$34.99 $1.16 per serving
Product analysis
Nitro-T may support short-term alertness and calm attention through caffeine and theanine. Caffeine can work against sleep, while kava may reduce daytime alertness, so the mixture has competing effects.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality30
Most ingredient preparations are unnamed, leaving their quality uncertain. The named plant compounds do not provide enough information to judge the rest of the mixture confidently.
Ingredient Transparency62
All ingredient amounts are disclosed, allowing the main serving contents to be checked. Most forms and the proportions of the ginkgo compounds are missing, limiting a complete comparison.
Value For Money41
Citrulline and ginger compare poorly on price, while theanine offers middle-of-the-range value. Value for the other priced components remains uncertain.
Customer Satisfaction72
The available customer feedback is very positive. The small review sample means the satisfaction picture remains less established.
Product Focus63
Caffeine and theanine provide the clearest links to alertness and calm attention. Caffeine works against sleep near bedtime, while kava may reduce alertness during the day.
- Format
Capsule - Container
- 90 Capsule(s)
- Per serving
- $1.16
- Customer rating
- 4.8 · 45 ratings
Goals
Impact
High effect
Theanine · 200 mgCaffeine · 65 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 fit60
The included amounts partly match the supplied comparisons, with low or undisclosed amounts limiting some contributions.
Goal fit
Several ingredients serve other purposes, giving the formula a broader focus than acute attention.
Dose adequacy
The included amounts partly match the supplied comparisons, with low or undisclosed amounts limiting some contributions.
Pathways80
The strongest saved connection concerns calm attention; a mechanism-related finding does not establish broad attention improvement.
Depth
The strongest saved connection concerns calm attention; 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
Theanine · 200 mg
Caffeine can support vigilance and sustained attention, although 65 mg per serving is below the reviewed 150 mg exposure and habitual use can reduce its effects. Theanine's 200 mg serving matches a small four-week trial, with cognitive differences limited to a lower-baseline subgroup. Ginkgo also receives a saved contribution, but its standardization markers do not establish equivalence to the extract with preliminary attention findings. No added benefit from combining these ingredients is established.
How this product is rated for Cognitive Support
Ingredient fit62
Theanine, caffeine and ginkgo receive saved contributions, with full amount coverage only for theanine.
Goal fit
The credited cognitive ingredients share the formula with several other actives, reducing its saved focus.
Dose adequacy
Theanine reaches its full saved amount anchor; caffeine and ginkgo receive partial coverage.
Pathways71
Stress and arousal regulation and caffeine-related alertness meet the saved coverage threshold; ginkgo adds a smaller blood-flow contribution.
Depth
Theanine's stress and arousal category has the strongest saved coverage.
Breadth
Two categories meet the saved threshold: stress and arousal regulation, and caffeine-related alertness.
Evidence75
Theanine and caffeine lead the saved evidence finding; ginkgo lacks verified identity as a studied extract.
Evidence strength
Theanine and caffeine provide the leading saved evidence contributions, with selected cognitive and attention findings respectively.
Studied preparation
Theanine and caffeine receive preparation recognition; ginkgo's markers do not establish identity as the tested extract.
Formulation logic100
The counted ingredients need no missing partner, and no configured conflict was found.
Partner coverage
All counted ingredients satisfy partner requirements without assuming caffeine-theanine synergy.
Conflicts
Caffeine is below the configured above-200 mg conflict threshold; no other configured conflict was matched.
Effective doses
All three counted ingredients pass the saved minimum amount threshold.
Impact
High effect
Theanine · 200 mgCaffeine · 65 mg
Caffeine can support short-term alertness and attention, while L-theanine may help reduce sustained-attention errors; these task effects do not establish better work output. The 65 mg caffeine per three-capsule serving provides a smaller contribution than the higher comparison amounts, and 200 mg L-theanine does not prove greater benefit than the lower tested amount. Ginkgo's findings are mixed despite its saved contribution. Kava can lower daytime arousal, working against the alertness goal.
How this product is rated for Productivity Boost
Ingredient fit55
Caffeine and L-theanine are the clearest attention-related ingredients. Several other actives broaden the formula beyond this goal, and the saved amount findings are uneven.
