$18.99 $0.54 per serving
Product analysis
Extra Strength Sleep Blackberry Zen may help with sleep timing and falling asleep, mainly through melatonin, with theanine adding possible relaxation support. The formula is relatively expensive for its key ingredients.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality20
The specific ingredient forms are not disclosed. That limits a close quality comparison of the sleep ingredients and herbs.
Ingredient Transparency63
The listed amounts are fully stated, making the serving contents easy to check. Missing form details make it harder to compare the preparations with alternatives.
Value For Money33
The serving looks expensive for melatonin and theanine. Value for the remaining ingredients cannot be judged confidently.
Customer Satisfaction77
Customer feedback is generally positive across more than a thousand ratings. The sizeable review base provides useful satisfaction context without establishing sleep benefits.
Product Focus78
The formula fits sleep support more clearly than general stress relief. Melatonin drives that purpose, while the small herb amounts do not establish an added contribution.
- Format
Gummy - Container
- 70 Gummy(ies)
- Per serving
- $0.54
- Also available
Sleep Blackberry Zen$16.99- Customer rating
- 4.5 · 1,190 ratings
Goals
Impact
Highest effect
Melatonin · 5 mgTheanine · 75 mg
Impact
High effect
Theanine · 75 mg
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Calories | 15 Calorie(s) | |
Total Carbohydrates | 3 Gram(s) | |
Protein | 1 Gram(s) | |
Melatonin | 5 mg | |
L-Theanine | 75 mg | |
Chamomile flower extract | 17 mg | |
Passionflower aerial parts extract | 17 mg | |
Lemon Balm aerial parts extract | 16 mg |
Theanine · 75 mg OverallScore70
Each serving provides 75 mg of L-theanine, with a high cost per 100 mg. No branded source or additional purity claim is specified in the available information.
How this ingredient is rated
Active Ingredient Quality & Bioavailability80
The form is L-theanine. No branded source or additional purity claim is specified in the available information.
Isomer Specificity (L-Theanine)
The ingredient is listed as L-theanine, the form associated with calming and focus.
Branded Forms & Purity Standards
No branded source or additional purity claim is specified in the available information.
Dose, Safety & Label Transparency86
75 mg per serving is a modest amount of L-theanine. The amount and source are clearly listed.
Theanine Dosage Efficacy
75 mg per serving is a modest amount of L-theanine.
Label Transparency & Blends
The amount and source of L-theanine are disclosed.
Value20
The cost per 100 mg of theanine is high.
Price per 100mg L-Theanine
The cost per 100 mg of theanine is high.
Melatonin · 5 mg OverallScore60
A serving provides 5 mg of melatonin at a high cost per serving. It comes as a gummy; its melatonin source is unclear. A third-party laboratory claim is present, but it has not been independently confirmed.
How this ingredient is rated
Active Ingredient Quality & Bioavailability60
It comes as a gummy, but the melatonin source is unclear. A third-party laboratory claim is present, but it has not been independently confirmed.
Third-Party Purity Verification
A third-party laboratory claim is present, but it has not been independently confirmed.
Dose, Safety & Label Transparency75
A serving provides 5 mg of melatonin.
Physiological Dosing Alignment
A serving provides 5 mg of melatonin.
Value30
The cost per serving is high.
Price Per Serving Efficiency
The cost per serving is high.
Alternative products
Report alternatives
Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Meta-analysis: melatonin for the treatment of primary sleep disorders.
- Melatonin treatment for age-related insomnia.
- The Effectiveness of Melatonin for Sleep Disturbances in Parkinson' Disease: Systematic Review and Meta-Analysis.
- Nightly treatment of primary insomnia with prolonged release melatonin for 6 months: a randomized placebo controlled trial on age and endogenous melatonin as predictors of efficacy and safety.
- Effects of exogenous melatonin on sleep: a meta-analysis.
- Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
- Comparison Between Efficacy of Oral Melatonin and Oral L-theanine in Improving Sleep in Cancer Patients Suffering From Insomnia: A Randomised Double-blinded Placebo-controlled Study.
- The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis.
- In Search of a Safe Natural Sleep Aid.
- L-theanine in the adjunctive treatment of generalized anxiety disorder: A double-blind, randomised, placebo-controlled trial.
- The impact of oral melatonin on pain and anxiety reduction during venipuncture in pediatric patients: a double-blind randomized clinical trial.
- Comparison of Effects of Melatonin and Gabapentin on Post Operative Anxiety and Pain in Lumbar Spine Surgery: A Randomized Clinical Trial.
- Melatonin for pre- and postoperative anxiety in adults.
- Effects of melatonin intake on depression and anxiety in postmenopausal women: a systematic review and meta-analysis of randomised controlled trials.
- Premedication effect of melatonin on propofol induction dose for anesthesia, anxiety, orientation and sedation after abdominal surgery: a double-blinded randomized trial.
- Anti-Stress, Behavioural and Magnetoencephalography Effects of an L-Theanine-Based Nutrient Drink: A Randomised, Double-Blind, Placebo-Controlled, Crossover Trial.
- L-theanine relieves positive, activation, and anxiety symptoms in patients with schizophrenia and schizoaffective disorder: an 8-week, randomized, double-blind, placebo-controlled, 2-center study.
- Safety and Efficacy of AlphaWave® L-Theanine Supplementation for 28 Days in Healthy Adults with Moderate Stress: A Randomized, Double-Blind, Placebo-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.
- Comparison of the effects of two amino acids, Gamma-aminobutyric acid (GABA) and L-theanine, on sedation, anxiety, and cognition in preoperative surgical patients - A randomized controlled study.