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Relax Magnesium Powder Berry

youtheory
4.7
★ ★ ★ ★ ★
(1593 ratings)
Theanine 100 mg
GABA 100 mg
Magnesium 300 mg
Product Image
Score79
A clean three-ingredient relaxation powder with meaningful magnesium. Digestive tolerance and a short serving count are the main trade-offs.
How scoring works
Quantity:4 Ounce(s) • (21 servings)
Goals:
Energy
Sleep Support
Mood Support
Stress Relief
General Health
Cognitive Support
Brain Health
Productivity Boost

Score 79

A clean three-ingredient relaxation powder with meaningful magnesium. Digestive tolerance and a short serving count are the main trade-offs.
How scoring works
$19.19($0.91 per serving)
iHerb
$ 19.19
Pure Formulas
$ 25.19
Vitacost
$ 19.49
Amazon
$ 19.19
Walmart
$ 19.19
Report prices

Analysis

The powder supplies 300 mg magnesium citrate, a useful amount for people whose intake is low. One hundred milligrams each of theanine and GABA add moderate calming support without making the blend unusually complex.

A flavored drink can be easier to adjust and take than tablets. Magnesium citrate is well known for digestive effects, which may help or hinder depending on the user.

The formula is concise and easy to understand. Its main limitations are a short supply and the possibility that the moderate theanine and GABA amounts may feel subtle.

Who is it for
  • Adults who prefer drink powders
  • Users seeking magnesium with theanine and GABA
  • People comfortable with magnesium citrate
Best for
  • Evening relaxation
  • Pill-free magnesium
  • Simple calming routines

Pros

  • Clearly disclosed three-ingredient formula
  • Meaningful magnesium amount
  • Moderate theanine and GABA
  • Drinkable format

Cons

  • Only twenty-one servings
  • Magnesium citrate can be laxative
  • Theanine and GABA amounts are moderate rather than high

Warnings

  • Magnesium citrate may cause loose stools or abdominal cramping
  • Combining the calming ingredients with alcohol or sedatives may increase drowsiness
  • People with kidney disease should seek guidance before supplemental magnesium

Nutrient quality

88 Highest impact

Magnesium citrate is a well-understood form, while theanine and GABA lack branded source details. The magnesium amount is meaningful, while theanine and GABA provide moderate calming support.

.

Ingredient transparency

78 High impact

Every listed active ingredient has a specific amount. The supplied data does not include flavors, sweeteners, or other inactive ingredients.

.

Customer satisfaction

72 High impact

The aggregate satisfaction measure and review volume support a favorable first impression. Missing firsthand feedback leaves repeat complaints and real-world purpose fit uncertain.

.

Value for money

77 High impact

The concise formula offers fair quality for its moderate serving cost. Each serving provides reasonable value, though basic magnesium citrate is not a premium form.

.
Report analysis

Goals

Energy
Energy
Impact
Highest effect
A- Goal FitA Strength of SupportB CoverageA+ Formula Quality
Magnesium · 300 mg

Magnesium citrate provides substantial foundational support for muscles, nerves, and energy metabolism. L-theanine and GABA broaden the formula toward relaxation with clearly stated amounts.

The ingredient set is focused and transparent rather than spread across numerous small blends. The 300 mg magnesium serving may loosen stools or cause cramping in sensitive users, especially when combined with other magnesium products.

Study evidence
Magnesium Supportive 4 studies
Theanine Not classified

No linked studies yet.

Sleep Support
Sleep Support
Impact
Highest effect
B+ Goal FitA- Strength of SupportA- CoverageA Formula Quality
Magnesium · 300 mgTheanine · 100 mg

Magnesium citrate, L-theanine, and GABA cover muscle relaxation and calming signaling through complementary routes. The magnesium and theanine have stronger practical support than oral GABA, making those two ingredients the main basis for sleep relevance.

All three amounts are disclosed and meaningful, while the powder allows flexible preparation. Magnesium citrate at 300 mg may cause loose stools or digestive discomfort in sensitive users, which could work against comfortable sleep.