Goal fit
The formula mixes attention-related ingredients with several other actives and is linked to many goals, limiting its focus on productivity.
Dose adequacy
L-theanine reaches the comparison range, while caffeine and ginkgo receive partial amount recognition; these comparisons do not establish the size of a benefit.
Pathways60
The strongest saved finding is the attention route associated with L-theanine. Alertness and the ginkgo-associated route contribute less, leaving limited breadth.
Depth
The L-theanine-associated attention route is the most fully covered route in the saved findings.
Breadth
Only the L-theanine-associated attention route reaches the saved coverage threshold; alertness and the ginkgo-associated route remain below it.
Evidence76
Caffeine provides the strongest support for acute attention. The saved preparation findings are favorable, but ginkgo's conflicting context does not establish routine productivity benefits.
Evidence strength
Caffeine supplies the strongest evidence among the included ingredients at recognized amounts, primarily for acute attention rather than sustained work performance.
Studied preparation
The saved findings recognize all three credited ingredients as studied preparations; ginkgo's mixed findings still limit expectations for productivity.
Formulation logic93
The credited ingredients meet the saved minimum amount conditions without missing partners. Kava introduces a daytime-arousal conflict.
Partner coverage
All credited ingredients can contribute independently or meet their partner conditions; this does not establish extra benefit from combining them.
Conflicts
Kava is a calming aid that can lower daytime arousal, creating the conflict identified in the saved findings.
Effective doses
All three credited ingredients pass the saved minimum amount threshold, which does not prove that each produces a meaningful productivity benefit.
Impact
High effect
Theanine · 200 mg
Theanine provides the clearest connection to tension relief and relaxation during stressful tasks. Its 200 mg per selected serving reaches the saved quantity reference, with calming and sleep recovery represented in the result. Lasting mood and anxiety improvements remain uncertain. The formula also contains 65 mg caffeine per serving; the saved conflict check applies no deduction at that amount, which does not establish an absence of effects on sleep.
How this product is rated for Stress Relief
Ingredient fit57
Theanine provides the relevant ingredient focus. The main relevant amount reaches the saved reference.
Goal fit
Theanine supplies the relevant focus, alongside other actives that do not contribute to this goal in the saved result.
Dose adequacy
The selected serving reaches the saved quantity reference for theanine; this does not establish a personal effective dose.
Pathways71
The main represented aspect is neural calming. Two aspects have substantial representation, while other stress-related areas have limited or no coverage.
Depth
The strongest represented aspect is neural calming, based on theanine.
Breadth
Two aspects have substantial representation, while other stress-related areas have limited or no coverage.
Evidence77
The strongest relevant support comes from Theanine, subject to the ingredient-specific limitations described above.
Evidence strength
The strongest relevant support comes from Theanine, subject to the ingredient-specific limitations described above.
Studied preparation
The saved preparation check accepts the relevant ingredients; that finding does not establish identical trial conditions or lasting benefit.
Formulation logic100
The relevant ingredients meet the saved partner and minimum-amount checks. No configured conflict deduction applies to the declared caffeine amount; this does not show that caffeine cannot affect sleep.
Partner coverage
Theanine does not depend on an absent partner in the saved formulation check.
Conflicts
No configured conflict deduction applies to the declared caffeine amount; this does not show that caffeine cannot affect sleep.
Effective doses
The ingredients retained for this check clear its minimum amount threshold; this is a comparison finding, not proof of effectiveness.
Impact
High effect
L-theanine offers limited support for calm attention, with 200 mg per serving matching the acute study amount. Caffeine adds an alertness role, without establishing extra benefit from the combination. Ginkgo receives a contribution in the saved findings, but its clinical evidence does not establish routine cognitive protection or prevention of decline.
How this product is rated for Brain Health
Ingredient fit59
Theanine, Ginkgo provide the included ingredients connected to this goal, alongside ingredients aimed at other purposes.
Goal fit
Theanine, Ginkgo provide the included ingredients connected to this goal, alongside ingredients aimed at other purposes.
Dose adequacy
The included amounts provide partial support overall; some amounts fall below the saved comparison's full amount allowance.
Pathways48
The strongest saved connection is to stress and arousal regulation, without proving a clinical cognitive benefit. The saved findings concentrate on one brain process, leaving broader coverage limited.
