$7.99 $0.07 per serving
Product analysis
High Caffeine 200 mg offers a simple, economical way to support short-term alertness and attention. Its effects vary with tolerance, timing and sensitivity.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality24
The caffeine amount is clear, but its specific form is not identified. The quality of the calcium preparation also remains uncertain.
Ingredient Transparency81
Both ingredient amounts are disclosed, making the caffeine serving easy to track. The caffeine form is unspecified even though the calcium form is named.
Value For Money88
Caffeine offers favorable value for the serving cost. The calcium content has no clear value conclusion.
Customer Satisfaction78
Customer feedback is very positive across several hundred ratings. The review base supports satisfaction without showing how any individual will respond.
Product Focus72
Caffeine gives the simple formula a clear role in short-term alertness and may help exercise performance. Broader claims about lasting productivity, muscle gain or weight loss go beyond those short-term effects.
- Format
Tablet - Container
- 100 Tablet(s)
- Per serving
- $0.07
- Customer rating
- 4.7 · 586 ratings
Goals
Impact
High effect
Caffeine · 200 mg
Caffeine supports alertness, vigilance and attention by blocking adenosine signals. Its disclosed amount per serving supplies the product’s main direct connection to mental focus. Effects can vary with habitual caffeine use, tolerance and sleep loss; the amount does not establish a benefit for every attention task.
How this product is rated for Mental Focus
Ingredient fit78
Caffeine underpin this product’s connection to focus. The amounts meet the saved comparison range.
Goal fit
The formula includes ingredients aimed at other purposes, so its focus connection is less concentrated.
Dose adequacy
The included amounts reach the saved reference range; this is an amount comparison, not proof of a focus benefit.
Pathways60
The main mapped contribution is adenosine-blocking alertness. Other aspects of focus receive less coverage.
Depth
Adenosine-blocking alertness is the strongest mapped route. This describes the main contribution rather than all aspects of focus.
Breadth
The meaningful mapped contribution is concentrated in one route, with limited breadth across other aspects of focus.
Evidence79
Attention evidence depends on the specific ingredient, preparation and context; it does not imply broad cognitive enhancement.
Evidence strength
Theanine or caffeine provides the leading attention evidence where present; the specific effects and limitations still apply.
Studied preparation
The included preparations match those accepted in the saved comparison; this does not extend the trials to different outcomes or populations.
Formulation logic100
The included ingredients have no identified configured conflict. No required partner is missing.
Partner coverage
No required partner is missing for the included ingredients.
Conflicts
No configured ingredient conflict was identified in the supplied findings.
Effective doses
The included ingredients meet the saved minimum amount threshold; that threshold is not a demonstrated effective dose for acute focus.
Impact
Highest effect
Caffeine · 200 mg
Caffeine can acutely increase alertness and reduce sleepiness. The 200 mg serving fully meets the saved amount comparison, with its contribution concentrated in central alertness. That effect does not provide cellular fuel or establish treatment of chronic fatigue. Response can vary with tolerance, sleep loss, timing and sensitivity, and a single serving does not describe total caffeine exposure.
How this product is rated for Energy
Ingredient fit78
Caffeine has a direct alertness role and a substantial amount, although the wider formula and product targeting reduce focus.
Goal fit
Caffeine is relevant to alertness, while other formula components and broad product targeting reduce focus.
Dose adequacy
The 200 mg serving fully meets the saved comparison; escalation does not establish more benefit.
Pathways60
The contribution is concentrated in central alertness rather than the other assessed energy areas.
Depth
Central alertness has strong coverage.
Breadth
Only central alertness reaches substantial coverage.
Evidence100
Caffeine has the strongest saved support for acute alertness and reduced sleepiness. Its preparation meets the saved criteria.
Evidence strength
Caffeine's strongest support concerns acute alertness rather than chronic-fatigue treatment.
Studied preparation
The declared caffeine meets the saved preparation criteria without a form-superiority claim.
Formulation logic100
Caffeine clears the saved amount threshold and triggers no assessed conflict or missing partner.
Partner coverage
Caffeine can contribute without a required partner.
Conflicts
No assessed ingredient conflict was triggered.
Effective doses
Caffeine clears the saved minimum amount threshold.
Impact
High effect
Caffeine · 200 mg
Caffeine supports short-term alertness and attention by blocking adenosine signalling. Attention test improvements do not establish sustained work output.
How this product is rated for Productivity Boost
Ingredient fit78
Caffeine provides the main practical connection. The saved amounts contribute, while preparation and outcome limits constrain what can be expected.
Goal fit
Caffeine provides the main connection within a broader formula whose other actives reduce its focus on this goal.
Dose adequacy
200 mg caffeine per serving reaches the saved amount comparison, without proving greater productivity at higher exposure.