Study evidence
GABA Supportive 4 studies
Magnesium Supportive 23 studies
Theanine Supportive 8 studies
Mood Support
Mood Support
Impact
Highest effect
B+ Goal FitA- Strength of SupportB+ CoverageA+ Formula Quality
Magnesium · 300 mg

Magnesium citrate, L-theanine, and GABA create a coherent calming blend with meaningful disclosed amounts. Magnesium and theanine have stronger practical support than oral GABA for stress-related mood.

The formula covers nervous-system regulation and acute relaxation without excessive ingredient breadth. Magnesium citrate at 300 mg may loosen stools, and the combined calming actives may cause sleepiness in sensitive users.

Study evidence
GABA Supportive 12 studies
Magnesium Supportive 60 studies
Theanine Supportive 12 studies
Stress Relief
Stress Relief
Impact
Highest effect
B+ Goal FitA- Strength of SupportB CoverageA+ Formula Quality
Magnesium · 300 mgGABA · 100 mgTheanine · 100 mg

Magnesium citrate, GABA, and L-theanine form a complementary relaxation blend that targets physical tension and inhibitory signaling. Magnesium reaches a meaningful amount, while GABA and theanine provide useful supporting doses.

Evidence is strongest for magnesium when status is low and more mixed for standard oral GABA. The 300 mg magnesium citrate amount may loosen stools or cause stomach discomfort in sensitive users.

Study evidence
GABA Supportive 6 studies
Magnesium Supportive 13 studies
Theanine Supportive 16 studies
General Health
General Health
Impact
Highest effect
A- Goal FitA- Strength of SupportB- CoverageA- Formula Quality
Magnesium · 300 mg

Magnesium citrate provides direct support for muscle, nerve, and energy-related functions. The disclosed amount is meaningful for daily foundational support.

L-theanine and GABA keep the formula focused on relaxation, though evidence for oral GABA is less consistent. Magnesium citrate can loosen stools in sensitive users, especially when total magnesium intake is already high.

Study evidence
Magnesium Supportive 114 studies
Cognitive Support
Cognitive Support
Impact
Highest effect
B Goal FitA- Strength of SupportB- CoverageA Formula Quality
Magnesium · 300 mgTheanine · 100 mg

Magnesium, L-theanine, and GABA support relaxation and calm focus. Human evidence is strongest for magnesium sufficiency and theanine, while standard oral GABA has uncertain brain penetration.

The citrate form and all active amounts are clearly disclosed at useful levels. The calming blend may cause drowsiness in sensitive users, so its effect should be known before driving.

Study evidence
Magnesium Supportive 24 studies
Theanine Supportive 25 studies

Ingredients

IngredientAmount per serving
Magnesium (Magnesium Citrate)
 300 mg
GABA
100 mg
L-Theanine
100 mg
Adults 18–50 Women
Report overview
Theanine · 100 mg OverallScore82
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD+ Value

The powder combines an optimal L-Theanine amount with meaningful magnesium and GABA doses for relaxation support. The active isomer is clear, though no branded source or purity testing is identified. Pricing is premium for theanine alone, and 300 mg of magnesium citrate may loosen stools in sensitive users.

View ingredientView products
GABA · 100 mg OverallScore77
B+ Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyD- Value
The standard GABA amount is suitable within a magnesium and theanine blend but does not use a premium fermented source. Powder delivery is favorable, and the active dose is stated clearly. Magnesium citrate at 300 mg may loosen stools or cause digestive discomfort in sensitive users, while the serving cost is high for the GABA amount.
View ingredientView products
Magnesium (Magnesium Citrate) · 300 mg OverallScore62
D Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyD- Value
+6

Magnesium citrate provides moderate absorption at a clearly stated daily amount. The serving fits the preferred range, while GABA and theanine do not meet the stated magnesium cofactor criteria. An above-median serving cost limits value for a generic citrate formula.