Depth
The strongest saved connection is to stress and arousal regulation, without proving a clinical cognitive benefit.
Breadth
The saved findings concentrate on one brain process, leaving broader coverage limited.
Evidence78
Theanine leads the saved evidence finding; its specific population and outcome limits still apply. The counted ingredients retain the saved preparation matches; this does not establish benefit beyond the supplied evidence.
Evidence strength
Theanine leads the saved evidence finding; its specific population and outcome limits still apply.
Studied preparation
The counted ingredients retain the saved preparation matches; this does not establish benefit beyond the supplied evidence.
Formulation logic100
The saved findings show no missing partner or configured conflict. The counted ingredients meet the saved minimum amount threshold, which is not a proven effective dose.
Partner coverage
The counted ingredients have no unmet partner requirement in the supplied findings.
Conflicts
No configured ingredient conflict was found; this is not a comprehensive safety assessment.
Effective doses
The counted ingredients meet the saved minimum amount threshold, which is not a proven effective dose.
Impact
Moderate effect
Theanine may ease stress-related tension and anxiety, offering a modest connection to how you feel under pressure. That doesn't make it a reliable treatment for persistent low mood. The blend also contains caffeine, but combining it with theanine isn't a reason to assume a greater mood benefit.
How this product is rated for Mood Support
Ingredient fit59
Theanine may ease stress-related tension; a lasting antidepressant effect is unclear.
Goal fit
Theanine may ease stress-related tension; a lasting antidepressant effect is unclear.
Dose adequacy
Per serving: Kava 100 mg; Ginseng 50 mg; Caffeine 65 mg; Theanine 200 mg. These amounts don't guarantee a mood effect.
Pathways43
Theanine’s useful connection is stress-related tension and anxiety.
Depth
Theanine’s useful connection is stress-related tension and anxiety.
Breadth
Theanine’s useful connection is stress-related tension and anxiety.
Evidence61
Theanine may ease stress-related tension; a lasting antidepressant effect is unclear.
Evidence strength
Theanine may ease stress-related tension; a lasting antidepressant effect is unclear.
Studied preparation
The declared ingredient forms do not guarantee a greater mood effect.
Formulation logic100
The relevant ingredients do not require a missing partner, and no particular ingredient conflict is identified.
Partner coverage
The relevant ingredients can be used without a required missing partner.
Conflicts
No particular ingredient conflict is identified in this combination.
Effective doses
Per serving: Kava 100 mg; Ginseng 50 mg; Caffeine 65 mg; Theanine 200 mg. Reference comparisons are not a promise of benefit.
Impact
High effect
Theanine · 200 mg
Theanine may support relaxation and some aspects of reported sleep quality; its 200 mg per serving matches an amount used in a small repeated-use study. Caffeine at 65 mg per serving works against falling asleep near bedtime, and ginseng adds an activating ingredient. These competing ingredients weaken the formula’s fit for sleep despite theanine’s relevant role. An immediate sedating effect is not established.
How this product is rated for Sleep Support
Ingredient fit57
Theanine provides a relevant ingredient at a recognized amount, but the formula’s many other actives and broad focus reduce its fit for sleep.
Goal fit
Theanine supplies the sleep connection, while many other actives and a broad product focus dilute it.
Dose adequacy
Theanine at 200 mg per serving matches the amount used in a supplied sleep study.
Pathways73
Theanine covers relaxation and stress-related sleep processes, with relaxation the stronger route.
Depth
Theanine provides the strongest connection to relaxation-related sleep processes.
Breadth
Relaxation and stress-related sleep processes are covered, without comparable sleep-timing support.
Evidence86
Theanine has some supportive sleep findings from a small repeated-use trial. Its declared preparation receives recognition.
Evidence strength
Theanine has supportive findings, but the small study limits confidence in consistent sleep improvements.
Studied preparation
The declared L-theanine is recognized as a studied preparation.
Formulation logic76
Theanine can contribute alone, but caffeine and activating ginseng conflict with sleep onset.
Partner coverage
Theanine can contribute without an added partner.
Conflicts
Caffeine at 65 mg per serving and activating ginseng work against sleep onset near bedtime.
