Product analysis
Guarana 1 g supplies a plant ingredient associated with alertness, but its unresolved caffeine content means the stimulant effect cannot be predicted.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality20
The guarana preparation is unspecified, making its quality difficult to compare. The plant name alone does not identify a standardized extract.
Ingredient Transparency63
The guarana amount is disclosed, making the botanical serving visible. Its preparation and caffeine content remain unclear, so the plant quantity does not reveal the stimulant dose.
Value For Money40
Value for money cannot be established confidently for guarana. A reliable comparison for the amount of caffeine or a standardized extract is unavailable.
Customer Satisfaction75
Customer ratings are generally positive across several hundred reviews. The feedback gives a useful satisfaction picture without establishing alertness or cognitive effects.
Product Focus74
The formula centers on guarana for energy and attention-related aims. Unknown caffeine content and preparation prevent a predictable alertness effect from being assigned to the serving.
- Format
Powder - Container
- 100 Gram(s)
- Per serving
- $0.15
- Customer rating
- 4.7 · 295 ratings
Goals
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.
- 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.