View ingredientView products
Loading alternative details
90 Performance

ZenMind

NutriCology
Branded Suntheanine and a substantial GABA amount create a more focused relaxation formula than the original’s lower-dose pair. Magnesium is absent, and the combined calming ingredients may cause drowsiness in sensitive users.
92 Performance

Serenelle

Quality Of Life
Meaningful amounts of Sensoril ashwagandha, L-theanine, PharmaGABA, and lemon balm provide broader stress support than the original three-ingredient blend. The serving is less economical, but ingredient forms and doses are more purposefully developed.
91 Performance

GABA Soothe

Jarrow Formulas
Sensoril ashwagandha, L-theanine, and GABA form a concise blend with stronger stress alignment than the original. It gives up magnesium but offers useful calming amounts and reasonable practical value.
86 Budget

Theanine Serene

Source Naturals
The chelated magnesium amount matches the original, while GABA, taurine, and L-theanine are all supplied at substantially larger amounts for broader calming support. The serving is also more economical, though the exact magnesium chelate and holy basil standardization are not disclosed.
72 Budget

Chewable GABA

NOW
A substantial GABA amount and lower serving cost make this a practical budget choice for calming support. Taurine, inositol, and L-theanine are modest, and the chewable carbohydrate base is less focused than the original powder.
68 Budget

Goodbye Stress Berry Verbena

OLLY
GABA, L-theanine, and lemon balm preserve the original formula’s calming intent at a somewhat lower serving cost. Their amounts are modest and magnesium is absent, so the trade-off is a gentler, less complete formula.
90 Value

Theanine Serene

Source Naturals Serene Science
Chelated magnesium matches the original amount, while GABA, taurine, and L-theanine provide more substantial calming coverage. Clear doses and a lower serving cost improve quality-adjusted value, although exact chelate and botanical details remain limited.
78 Value

Ultra Strength Goodbye Stress

OLLY
Ashwagandha, GABA, L-theanine, and lemon balm broaden the calming pathways while keeping the serving cost close to the original. The amounts are modest and magnesium is absent, so the value comes from breadth rather than dose depth.
78 Value

200 mg of Zen

Allergy Research Group
The fully disclosed GABA and L-theanine amounts are substantially larger than in the original and keep the formula focused. Its serving is less economical and magnesium is absent, which limits its value advantage to users prioritizing those two ingredients.
Report alternatives

