$20.89 $0.34 per serving
Product analysis
Energy + Focus may help short-term alertness and attention through caffeine, with more tentative calming support from theanine. Habitual caffeine use and sleep loss can change how useful that feels.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality30
Caffeine sources are named, but their names do not establish a quality advantage. The theanine form is unspecified, limiting a confident comparison of the finished formula.
Ingredient Transparency65
Both active amounts are stated. The caffeine-source split and theanine form are unspecified.
Value For Money80
Both the caffeine and theanine comparisons indicate reasonably affordable value. The low serving cost does not establish an extra benefit from combining them.
Customer Satisfaction63
Customer feedback is generally positive. A moderate number of ratings adds context to that satisfaction.
Product Focus66
The clearest purpose is short-term alertness and attention. Broader mood, stress, productivity and sustained weight-loss benefits have less direct or less consistent support.
- Format
Capsule - Container
- 60 Capsule(s)
- Per serving
- $0.34
- Customer rating
- 4.1 · 265 ratings
Goals
Impact
High effect
Theanine may support calm attention, and caffeine can support acute alertness and attention. The serving contains 200 mg theanine and 100 mg caffeine, but their combination does not automatically establish greater benefit. Small theanine trials do not establish sustained improvement in cognition.
How this product is rated for Brain Health
Ingredient fit91
Theanine provide the relevant connection to brain health. The formula is focused on that connection.
Goal fit
The relevant ingredients dominate the formula’s recognised connection, although the product is also linked to other goals.
Dose adequacy
The theanine amount receives full recognition; caffeine supports alertness but receives no separate contribution here.
Pathways48
Theanine’s relevant role is calm attention through regulation of stress and arousal.
Depth
Stress and arousal regulation is the main recognised route.
Breadth
Only the stress and arousal route reaches the coverage threshold.
Evidence78
Theanine supplies the strongest recognised evidence contribution. Its small trials mainly concern short-term attention.
Evidence strength
Theanine provides the strongest recognised evidence contribution among the ingredients counted here.
Studied preparation
The counted ingredients were recognised as studied preparations, though this does not remove the limits on general cognitive benefit.
Formulation logic100
The counted ingredients have no unmet partner requirement or matched conflict in the supplied findings. Amount recognition remains distinct from demonstrated cognitive benefit.
Partner coverage
The counted ingredients can contribute independently or have the required partner present.
Conflicts
No configured conflict was matched; this is not a general safety assessment.
Effective doses
All ingredients counted in this finding reach its minimum amount threshold; this does not establish a proven effective dose.
Impact
Highest effect
Theanine · 200 mg
Caffeine may support vigilance and sustained attention, while theanine has limited evidence for verbal fluency and executive function in adults with lower initial performance. The serving's 100 mg caffeine is below the supplied standalone attention-trial exposure, while 200 mg theanine matches its small four-week trial. Caffeine does not consistently improve memory or learning, tolerance can develop, and no added benefit from combining the two is established.
How this product is rated for Cognitive Support
Ingredient fit89
Caffeine and theanine both connect directly with reviewed cognitive outcomes.
Goal fit
Caffeine and theanine both connect directly with reviewed cognitive outcomes.
Dose adequacy
Theanine matches its trial exposure; caffeine provides a partial comparison to the supplied standalone attention trial.
Pathways71
The saved findings cover stress regulation and caffeine-related alertness.
Depth
The saved findings cover stress regulation and caffeine-related alertness.
Breadth
Two routes receive substantial contributions in the saved findings.
Evidence81
Theanine leads the saved evidence finding; caffeine supplies separate attention evidence.
Evidence strength
Theanine leads the saved evidence finding; caffeine supplies separate attention evidence.
Studied preparation
Both declared ingredients are recognized in the saved preparation finding.
Formulation logic100
The included ingredients need no missing partner, and no configured ingredient conflict was found.
Partner coverage
The included ingredients can contribute independently; no required partner is missing.
Conflicts
No configured caffeine, melatonin or stimulant-amine conflict was found.
Effective doses
All ingredients included in this finding meet its minimum amount comparison; that threshold does not establish clinical effectiveness.
Impact
High effect
Theanine · 200 mgCaffeine · 100 mg
Caffeine can improve short-term alertness, vigilance and attention-task performance. Timing, habitual use and sleep loss can change its practical effect. Theanine has modest, mixed findings for selective attention and recognition speed, without a guaranteed calming effect or added benefit from caffeine.
How this product is rated for Mental Focus
Ingredient fit91
The included amounts reach the full supplied comparison range; larger amounts do not establish greater focus.
Goal fit
The main ingredients align with the supplied focus comparison, although their roles extend beyond attention.
Dose adequacy
The included amounts reach the full supplied comparison range; larger amounts do not establish greater focus.
Pathways80
The strongest saved connection concerns adenosine-blocking alertness; a mechanism-related finding does not establish broad attention improvement.
