Product analysis
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
Goals
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
Goal fit
Dose adequacy
Pathways60
Depth
Breadth
Evidence100
Evidence strength
Studied preparation
Formulation logic100
Partner coverage
Conflicts
Effective doses
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
Goal fit
Dose adequacy
Pathways60
Depth
Breadth
Evidence75
Evidence strength
Studied preparation
Formulation logic93
Partner coverage
Conflicts
Effective doses
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Guarana | 1000 mg |
How this ingredient is rated
Composition and Label Disclosure40
Marker and Preparation Disclosure
Composition and Label Disclosure100
Amount and Label Disclosure
Commercial Price and Usability
Alternative products
Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Cognitive effects of guarana supplementation with maximal intensity cycling.
- Cognitive Performance Enhancement Induced by Caffeine, Carbohydrate and Guarana Mouth Rinsing during Submaximal Exercise.
- Improved cognitive performance in human volunteers following administration of guarana (Paullinia cupana) extract: comparison and interaction with Panax ginseng.
- The effect of plant active substances on cognitive function in healthy older adults: a systematic review and network meta-analysis of randomized controlled trials.
- Effect of Guarana (Paullinia cupana) on Cognitive Performance: A Systematic Review and Meta-Analysis.
- Cognitive and mood improvements of caffeine in habitual consumers and habitual non-consumers of caffeine.
- Caffeine-containing energy drink improves physical performance of elite rugby players during a simulated match.
- Differential cognitive effects of energy drink ingredients: caffeine, taurine, and glucose.
- 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.
- Trait Energy and Fatigue Modify the Effects of Caffeine on Mood, Cognitive and Fine-Motor Task Performance: A Post-Hoc Study.
- Dietary supplements and fatigue in patients with breast cancer: a systematic review.
- Purified dry extract of Paullinia cupana (guaraná) (PC-18) for chemotherapy-related fatigue in patients with solid tumors: an early discontinuation study.
- 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.
- Effects of Acute Guarana (Paullinia cupana) Ingestion on Mental Performance and Vagal Modulation Compared to a Low Dose of Caffeine.
- Effectiveness of guaraná (Paullinia cupana) for postradiation fatigue and depression: results of a pilot double-blind randomized study.