Sources

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

  1. Diagnosis of magnesium-induced diarrhea.
    Fine KD; Santa Ana CA; Fordtran JS · The New England journal of medicine · 1991
    Clinical trial19 participantsDigestive Health forMagnesium
  2. Promising, but Not Completely Conclusive-The Effect of l-Theanine on Cognitive Performance Based on the Systematic Review and Meta-Analysis of Randomized Placebo-Controlled Clinical Trials.
    Mátyus RO; Szikora Z; Bodó D; Vargáné Szabó B; Csupor É; Csupor D; Tóth B · Journal of clinical medicine · 2025
    Meta-analysis148 participants5 studies pooledMental Focus forTheanine
  3. Effects of zinc and magnesium supplements on postpartum depression and anxiety: A randomized controlled clinical trial.
    Fard FE; Mirghafourvand M; Mohammad-Alizadeh Charandabi S; Farshbaf-Khalili A; Javadzadeh Y; Asgharian H · Women & health · 2017
    Randomized trial99 participantsStress Relief forMagnesium
  4. 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 participantsStress Relief Sleep Support forTheanine
  5. Oral intake of γ-aminobutyric acid affects mood and activities of central nervous system during stressed condition induced by mental tasks.
    Yoto A; Murao S; Motoki M; Yokoyama Y; Horie N; Takeshima K; Masuda K; Kim M; Yokogoshi H · Amino acids · 2012
    Randomized trial63 participantsStress Relief Mood Support forGABA
  6. Relationship between Whole-Blood Magnesium and Cognitive Performance among Chinese Adults.
    Lu Z; He R; Zhang Y; Li B; Li F; Fu Y; Rong S · Nutrients · 2023
    Cross-sectional study1,006 participantsMental Focus forMagnesium
  7. Effect of the laxative magnesium oxide on gastrointestinal functional recovery in fast-track colonic resection: a double-blind, placebo-controlled randomized study.
    Andersen J; Christensen H; Pachler JH; Hallin M; Thaysen HV; Kehlet H · Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland · 2012
    Randomized trial49 participantsDigestive Health forMagnesium
  8. Examining the Effects of Supplemental Magnesium on Self-Reported Anxiety and Sleep Quality: A Systematic Review.
    Rawji A; Peltier MR; Mourtzanakis K; Awan S; Rana J; Pothen NJ; Afzal S · Cureus · 2024
    Systematic review15 studies pooledStress Relief forMagnesium
  9. Time for tea: mood, blood pressure and cognitive performance effects of caffeine and theanine administered alone and together.
    Rogers PJ; Smith JE; Heatherley SV; Pleydell-Pearce CW · Psychopharmacology · 2008
    Randomized trial48 participantsMental Focus Productivity Boost forTheanine
  10. Effect of Combined Ingestion of L-Theanine and L-Arginine for Short-Term Psychological Stress in Young Adults: A Randomized Placebo-Controlled Study.
    Furushima D; Sugiyama I; Nomura Y; Unno K; Yamada H · Journal of nutritional science and vitaminology · 2023
    Randomized trial120 participantsStress Relief forTheanine
  11. GABA Supplementation, Increased Heart-Rate Variability, Emotional Response, Sleep Efficiency and Reduced Depression in Sedentary Overweight Women Undergoing Physical Exercise: Placebo-Controlled, Randomized Clinical Trial.
    Guimarães AP; Seidel H; Pires LVM; Trindade CO; Baleeiro RDS; Souza PM; Silva FGDE; Coelho DB; Becker LK; Oliveira EC · Journal of dietary supplements · 2024
    Randomized trial30 participantsStress Relief Sleep Support forGABA
  12. Serum Magnesium and Cognitive Function Among Qatari Adults.
    Al-Ghazali K; Eltayeb S; Musleh A; Al-Abdi T; Ganji V; Shi Z · Frontiers in aging neuroscience · 2020
    Cross-sectional study1,000 participantsMental Focus forMagnesium
  13. Lactobacillus reuteri DSM 17938 and Magnesium Oxide in Children with Functional Chronic Constipation: A Double-Blind and Randomized Clinical Trial.
    Kubota M; Ito K; Tomimoto K; Kanazaki M; Tsukiyama K; Kubota A; Kuroki H; Fujita M; Vandenplas Y · Nutrients · 2020
    Randomized trial60 participantsDigestive Health forMagnesium
  14. A double-blind, placebo-controlled study evaluating the effects of caffeine and L-theanine both alone and in combination on cerebral blood flow, cognition and mood.
    Dodd FL; Kennedy DO; Riby LM; Haskell-Ramsay CF · Psychopharmacology · 2016
    Randomized trial24 participantsMental Focus forTheanine
  15. Anti-Stress, Behavioural and Magnetoencephalography Effects of an L-Theanine-Based Nutrient Drink: A Randomised, Double-Blind, Placebo-Controlled, Crossover Trial.
    White DJ; de Klerk S; Woods W; Gondalia S; Noonan C; Scholey AB · Nutrients · 2016
    Randomized trial34 participantsStress Relief forTheanine
  16. Role of magnesium supplementation in the treatment of depression: A randomized clinical trial.
