Sleep + Calm Strawberry

Sleep + Calm Strawberry

Natrol4.5 (6,447 ratings)
Format:Gummy Quantity: 60 Gummy(ies) · 30 servings
Goals

Product analysis

46 out of 100

Sleep + Calm Strawberry combines melatonin for sleep timing with theanine that may help relaxation. The herbal blend contents are undisclosed, making their additional contribution harder to judge.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality20

The melatonin and theanine forms are not clearly specified, limiting a close quality comparison. The unidentified herbal blend contents also leave the wider formula uncertain.

Ingredient Transparency50

Declared amounts help compare the melatonin, theanine and blend totals. Ingredient forms and individual herbal contents are unspecified, leaving the complete makeup unclear.

Value For Money59

The cost comparison is favorable for theanine but less favorable for melatonin. Value for the remaining listed component is uncertain, so the whole formula offers a mixed picture.

Customer Satisfaction84

Customer feedback is generally positive across thousands of ratings. The volume gives a broad view of satisfaction without establishing particular sleep or stress effects.

Product Focus40

Melatonin gives the clearest connection to sleep timing, while theanine may contribute to relaxation. The smaller theanine amount and unresolved herbs limit expectations for broader stress or mood benefits.

Format
Gummy
Container
60 Gummy(ies)
Per serving
$0.33
Customer rating
4.5 · 6,447 ratings
Report analysis

Goals

Sleep Support
Impact
Highest effect
B+ Ingredient FitC- PathwaysA+ EvidenceA+ Formulation Logic
Melatonin · 6 mgTheanine · 100 mg
Study evidence
Melatonin Supportive 181 studies
Theanine Supportive 8 studies
Mood Support
Impact
Moderate effect
C- Ingredient FitF PathwaysC EvidenceA+ Formulation Logic
Study evidence
Theanine Supportive 12 studies
Stress Relief
Impact
High effect
B Ingredient FitC PathwaysB EvidenceA+ Formulation Logic
Theanine · 100 mg
Study evidence
Melatonin Supportive 21 studies
Theanine Supportive 16 studies

Ingredients

IngredientAmount per servingScore
Calories
15 Calorie(s)
Total Carbohydrate
4 Gram(s)
L-Theanine
100 mg 88
Melatonin
6 mg 24
Proprietary Botanical Blend
25 mg
Adults 18–50 Dairy Free Vegetarian
Report overview
Theanine · 100 mg OverallScore88
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value
The serving supplies 100 mg of L-Theanine at a moderate cost per 100 mg. That's an amount associated with relaxation and focus. The available information does not identify a branded source or a purity claim.
How this ingredient is rated

Active Ingredient Quality & Bioavailability80

The ingredient is specified as L-Theanine. The available information does not identify a branded source or a purity claim.
Isomer Specificity (L-Theanine)
The label specifies L-Theanine, the active form associated with calming and focus.
Branded Forms & Purity Standards
The available information does not identify a branded source or a purity claim.

Dose, Safety & Label Transparency100

The label clearly lists 100 mg per serving, an amount associated with relaxation and focus.
Theanine Dosage Efficacy
The serving provides 100 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.
Melatonin · 6 mg OverallScore24
F Active Ingredient Quality & BioavailabilityD- Dose, Safety & Label TransparencyD- Value
The serving offers 6 mg of melatonin at a fairly high cost per serving. No independent purity certification claim is available in the information provided.
How this ingredient is rated

Active Ingredient Quality & Bioavailability0

No independent purity certification claim is available in the information provided.
Third-Party Purity Verification
No independent purity certification claim is available in the information provided.

Dose, Safety & Label Transparency40

The serving contains 6 mg of melatonin, a higher amount.
Physiological Dosing Alignment
The serving contains 6 mg of melatonin, a higher amount.