Pathways60
Coverage is strongest in adenosine-blocking alertness. The other routes remain limited or unrepresented.
Depth
The strongest saved coverage is adenosine-blocking alertness through caffeine.
Breadth
One assessed pathway reaches the coverage threshold, leaving a narrow pattern of coverage.
Evidence76
Caffeine leads the saved evidence finding. The supplied evidence concerns cognitive tests or specific populations, rather than sustainable work output.
Evidence strength
Caffeine leads the evidence finding, with direct short-term attention results but no established sustained occupational-productivity benefit.
Studied preparation
Caffeine is accepted in the saved preparation finding; this does not establish superiority of the declared form or transfer every trial result.
Formulation logic100
The retained contributors meet the inclusion threshold, can contribute independently, and have no configured conflict identified.
Partner coverage
The contributing ingredients can be considered independently; no required companion is missing.
Conflicts
No configured ingredient conflict was identified in the supplied findings.
Effective doses
All ingredients retained as contributors meet the amount threshold for inclusion; that threshold is not a proven effective productivity dose.
Impact
High effect
Caffeine · 200 mg
Caffeine can produce a modest, temporary rise in resting metabolic rate. The 200 mg serving is explicitly declared and meets the saved amount comparison, but the supplied evidence does not establish that doubling caffeine doubles the effect. Acute thermogenesis does not establish sustained weight or fat loss.
How this product is rated for Metabolism Support
Ingredient fit78
Explicit caffeine provides the relevant thermogenic ingredient within a broader goal focus. The 200 mg serving meets the full amount comparison; it does not imply proportional benefit above the acute study exposure.
Goal fit
Explicit caffeine provides the relevant thermogenic ingredient within a broader goal focus.
Dose adequacy
The 200 mg serving meets the full amount comparison; it does not imply proportional benefit above the acute study exposure.
Pathways51
Adrenergic drive is the only covered area.
Depth
Adrenergic drive is the only covered area.
Breadth
One pathway reaches the breadth threshold; the other listed areas remain uncovered.
Evidence66
Caffeine has direct human evidence for a modest acute metabolic-rate rise, with limited relevance to lasting weight loss.
Evidence strength
Caffeine has direct human evidence for a modest acute metabolic-rate rise, with limited relevance to lasting weight loss.
Studied preparation
The recognized preparations match the saved criteria, without establishing broader outcomes than the supplied human findings.
Formulation logic100
Recognized ingredients can work alone or have their required partners. No configured conflicts were matched, and counted ingredients meet the saved minimum amount threshold.
Partner coverage
Recognized ingredients can work alone or have their required partners; this does not establish an added combination effect.
Conflicts
No configured ingredient conflict was matched.
Effective doses
All ingredients included in this amount check meet its minimum threshold; that does not itself demonstrate increased metabolic rate.
Impact
High effect
Caffeine · 200 mg
Caffeine can acutely improve exercise performance, most consistently in endurance activity, while strength and sprint responses vary. The declared amount contributes to this effect, but fixed serving amounts are only approximate comparisons because body mass is unavailable. The supplied evidence does not establish an individualized effective dose or an extra benefit from other accompanying ingredients.
How this product is rated for Fitness
Ingredient fit78
Caffeine provides a relevant fitness contribution. The relevant serving amounts reach the saved comparison endpoints; larger amounts do not establish larger benefits.
Goal fit
Caffeine contributes to the fitness findings, while other active ingredients make the formula less focused on this goal.
Dose adequacy
The relevant serving amounts reach the saved comparison endpoints; larger amounts do not establish larger benefits.
Pathways60
The strongest contribution concerns central drive and fatigue perception. Coverage is concentrated in this area.
Depth
The strongest saved contribution concerns central drive and fatigue perception, reflecting the relevant ingredients and serving amounts.
Breadth
Substantial coverage is concentrated in one exercise-related area.
Evidence77
Caffeine has the clearest acute support for endurance performance, with more variable strength and sprint responses.
Evidence strength
Caffeine has the clearest acute support for endurance performance, with more variable strength and sprint responses.
Studied preparation
The relevant preparations meet the saved criteria; this does not establish superiority of forms or replicate a complete study regimen.
Formulation logic100
The relevant ingredients have the partners they require, and no configured conflict was identified. Included amounts meet the saved minimum comparison.
Partner coverage
The relevant ingredients can contribute independently or have their required partners present; an additional combination benefit is not established.
Conflicts
No configured ingredient conflict was identified in the supplied findings.
Effective doses
All included ingredients meet the saved minimum amount comparison; this is not proof of benefit from a single serving.
Impact
Moderate effect
Caffeine · 200 mg
Caffeine may briefly increase heat production and energy use. Its weight-management contribution is modest, and tolerance can reduce the effect over time.