Depth
The strongest saved connection concerns adenosine-blocking alertness; a mechanism-related finding does not establish broad attention improvement.
Breadth
Two mechanisms reach the supplied coverage threshold; the other focus-related routes remain unrepresented.
Evidence79
Caffeine has direct acute attention and vigilance findings, with individual response and circumstances affecting relevance.
Evidence strength
Caffeine has direct acute attention and vigilance findings, with individual response and circumstances affecting relevance.
Studied preparation
The saved findings recognize the included preparations, without proving superior delivery or broad focus benefits.
Formulation logic100
No required partner is missing in the supplied findings; this does not establish synergy. No conflict was identified by the supplied checks.
Partner coverage
No required partner is missing in the supplied findings; this does not establish synergy.
Conflicts
No conflict was identified by the supplied checks.
Effective doses
All retained ingredients pass the minimum amount comparison, which is not proof of an effective clinical dose.
Impact
High effect
Caffeine · 100 mg
Caffeine supports short-term alertness and reduced sleepiness, rather than supplying cellular fuel or treating chronic fatigue. Its explicitly declared serving amount provides the relevant contribution, without establishing greater benefit from a higher dose or botanical source. Theanine does not establish standalone fatigue relief or a universal reduction in caffeine-related jitters.
How this product is rated for Energy
Ingredient fit79
Caffeine anchors the relevant saved findings. Other ingredients and differing amount comparisons limit the formula’s concentration on this goal.
Goal fit
Caffeine gives the formula a clear connection to this goal, while its links to other goals reduce exclusive focus.
Dose adequacy
Some ingredients meet their serving-amount comparisons while others make partial contributions; these comparisons do not measure the size of a fatigue benefit.
Pathways49
The strongest connection concerns central alertness. Other processes have narrower coverage.
Depth
The strongest saved connection is to central alertness; this is ingredient coverage rather than a measured increase in energy.
Breadth
The main covered processes are central alertness. The other processes receive more limited support.
Evidence96
Caffeine leads the evidence finding for acute alertness and reduced sleepiness.
Evidence strength
Caffeine leads the evidence finding for acute alertness and reduced sleepiness.
Studied preparation
The preparation comparison is limited by Theanine; their saved contributions do not establish the selected studied preparation or routine fatigue benefit.
Formulation logic100
No missing required partner or listed sedating conflict is identified. Counted ingredients meet the minimum amount comparison.
Partner coverage
No counted ingredient lacks a required partner under the supplied findings; this does not establish extra benefit from combining ingredients.
Conflicts
No valerian, kava or qualifying tryptophan conflict is triggered, and the melatonin condition does not apply; this is a limited conflict check.
Effective doses
All counted ingredients meet the saved minimum amount comparison; smaller or unresolved ingredients remain excluded from this finding.
Theanine Not classified
No linked studies yet.
Impact
Moderate effect
L-theanine may ease tension or anxiety after mentally demanding tasks. That makes its most useful connection to mood a modest, stress-related calming effect, rather than a reliable improvement in ongoing low mood. The 200 mg serving matches the amount linked to that short-term effect. Combining it with caffeine doesn't by itself imply a greater emotional benefit.
How this product is rated for Mood Support
Ingredient fit77
L-theanine may ease stress-related tension, while a sustained improvement in low mood is unclear.
Goal fit
L-theanine may ease stress-related tension, while a sustained improvement in low mood is unclear.
Dose adequacy
L-theanine provides 200 mg per serving; this amount alone doesn't predict mood improvement.
Pathways43
The main connection concerns calming, which is narrower than a general improvement in mood.
Depth
The main connection concerns calming, which is narrower than a general improvement in mood.
Breadth
The mood connection is narrow; additional emotional effects cannot be assumed from ingredient mechanisms.
Evidence61
L-theanine may ease stress-related tension, while a sustained improvement in low mood is unclear.
Evidence strength
L-theanine may ease stress-related tension, while a sustained improvement in low mood is unclear.
Studied preparation
The declared L-theanine amount can be identified directly.
Formulation logic100
L-theanine does not depend on a companion ingredient here. No particular conflict among the listed ingredients is identified.
Partner coverage
L-theanine does not require another listed ingredient for its potential contribution.
Conflicts
No particular conflict among the listed ingredients is identified.
Effective doses
L-theanine provides 200 mg per serving; this amount alone doesn't predict mood improvement.
Impact
High effect
Theanine · 200 mgCaffeine · 100 mg
Caffeine can improve short-term alertness, and theanine has limited evidence for fewer sustained-attention errors. These are attention-test outcomes rather than measured work output. Their combination does not establish extra benefit beyond either ingredient alone, and theanine does not guarantee a calming or anti-jitter effect. Timing, caffeine tolerance and sleep loss can change the practical result.