Value40

The cost per serving is fairly high.
Price Per Serving Efficiency
The cost per serving is fairly high.
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. l-theanine adjunct to sertraline for major depressive disorder: A randomized, double-blind, placebo-controlled clinical trial.
    Shamabadi A; Kafi F; Arab Bafrani M; Asadigandomani H; A Basti F; Akhondzadeh S · Journal of affective disorders · 2023
    Randomized trial60 participantsMood Support forTheanine
  2. 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.
    Ritsner MS; Miodownik C; Ratner Y; Shleifer T; Mar M; Pintov L; Lerner V · The Journal of clinical psychiatry · 2011
    Randomized trial60 participantsMood Support Stress Relief forTheanine
  3. The Effects of Green Tea Amino Acid L-Theanine Consumption on the Ability to Manage Stress and Anxiety Levels: a Systematic Review.
    Williams JL; Everett JM; D'Cunha NM; Sergi D; Georgousopoulou EN; Keegan RJ; McKune AJ; Mellor DD; Anstice N; Naumovski N · Plant foods for human nutrition (Dordrecht, Netherlands) · 2020
    Systematic review9 studies pooledMood Support forTheanine
  4. 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.
    Deshpande SS; Kurdi M; Baiju A; Athira AS; Sarasamma AG; Gangadharan AK · Journal of anaesthesiology, clinical pharmacology · 2025
    Randomized trial168 participantsMood Support Stress Relief forTheanine
  5. Anti-stress effect of theanine on students during pharmacy practice: positive correlation among salivary α-amylase activity, trait anxiety and subjective stress.
    Unno K; Tanida N; Ishii N; Yamamoto H; Iguchi K; Hoshino M; Takeda A; Ozawa H; Ohkubo T; Juneja LR; Yamada H · Pharmacology, biochemistry, and behavior · 2014
    Randomized trial20 participantsMood Support forTheanine
  6. Meta-analysis: melatonin for the treatment of primary sleep disorders.
    Ferracioli-Oda E; Qawasmi A; Bloch MH · PloS one · 2013
    Meta-analysis1,683 participants19 studies pooledSleep Support forMelatonin
  7. Melatonin treatment for age-related insomnia.
    Zhdanova IV; Wurtman RJ; Regan MM; Taylor JA; Shi JP; Leclair OU · The Journal of clinical endocrinology and metabolism · 2001
    Randomized trial30 participantsSleep Support forMelatonin
  8. The Effectiveness of Melatonin for Sleep Disturbances in Parkinson' Disease: Systematic Review and Meta-Analysis.
    Yousef O; Abouelmagd ME; Khaddam H; Shbani A; Yousef R; Meshref M; Hanafi I · Journal of sleep research · 2026
    Meta-analysis409 participants8 studies pooledSleep Support forMelatonin
  9. 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.
    Wade AG; Ford I; Crawford G; McConnachie A; Nir T; Laudon M; Zisapel N · BMC medicine · 2010
    Randomized trial791 participantsSleep Support forMelatonin
  10. Effects of exogenous melatonin on sleep: a meta-analysis.
    Brzezinski A; Vangel MG; Wurtman RJ; Norrie G; Zhdanova I; Ben-Shushan A; Ford I · Sleep medicine reviews · 2005
    Meta-analysis284 participants8 studies pooledSleep Support forMelatonin
  11. Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
    Hidese S; Ogawa S; Ota M; Ishida I; Yasukawa Z; Ozeki M; Kunugi H · Nutrients · 2020
    Randomized trial30 participantsSleep Support forTheanine
  12. 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.
    Kurdi MS; As A; Ladhad DA; Mitragotri MV; Baiju A · Indian journal of palliative care · 2024
    Randomized trial120 participantsSleep Support forTheanine
  13. The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis.
    Bulman A; D'Cunha NM; Marx W; Turner M; McKune A; Naumovski N · Sleep medicine reviews · 2025
    Meta-analysis897 participants19 studies pooledSleep Support forTheanine
  14. In Search of a Safe Natural Sleep Aid.
    Rao TP; Ozeki M; Juneja LR · Journal of the American College of Nutrition · 2016
    Narrative reviewSleep Support forTheanine
  15. L-theanine in the adjunctive treatment of generalized anxiety disorder: A double-blind, randomised, placebo-controlled trial.
    Sarris J; Byrne GJ; Cribb L; Oliver G; Murphy J; Macdonald P; Nazareth S; Karamacoska D; Galea S; Short A; Ee C; Birling Y; Menon R; Ng CH · Journal of psychiatric research · 2020
    Randomized trial46 participantsSleep Support forTheanine
  16. The impact of oral melatonin on pain and anxiety reduction during venipuncture in pediatric patients: a double-blind randomized clinical trial.
    Rahafard S; Akbari Jokar Z; Hosseini SA; Alaee E · Annals of medicine and surgery (2012) · 2024
    Randomized trial202 participantsStress Relief forMelatonin
  17. Comparison of Effects of Melatonin and Gabapentin on Post Operative Anxiety and Pain in Lumbar Spine Surgery: A Randomized Clinical Trial.
    Javaherforooshzadeh F; Amirpour I; Janatmakan F; Soltanzadeh M · Anesthesiology and pain medicine · 2022
    Randomized trial90 participantsStress Relief forMelatonin
  18. Melatonin for pre- and postoperative anxiety in adults.
    Hansen MV; Halladin NL; Rosenberg J; Gögenur I; Møller AM · The Cochrane database of systematic reviews · 2015
    Meta-analysis774 participants12 studies pooledStress Relief forMelatonin
  19. Effects of melatonin intake on depression and anxiety in postmenopausal women: a systematic review and meta-analysis of randomised controlled trials.
    Demirhan Kayacik A; İlcioglu K · Archives of women's mental health · 2024
    Meta-analysis441 participants5 studies pooledStress Relief forMelatonin
  20. Premedication effect of melatonin on propofol induction dose for anesthesia, anxiety, orientation and sedation after abdominal surgery: a double-blinded randomized trial.
    Norouzi A; Fateh S; Modir H; Kamali A; Akrami L · Medical gas research · 2020
    Randomized trial88 participantsStress Relief forMelatonin