How this product is rated for Weight Loss
Ingredient fit78
Caffeine is the main relevant ingredient; broader exercise or energy ingredients do not add assessed weight-management benefits.
Goal fit
Caffeine is the main relevant ingredient; broader exercise or energy ingredients do not add assessed weight-management benefits.
Dose adequacy
The declared amount reaches the saved reference range.
Pathways48
Heat production and energy use provide the strongest support.
Depth
Heat production and energy use provide the strongest support.
Breadth
Heat production and energy use are the only route with substantial saved coverage.
Evidence62
Caffeine has relevant evidence for short-term heat production, with limited support for sustained weight loss.
Evidence strength
Caffeine has relevant evidence for short-term heat production, with limited support for sustained weight loss.
Studied preparation
The preparations assessed at useful amounts match those recognized in the saved review.
Formulation logic100
The assessed ingredients do not require a missing partner, and no configured ingredient conflict was found.
Partner coverage
The assessed ingredients can contribute without an additional missing partner.
Conflicts
No configured ingredient conflict was found in the supplied facts.
Effective doses
All ingredients counted for this finding reach the saved minimum amount.
Impact
High effect
Caffeine · 200 mg
Caffeine can improve acute strength, power or endurance, but this does not establish sustained muscle-mass gain.
How this product is rated for Muscle Gain
Ingredient fit68
The formula’s recognized ingredients mainly concern training performance; their amount findings do not establish added muscle growth.
Goal fit
Other actives and uses reduce the formula’s muscle-gain focus; recognition of training ingredients does not establish chronic hypertrophy.
Dose adequacy
The declared amounts only partly match the saved comparisons, with lower amounts or unresolved quantities limiting the finding.
Pathways50
The strongest saved connection concerns training work capacity and recovery. Performance or hydration changes alone do not establish muscle growth.
Depth
The strongest saved connection concerns training work capacity and recovery. Performance or hydration changes alone do not establish muscle growth.
Breadth
The saved findings concentrate on one main area, with little broader coverage of muscle-building needs.
Evidence83
The saved evidence finding includes performance ingredients whose supplied context does not establish sustained hypertrophy.
Evidence strength
Caffeine leads the saved evidence finding, but acute performance evidence cannot establish sustained hypertrophy.
Studied preparation
The saved finding accepts the preparation, without extending acute performance results to chronic muscle growth.
Formulation logic100
The ingredients meet the saved partner and amount checks, with no configured conflict identified.
Partner coverage
The recognized ingredients meet the saved partner checks; this does not establish an extra benefit from combining them.
Conflicts
No configured ingredient conflict was identified from the available facts.
Effective doses
The recognized ingredients reach the saved amount threshold, which is a comparison policy rather than proof of an effective hypertrophy dose.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Calcium (Dicalcium Phosphate Dihydrate) | 75 mg | |
Caffeine | 200 mg |
Caffeine · 200 mg OverallScore76
Each serving contains 200 mg of caffeine, an amount the evaluation considers moderate. A whole-product serving costs about $0.08, on the low end of the compared prices.
How this ingredient is rated
Active Ingredient Quality & Bioavailability40
Caffeine is identified, but the specific form is unknown in the saved facts; no particular release profile can be inferred.
Advanced Bioavailability and Release Profiles
Caffeine is identified, but the specific form is unknown in the saved facts; no particular release profile can be inferred.
Dose, Safety & Label Transparency100
The stated amount is 200 mg per serving, an amount the evaluation considers moderate. The evaluated label lists no other stimulants.
Caffeine Dose Transparency
The caffeine amount is stated as 200 mg per serving.
Dosage Efficacy and Safety Margin
The serving has 200 mg of caffeine, an amount the evaluation considers moderate.
Secondary Stimulant Disclosure and Risk
The evaluated label lists no other stimulants.
Value100
A whole-product serving costs about $0.08, on the low end of the compared prices.
Price Per Serving vs. Collection Median
A whole-product serving costs about $0.08, on the low end of the compared prices.
Alternative products
Report alternatives
Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- 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.
- Effects of caffeine on mood and performance: a study of realistic consumption.
- Effects of caffeine or diphenhydramine on visual vigilance.
- A Randomized Study to Examine the Ability of a Caffeine-Based Energy Drink to Impact Energy Expenditure, Fat Oxidation, and Cognitive Performance.
- Oolong tea increases metabolic rate and fat oxidation in men.
- Effect of caffeine intake on fat oxidation rate during exercise: is there a dose-response effect?
- Comparison of changes in energy expenditure and body temperatures after caffeine consumption.
- Caffeine Increases Work Done above Critical Power, but Not Anaerobic Work.