How this product is rated for Productivity Boost
Ingredient fit81
Caffeine is among the recognized ingredients. The declared amounts partly match the saved comparison references, without establishing proportional changes in productivity.
Goal fit
The relevant ingredients are prominent in this formula, although links to other goals reduce its exclusive focus on productivity.
Dose adequacy
The declared amounts partly match the saved comparison references, without establishing proportional changes in productivity.
Pathways80
The strongest saved coverage concerns calm attention. This describes the configured mechanism rather than measured work improvement. Two productivity pathways reach the saved coverage threshold, while the remaining pathways are less represented.
Depth
The strongest saved coverage concerns calm attention. This describes the configured mechanism rather than measured work improvement.
Breadth
Two productivity pathways reach the saved coverage threshold, while the remaining pathways are less represented.
Evidence76
Caffeine provides the leading saved evidence contribution. The supplied findings concern nutrient needs or cognitive tests rather than established occupational productivity.
Evidence strength
Caffeine leads the saved evidence findings; the supplied population and outcome limitations still restrict what can be expected.
Studied preparation
The saved result recognizes the counted preparations as studied, without extending the findings beyond their specific populations and outcomes.
Formulation logic100
No configured ingredient conflict was identified. The counted ingredients meet the saved minimum amount threshold and have no missing required partner.
Partner coverage
The counted ingredients work independently or have their required partner; no additional benefit from combining them is established.
Conflicts
No configured ingredient conflict was identified.
Effective doses
All counted ingredients reach the saved minimum amount threshold, which is not a validated effective dose for work output.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
L-Theanine | 200 mg | |
natural Caffeine (Caffeine Anhydrous, Coffea canephora, Coffee arabica) | 100 mg |
Theanine · 200 mg OverallScore88
Each serving lists 200 mg of L-theanine. The whole-product price works out to about $0.17 per 100 mg of theanine.
How this ingredient is rated
Active Ingredient Quality & Bioavailability80
The ingredient is identified as L-theanine; the saved facts do not identify a branded source or purity claim.
Isomer Specificity (L-Theanine)
L-theanine is the identified form.
Branded Forms & Purity Standards
The saved facts do not identify a branded source or a purity claim.
Dose, Safety & Label Transparency100
The 200 mg of L-theanine per serving is separately disclosed, making comparisons easier.
Theanine Dosage Efficacy
A serving contains 200 mg of L-theanine.
Label Transparency & Blends
The L-theanine amount is individually disclosed.
Value80
The whole-product price works out to about $0.17 per 100 mg of theanine.
Price per 100mg L-Theanine
At the whole-product price, 100 mg of theanine corresponds to about $0.17.
Each serving provides 100 mg of caffeine, a substantial amount. The whole-product serving costs about $0.35.
How this ingredient is rated
Active Ingredient Quality & Bioavailability40
The saved facts identify caffeine but do not establish a more specific form or distinct release profile.
Advanced Bioavailability and Release Profiles
Caffeine is identified, but the saved facts do not establish a more specific form or a distinct release profile.
Dose, Safety & Label Transparency100
A serving contains 100 mg of caffeine, a substantial amount. No secondary stimulants covered by the evaluation are recorded.
Caffeine Dose Transparency
The saved facts give a total of 100 mg of caffeine per serving.
Dosage Efficacy and Safety Margin
A serving contains 100 mg of caffeine, a substantial amount.
Secondary Stimulant Disclosure and Risk
No secondary stimulants covered by the evaluation are recorded in the saved facts.
Value80
A whole-product serving costs about $0.35, a lower price in this comparison.
Price Per Serving vs. Collection Median
The whole-product price is about $0.35 per serving, a lower price in this comparison.
Alternative products
Report alternatives
Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- 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.
- 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.
- Trait Energy and Fatigue Modify the Effects of Caffeine on Mood, Cognitive and Fine-Motor Task Performance: A Post-Hoc Study.
- Effect of caffeine ingestion on cycling performance: a systematic review and meta-analysis.
- Effects of Caffeine Intake on Endurance Running Performance and Time to Exhaustion: A Systematic Review and Meta-Analysis.
- Acute Effects of Caffeine Supplementation on Movement Velocity in Resistance Exercise: A Systematic Review and Meta-analysis.
- Sex Differences in the Ergogenic Response of Acute Caffeine Intake on Muscular Strength, Power and Endurance Performance in Resistance-Trained Individuals: A Randomized Controlled Trial.
- Can I Have My Coffee and Drink It? A Systematic Review and Meta-analysis to Determine Whether Habitual Caffeine Consumption Affects the Ergogenic Effect of Caffeine.
- Effects of modafinil and caffeine on night-time vigilance of air force crewmembers: A randomized controlled trial.
- Acute effects of caffeine on attention: a comparison of non-consumers and withdrawn consumers.
- Performance and alertness effects of caffeine, dextroamphetamine, and modafinil during sleep deprivation.