    Tarleton EK; Littenberg B; MacLean CD; Kennedy AG; Daley C · PloS one · 2017
    Randomized trial126 participantsStress Relief Mood Support forMagnesium
  17. Magnesium status and attention deficit hyperactivity disorder (ADHD): A meta-analysis.
    Effatpanah M; Rezaei M; Effatpanah H; Effatpanah Z; Varkaneh HK; Mousavi SM; Fatahi S; Rinaldi G; Hashemi R · Psychiatry research · 2019
    Meta-analysisMental Focus forMagnesium
  18. Cortical gamma-aminobutyric acid and glutamate in posttraumatic stress disorder and their relationships to self-reported sleep quality.
    Meyerhoff DJ; Mon A; Metzler T; Neylan TC · Sleep · 2014
    Case-control study45 participantsStress Relief forGABA
  19. A Randomized Double-blind Placebo-controlled Trial on the Effect of Magnesium Oxide in Patients With Chronic Constipation.
    Mori S; Tomita T; Fujimura K; Asano H; Ogawa T; Yamasaki T; Kondo T; Kono T; Tozawa K; Oshima T; Fukui H; Kimura T; Watari J; Miwa H · Journal of neurogastroenterology and motility · 2022
    Randomized trial34 participantsDigestive Health forMagnesium
  20. 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.
    Payne ER; Aceves-Martins M; Dubost J; Greyling A; de Roos B · Nutrition reviews · 2025
    Meta-analysis50 studies pooledMental Focus Brain Health Cognitive Support forTheanine
  21. Safety and Efficacy of AlphaWave® L-Theanine Supplementation for 28 Days in Healthy Adults with Moderate Stress: A Randomized, Double-Blind, Placebo-Controlled Trial.
    Moulin M; Crowley DC; Xiong L; Guthrie N; Lewis ED · Neurology and therapy · 2024
    Randomized trial30 participantsStress Relief Mental Focus Productivity Boost forTheanine
  22. Effects of Intravenous Esketamine or Magnesium Sulfate on Early Postoperative Negative Emotions and Pain in Patients Undergoing Endoscopic Sinus Surgery: A Randomized Controlled Trial.
    Wang L; Zhou J; Liu Q; Qian K; Wang L; Xie C · Therapeutics and clinical risk management · 2026
    Randomized trial137 participantsStress Relief forMagnesium
  23. 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 participantsStress Relief Mood Support forTheanine Stress Relief forGABA
  24. The effect of vitamin D and magnesium supplementation on the mental health status of attention-deficit hyperactive children: a randomized controlled trial.
    Hemamy M; Pahlavani N; Amanollahi A; Islam SMS; McVicar J; Askari G; Malekahmadi M · BMC pediatrics · 2021
    Randomized trial33 participantsMental Focus forMagnesium
  25. The effect of food, vitamin, or mineral supplements on chronic constipation in adults: A systematic review and meta-analysis of randomized controlled trials.
    van der Schoot A; Creedon A; Whelan K; Dimidi E · Neurogastroenterology and motility · 2023
    Meta-analysis787 participants8 studies pooledDigestive Health forMagnesium
  26. Dose-response effect of L-theanine on psychomotor speed, sustained attention, and inhibitory control: a double-blind, placebo-controlled, crossover study.
    Dassanayake TL; Wijesundara D; Kahathuduwa CN; Weerasinghe VS · Nutritional neuroscience · 2023
    Randomized trial32 participantsMental Focus Cognitive Support forTheanine
  27. 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 participantsStress Relief Brain Health Cognitive Support Sleep Support forTheanine
  28. Effect of magnesium and vitamin B6 supplementation on mental health and quality of life in stressed healthy adults: Post-hoc analysis of a randomised controlled trial.
    Noah L; Dye L; Bois De Fer B; Mazur A; Pickering G; Pouteau E · Stress and health : journal of the International Society for the Investigation of Stress · 2021
    Randomized trialStress Relief forMagnesium
  29. Lactobacillus casei rhamnosus Lcr35 in children with chronic constipation.
    Bu LN; Chang MH; Ni YH; Chen HL; Cheng CC · Pediatrics international : official journal of the Japan Pediatric Society · 2007
    Randomized trial45 participantsDigestive Health forMagnesium
  30. Acute effects of theanine, caffeine and theanine-caffeine combination on attention.
    Kahathuduwa CN; Dassanayake TL; Amarakoon AMT; Weerasinghe VS · Nutritional neuroscience · 2018
    Clinical trial20 participantsMental Focus Cognitive Support forTheanine
  31. Effects of L-theanine or caffeine intake on changes in blood pressure under physical and psychological stresses.
    Yoto A; Motoki M; Murao S; Yokogoshi H · Journal of physiological anthropology · 2013
    Randomized trial14 participantsStress Relief forTheanine
  32. Effect of short-term magnesium supplementation on anxiety, depression and sleep quality in patients after open-heart surgery.
