$16.09 $0.53 per serving
Product analysis
Pure Energy supports short-term alertness, chiefly through caffeine. Theanine and rhodiola add a possible calm-focus angle, but their combination does not establish extra benefit or reliable relief from caffeine jitters.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality41
Rhodiola has a named source and a rosavin description, helping identify the herbal ingredient. Caffeine and theanine lack preparation details, and the rhodiola description does not establish equivalence to specific tested extracts.
Ingredient Transparency75
All listed amounts make the combination easy to compare by quantity. Caffeine and theanine preparations remain unspecified, limiting a more precise comparison.
Value For Money56
The theanine comparison is relatively favorable, while rhodiola is costly for its declared amount. Caffeine falls between these, so value depends on which contribution is most relevant to the buyer.
Customer Satisfaction70
Ratings indicate generally positive satisfaction from a moderate number of responses. They provide some perspective on use without establishing a reliable energy or focus response.
Product Focus65
Short-term alertness is the clearest purpose, with more limited support for stress-related fatigue or calm focus. The many wider uses do not establish sustained productivity or weight-loss effects, and caffeine timing can affect sleep.
- Format
Capsule - Container
- 60 Capsule(s)
- Per serving
- $0.53
- Customer rating
- 4.5 · 324 ratings
Goals
Impact
High effect
Theanine · 160 mgCaffeine · 100 mg
Impact
High effect
Theanine · 160 mgCaffeine · 100 mg
Impact
High effect
Theanine · 160 mg
Impact
High effect
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Naturally sourced Caffeine | 100 mg | |
Rhodiola rosea root extract (Rosavins) | 100 mg | |
L-Theanine | 160 mg |
Theanine · 160 mg OverallScore88
Each serving provides 160 mg of L-theanine, with a moderate cost per 100 mg. No branded source or additional purity claim is recorded.
How this ingredient is rated
Active Ingredient Quality & Bioavailability80
The ingredient is L-theanine. No branded source or additional purity claim is recorded.
Isomer Specificity (L-Theanine)
The form is L-theanine.
Branded Forms & Purity Standards
No branded source or additional purity claim is recorded.
Dose, Safety & Label Transparency100
Each serving provides 160 mg of L-theanine.
Theanine Dosage Efficacy
Each serving provides 160 mg of L-theanine.
Label Transparency & Blends
The L-theanine amount is stated separately.
Value80
The cost per 100 mg of theanine is moderate.
Price per 100mg L-Theanine
The cost per 100 mg of theanine is moderate.
Caffeine · 100 mg OverallScore68
A serving supplies 100 mg of caffeine at a moderate cost per serving. The amount is clearly stated. The caffeine form or source is not specified in the available information. No listed secondary stimulants appear on the ingredient panel.
How this ingredient is rated
Active Ingredient Quality & Bioavailability40
The caffeine form or source is not specified in the available information.
Advanced Bioavailability and Release Profiles
The caffeine form or source is not specified in the available information.
Dose, Safety & Label Transparency100
The serving provides 100 mg of caffeine, a moderate amount. No listed secondary stimulants appear on the ingredient panel.
Caffeine Dose Transparency
The total caffeine amount is stated as 100 mg per serving.
Dosage Efficacy and Safety Margin
At 100 mg per serving, the caffeine amount is moderate.
Secondary Stimulant Disclosure and Risk
No listed secondary stimulants appear on the ingredient panel.
Value60
The cost per serving is moderate.
Price Per Serving vs. Collection Median
The cost per serving is moderate.
Rhodiola (Rosavins) · 100 mg OverallScore71
A serving provides 100 mg of Rhodiola rosea root extract, with a high cost for the declared Rhodiola amount. It lists 3% rosavins, but the salidroside percentage is unavailable. No configured artificial additives or flow agents are indicated.
How this ingredient is rated
Composition and Label Disclosure68
The source is Rhodiola rosea root extract. It lists 3% rosavins, but the salidroside percentage is unavailable.
Declared Rhodiola Marker Profile
It lists 3% rosavins, but the salidroside percentage is unavailable.
Rhodiola Species Detail
The source is Rhodiola rosea root extract.
Composition and Label Disclosure100
The serving declares 100 mg of Rhodiola. No configured artificial additives or flow agents are indicated.
Rhodiola Amount Disclosure
The serving declares 100 mg of Rhodiola rosea root extract.
Other Ingredients Disclosure
No configured artificial additives or flow agents are indicated.
Commercial Price and Usability20
The cost per 200 mg of declared Rhodiola is high.
Cost per 200 mg Declared Rhodiola
The cost per 200 mg of declared Rhodiola is high.
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Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Dose-Response Effects of Short-Term Rhodiola rosea (Golden Root Extract) Supplementation on Anaerobic Exercise Performance and Cognitive Function in Resistance-Trained Athletes: A Randomized, Crossover, Double-Blind, and Placebo-Controlled Study.
- A combination of green tea, rhodiola, magnesium and B vitamins modulates brain activity and protects against the effects of induced social stress in healthy volunteers.
- Rosenroot (Rhodiola rosea): traditional use, chemical composition, pharmacology and clinical efficacy.
- Rhodiola rosea in stress induced fatigue--a double blind cross-over study of a standardized extract SHR-5 with a repeated low-dose regimen on the mental performance of healthy physicians during night duty.
- Effects of a Rhodiola rosea extract on mental resource allocation and attention: An event-related potential dual task study.
- Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
- A Randomized, Triple-Blind, Placebo-Controlled, Crossover Study to Investigate the Efficacy of a Single Dose of AlphaWave® L-Theanine on Stress in a Healthy Adult Population.
- Effects of Tea (Camellia sinensis) or its Bioactive Compounds l-Theanine or l-Theanine plus Caffeine on Cognition, Sleep, and Mood in Healthy Participants: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
- Assessing the effects of caffeine and theanine on the maintenance of vigilance during a sustained attention task.
- Effects of l-Theanine on Cognitive Function in Middle-Aged and Older Subjects: A Randomized Placebo-Controlled Study.
- Evidence-based efficacy of adaptogens in fatigue, and molecular mechanisms related to their stress-protective activity.
- Central additive effect of Ginkgo biloba and Rhodiola rosea on psychomotor vigilance task and short-term working memory accuracy.
- Clinical evidence for the adaptogenic effects of Withania somnifera and Rhodiola rosea - A systematic review with molecular interpretation of psychometric outcomes.
- A randomised, double-blind, placebo-controlled, parallel-group study of the standardised extract shr-5 of the roots of Rhodiola rosea in the treatment of subjects with stress-related fatigue.
- Dose-response effect of L-theanine on psychomotor speed, sustained attention, and inhibitory control: a double-blind, placebo-controlled, crossover study.
- Acute effects of theanine, caffeine and theanine-caffeine combination on attention.
- 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.