Effective doses
Theanine meets the amount requirement for inclusion.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
L-Citrulline | 1000 mg | |
L-Theanine | 200 mg | |
Tribulus fruit extract (Saponins) | 100 mg | |
Muira Puama bark extract | 100 mg | |
Ginger | 100 mg | |
Kava Kava root extract (Kavalactones) | 100 mg | |
Wild Oat straw extract | 100 mg | |
Caffeine (Coffea arabica) | 65 mg | |
Ginkgo leaf extract (Flavone Glycosides, Terpene Lactones) | 60 mg | |
Korean Ginseng | 50 mg |
Theanine · 200 mg OverallScore82
Each serving lists 200 mg of L-theanine. The whole-product price works out to about $0.58 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.
Value50
The whole-product price works out to about $0.58 per 100 mg of theanine.
Price per 100mg L-Theanine
At the whole-product price, 100 mg of theanine corresponds to about $0.58.
Citrulline · 1000 mg OverallScore54
A serving provides 1,000 mg of L-citrulline, a relatively small amount in this comparison. The whole-product price works out to about $1.17 per gram of L-citrulline.
How this ingredient is rated
Active Ingredient Quality & Bioavailability70
The ingredient is listed as L-citrulline rather than a citrulline malate mixture. No citrulline-specific source, grade, or purity claim is recorded in the saved facts.
Citrulline Form Specificity
The ingredient is listed as L-citrulline rather than a citrulline malate mixture.
Purity and Sourcing Markers
No citrulline-specific source, grade, or purity claim is recorded in the saved facts.
Dose, Safety & Label Transparency64
A serving provides 1,000 mg of L-citrulline, a relatively small amount in this comparison. The amount is individually listed.
L-Citrulline Dosage Efficacy
A serving provides 1,000 mg of L-citrulline, a relatively small amount in this comparison.
Label Clarity and Transparency
The individual L-citrulline amount is recorded as 1,000 mg per serving.
Value0
The whole-product price works out to about $1.17 per gram of L-citrulline.
Price per Gram of L-Citrulline
The whole-product price works out to about $1.17 per gram of L-citrulline.
Tribulus (Saponins) · 100 mg OverallScore100
Each serving provides 100 mg of Tribulus terrestris fruit extract. The extract is recorded as 20% saponins, providing a comparison point for its composition.
How this ingredient is rated
Composition and Label Disclosure
No separate composition or bioavailability rules were evaluated.
Composition and Label Disclosure100
The saved serving information records 100 mg of Tribulus terrestris fruit extract. The extract is recorded as 20% saponins, providing a comparison point for its composition.
Amount and Label Disclosure
Per serving: 100 mg of Tribulus terrestris fruit extract. The extract is recorded as 20% saponins, providing a comparison point for its composition.
Commercial Price and Usability
No separate price or usability rules were evaluated.
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Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Efficacy and adverse effects of ginkgo biloba for cognitive impairment and dementia: a systematic review and meta-analysis.
- Efficacy of Ginkgo biloba extract EGb 761® in dementia with behavioural and psychological symptoms: A systematic review.
- Ginkgo biloba extract EGb 761 is safe and effective in the treatment of mild dementia - a meta-analysis of patient subgroups in randomised controlled trials.
- Ginkgo biloba extract EGb 761® improves cognition and overall condition after ischemic stroke: Results from a pilot randomized trial.
- Ginkgo biloba extract EGb 761® in dementia with neuropsychiatric features: a randomised, placebo-controlled trial to confirm the efficacy and safety of a daily dose of 240 mg.
- 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.
- Efficacy of ginkgo diterpene lactone meglumine on cognitive function in patients with acute ischemic stroke: a predefined exploratory analysis of a multicenter, double-blind, randomized controlled trial.
- A placebo-controlled, double-blind, randomized trial of an extract of Ginkgo biloba for dementia. North American EGb Study Group.
- Alleviating neuropsychiatric symptoms in dementia: the effects of Ginkgo biloba extract EGb 761. Findings from a randomized controlled trial.
- Efficacy and safety of a once-daily formulation of Ginkgo biloba extract EGb 761 in dementia with neuropsychiatric features: a randomized controlled trial.
- 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.
- 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.