$22.95 $0.38 per serving
Product analysis
L-Theanine & Caffeine may help short-term alertness and focus, with caffeine providing the clearest benefit. Theanine may ease tension during demanding tasks, though its effects are less consistent.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality30
Several ingredient forms are unspecified, limiting detailed quality comparisons. The coconut and green-coffee sources identify origins but do not establish the quality of the full mix.
Ingredient Transparency78
Serving amounts are disclosed for the listed ingredients. Most forms remain unspecified, so the quantities are clearer than some exact ingredient types.
Value For Money75
The theanine and caffeine comparisons indicate a competitively priced serving. Their favorable price comparisons do not establish an extra benefit from combining them.
Customer Satisfaction84
Customer feedback is very positive across a large number of ratings. The broad review base supports confidence in the satisfaction picture, without proving attention or calming effects.
Product Focus65
The formula's clearest purpose is short-term alertness and attention. Its wider range of intended uses has more limited support, including uncertain lasting benefits for mood or weight.
- Format
Softgel - Container
- 60 Softgel(s)
- Per serving
- $0.38
- Customer rating
- 4.5 · 4,226 ratings
Goals
Impact
High effect
Theanine · 200 mgCaffeine · 100 mg
Impact
High effect
Theanine · 200 mgCaffeine · 100 mg
Impact
Highest effect
Theanine · 200 mg
Impact
High effect
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Calories | 5 Calorie(s) | |
Total Fat | 0.5 Gram(s) | |
Medium Chain Triglycerides (Coconut) | 500 mg | |
L-Theanine | 200 mg | |
PurCaf Caffeine (Green Coffee) | 100 mg |
Theanine · 200 mg OverallScore96
The serving supplies 200 mg of L-Theanine at a moderate cost per 100 mg. That's an amount associated with relaxation and focus. It uses a branded source, though its name is not specified in the available information.
How this ingredient is rated
Active Ingredient Quality & Bioavailability100
The ingredient is specified as L-Theanine. It uses a branded source, though its name is not specified in the available information.
Isomer Specificity (L-Theanine)
The label specifies L-Theanine, the active form associated with calming and focus.
Branded Forms & Purity Standards
It uses a branded source, though its name is not specified in the available information.
Dose, Safety & Label Transparency100
The label clearly lists 200 mg per serving, an amount associated with relaxation and focus.
Theanine Dosage Efficacy
The serving provides 200 mg, an amount associated with relaxation and focus.
Label Transparency & Blends
The theanine amount and source are individually disclosed.
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 (Green Coffee) · 100 mg OverallScore72
The serving contains 100 mg of caffeine. The cost per serving is moderate. The caffeine source is unspecified in the available information.
How this ingredient is rated
Active Ingredient Quality & Bioavailability40
The caffeine source is unspecified in the available information.
Advanced Bioavailability and Release Profiles
The caffeine source is unspecified in the available information.
Dose, Safety & Label Transparency100
The serving contains 100 mg of caffeine. No additional stimulants are recorded in the available information.
Caffeine Dose Transparency
The total caffeine amount is stated as 100 mg per serving.
Dosage Efficacy and Safety Margin
The serving contains 100 mg of caffeine.
Secondary Stimulant Disclosure and Risk
No additional stimulants are recorded in the available information.
Value80
The cost per serving is moderate.
Price Per Serving vs. Collection Median
The cost per serving is moderate.
Alternative products
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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.