Product analysis
Guarana Energizer 900 mg offers a single-botanical approach to short-term alertness, with effects that depend on the guarana preparation.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality40
Guarana quality cannot be judged confidently from its caffeine-related description. The botanical amount does not identify an equivalent of a particular standardized preparation.
Ingredient Transparency100
The guarana amount and source description are stated. The caffeine-related description does not verify a separate caffeine amount.
Value For Money40
The value of the guarana serving remains uncertain. A reliable price comparison for its active contribution is unavailable.
Customer Satisfaction86
Customer feedback is generally very favorable across a large review history. The ratings describe satisfaction without confirming alertness or cognitive effects.
Product Focus74
A single botanical keeps the focus on short-term alertness and attention. The expected effect remains preparation-dependent, and a separate caffeine exposure is unconfirmed.
- Format
Tablet - Container
- 200 Tablet(s)
- Per serving
- $0.14
- Also available
Guarana Energizer 900 mg$10.15- Customer rating
- 4.7 · 3,063 ratings
Goals
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Guarana Seed Extract (Caffeine) | 900 mg |
How this ingredient is rated
Composition and Label Disclosure100
Marker and Preparation Disclosure
Composition and Label Disclosure70
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.