    Saba S; Faizi F; Sepandi M; Nehrir B · Magnesium research · 2022
    Non-randomized trial60 participantsStress Relief forMagnesium
  33. Efficacy of oral magnesium therapy in the treatment of chronic constipation in spastic cerebral palsy children: a randomized controlled trial.
    Hassanein SMA; Deifallah SM; Bastawy HA · World journal of pediatrics : WJP · 2021
    Randomized trial100 participantsDigestive Health forMagnesium
  34. Effects of l-Theanine on Cognitive Function in Middle-Aged and Older Subjects: A Randomized Placebo-Controlled Study.
    Baba Y; Inagaki S; Nakagawa S; Kaneko T; Kobayashi M; Takihara T · Journal of medicinal food · 2021
    Randomized trialMental Focus Brain Health Productivity Boost forTheanine
  35. 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.
    Evans M; McDonald AC; Xiong L; Crowley DC; Guthrie N · Neurology and therapy · 2021
    Randomized trialStress Relief Brain Health forTheanine
  36. Effects of Combined Intravenous and Topical Magnesium Sulfate Administration on Pain, Stress, and Functional Recovery After Total Knee Arthroplasty: A Prospective, Randomized, Blinded Controlled Trial.
    Wang Q; Wang Y; Hu J; Chen C; Yang J; Kang P · Drug design, development and therapy · 2026
    Randomized trial150 participantsStress Relief forMagnesium
  37. Ca:Mg ratio, medium-chain fatty acids, and the gut microbiome.
    Fan L; Zhu X; Sun S; Yu C; Huang X; Ness R; Dugan LL; Shu L; Seidner DL; Murff HJ; Fodor AA; Azcarate-Peril MA; Shrubsole MJ; Dai Q · Clinical nutrition (Edinburgh, Scotland) · 2022
    Randomized trial240 participantsDigestive Health forMagnesium
  38. Effects of dry needling compared to magnesium infiltration in trigger points for patients with myofascial pain syndrome: a randomized controlled study in Tunisia.
    Dhouibi J; Moncer R; Kalbousi N; Gaddour M; Laayouni S; Ouanes W; Kacem B; Jemni S · Korean journal of family medicine · 2026
    Randomized trial45 participantsStress Relief forMagnesium
  39. The Magnesium-Rich Formula for Functional Constipation in Infants: a Randomized Comparator-Controlled Study.
    Benninga MA; MENA Infant Constipation Study Group; Vandenplas Y · Pediatric gastroenterology, hepatology & nutrition · 2022
    Randomized trial286 participantsDigestive Health forMagnesium
  40. Effect of L-theanine on selective attention in a traffic-related reaction task in sleep-deprived young adults: a double-blind placebo-controlled, crossover study.
    Karunaratne UW; Dassanayake TL · Nutritional neuroscience · 2025
    Randomized trial24 participantsMental Focus forTheanine
  41. 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 pooledStress Relief Mood Support forTheanine
  42. The association between dietary intake of magnesium and psychiatric disorders among Iranian adults: a cross-sectional study.
    Anjom-Shoae J; Sadeghi O; Hassanzadeh Keshteli A; Afshar H; Esmaillzadeh A; Adibi P · The British journal of nutrition · 2019
    Cross-sectional study3,172 participantsStress Relief forMagnesium
  43. Magnesium-Rich Mineral Water Improves Stool Consistency and Bowel Habits in Healthy Subjects: A Randomized Controlled Trial.
    Yoneda H; Tomita T; Kitano T; Morishita D; Kodani M; Nishii N; Sei H; Eda H; Sato T; Kawai M; Yokoyama Y; Igeta M; Okugawa T; Fukui H; Shinzaki S · Neurogastroenterology and motility · 2026
    Randomized trial40 participantsDigestive Health forMagnesium
  44. L-theanine improves neurophysiological measures of attention in a dose-dependent manner: a double-blind, placebo-controlled, crossover study.
    Dassanayake TL; Kahathuduwa CN; Weerasinghe VS · Nutritional neuroscience · 2022
    Randomized trial27 participantsMental Focus forTheanine
  45. 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 participantsStress Relief Mood Support forTheanine
  46. Blood Magnesium Level and Selected Oxidative Stress Indices in Lead-Exposed Workers.
    Wyparło-Wszelaki M; Wąsik M; Machoń-Grecka A; Kasperczyk A; Bellanti F; Kasperczyk S; Dobrakowski M · Biological trace element research · 2021
    Cross-sectional study232 participantsStress Relief forMagnesium
  47. Association between Serum Magnesium and Fractures: A Systematic Review and Meta-Analysis of Observational Studies.
    Dominguez LJ; Veronese N; Ciriminna S; Pérez-Albela JL; Vásquez-López VF; Rodas-Regalado S; Di Bella G; Parisi A; Tagliaferri F; Barbagallo M · Nutrients · 2023
    Meta-analysis119,755 participants4 studies pooledBone Health forMagnesium
  48. Bioabsorbable Magnesium-Based Materials Potential and Safety in Bone Surgery: A Systematic Review.
    Hung CH; Kwok YC; Yip J; