partner is missing from the saved findings.
Conflicts
The caffeine serving exceeds 200 mg, bringing concern about jitteriness and anxiety without further attention benefit.
Effective doses
The included ingredients pass the minimum amount comparison, which is not proof that each improves cognition.
Study evidence
Guarana Supportive 11 studies

Ingredients

IngredientAmount per servingScore
Guarana
1000 mg 70
Gluten Free Adults 18–50 Vegetarian
Report overview
Guarana · 1000 mg OverallScore70
D- Composition And Label DisclosureA+ Composition And Label Disclosure
The serving provides 1,000 mg of guarana and a recorded 220 mg of caffeine from it. The saved facts give no preparation ratio or marker percentage.
How this ingredient is rated

Composition and Label Disclosure40

Guarana is identified, but no preparation ratio or marker percentage is recorded.
Marker and Preparation Disclosure
No ratio or marker percentage is recorded for the guarana.

Composition and Label Disclosure100

The saved facts give the caffeine yield from guarana in milligrams.
Amount and Label Disclosure
The recorded guarana caffeine yield is 220 mg per serving.

Commercial Price and Usability

No ingredient-specific price assessment is available.
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Cognitive effects of guarana supplementation with maximal intensity cycling.
    Gurney T; Bradley N; Izquierdo D; Ronca F · The British journal of nutrition · 2023
    Randomized trial25 participantsCognitive Support forGuarana
  2. Cognitive Performance Enhancement Induced by Caffeine, Carbohydrate and Guarana Mouth Rinsing during Submaximal Exercise.
    Pomportes L; Brisswalter J; Casini L; Hays A; Davranche K · Nutrients · 2018
    Randomized trial24 participantsCognitive Support forGuarana
  3. Improved cognitive performance in human volunteers following administration of guarana (Paullinia cupana) extract: comparison and interaction with Panax ginseng.
    Kennedy DO; Haskell CF; Wesnes KA; Scholey AB · Pharmacology, biochemistry, and behavior · 2005
    Non-randomized trial28 participantsCognitive Support forGuarana
  4. The effect of plant active substances on cognitive function in healthy older adults: a systematic review and network meta-analysis of randomized controlled trials.
    Feng X; Fan S; Wei F · Frontiers in pharmacology · 2026
    Meta-analysis1,861 participants25 studies pooledCognitive Support forGuarana
  5. Effect of Guarana (Paullinia cupana) on Cognitive Performance: A Systematic Review and Meta-Analysis.
    Hack B; Penna EM; Talik T; Chandrashekhar R; Millard-Stafford M · Nutrients · 2023
    Meta-analysis328 participants8 studies pooledCognitive Support forGuarana
  6. Cognitive and mood improvements of caffeine in habitual consumers and habitual non-consumers of caffeine.
    Haskell CF; Kennedy DO; Wesnes KA; Scholey AB · Psychopharmacology · 2005
    Randomized trial48 participantsEnergy forCaffeine
  7. Caffeine-containing energy drink improves physical performance of elite rugby players during a simulated match.
    Del Coso J; Ramírez JA; Muñoz G; Portillo J; Gonzalez-Millán C; Muñoz V; Barbero-Álvarez JC; Muñoz-Guerra J · Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme · 2016
    Randomized trial26 participantsEnergy forCaffeine
  8. Differential cognitive effects of energy drink ingredients: caffeine, taurine, and glucose.
    Giles GE; Mahoney CR; Brunyé TT; Gardony AL; Taylor HA; Kanarek RB · Pharmacology, biochemistry, and behavior · 2013
    Randomized trial48 participantsEnergy forCaffeine
  9. Does Single or Combined Caffeine and Taurine Supplementation Improve Athletic and Cognitive Performance without Affecting Fatigue Level in Elite Boxers? A Double-Blind, Placebo-Controlled Study.
    Ozan M; Buzdagli Y; Eyipinar CD; Baygutalp NK; Yüce N; Oget F; Kan E; Baygutalp F · Nutrients · 2022
    Randomized trial20 participantsEnergy forCaffeine
  10. Trait Energy and Fatigue Modify the Effects of Caffeine on Mood, Cognitive and Fine-Motor Task Performance: A Post-Hoc Study.
    Fuller DT; Smith ML; Boolani A · Nutrients · 2021
    Randomized trialEnergy forCaffeine
  11. Dietary supplements and fatigue in patients with breast cancer: a systematic review.
    Pereira PTVT; Reis AD; Diniz RR; Lima FA; Leite RD; da Silva MCP; Guerra RNM; de Moraes Vieira ÉB; Garcia JBS · Breast cancer research and treatment · 2019
    Systematic review932 participants8 studies pooledEnergy forGuarana
  12. Purified dry extract of Paullinia cupana (guaraná) (PC-18) for chemotherapy-related fatigue in patients with solid tumors: an early discontinuation study.
    del Giglio AB; Cubero Dde I; Lerner TG; Guariento RT; de Azevedo RG; Paiva H; Goldman C; Carelli B; Cruz FM; Schindler F; Pianowski L; de Matos LL; del Giglio A · Journal of dietary supplements · 2014
    Randomized trial40 participantsEnergy forGuarana
  13. Placebo-Controlled, Double-Blind, Randomized Study of a Dry Guarana Extract in Patients with Head and Neck Tumors Undergoing Chemoradiotherapy: Effects on Fatigue and Quality of Life.
    Martins SPDS; Ferreira CL; Del Giglio A · Journal of dietary supplements · 2019
    Randomized trial60 participantsEnergy forGuarana
  14. Effects of Acute Guarana (Paullinia cupana) Ingestion on Mental Performance and Vagal Modulation Compared to a Low Dose of Caffeine.
    Talik TN; Penna EM; Hack BP; Harp A; Millard-Stafford M · Nutrients · 2024
    Randomized trial20 participantsEnergy forGuarana
  15. Effectiveness of guaraná (Paullinia cupana) for postradiation fatigue and depression: results of a pilot double-blind randomized study.
    da Costa Miranda V; Trufelli DC; Santos J; Campos MP; Nobuo M; da Costa Miranda M; Schlinder F; Riechelmann R; del Giglio A · Journal of alternative and complementary medicine (New York, N.Y.) · 2009
    Randomized trial36 participantsEnergy forGuarana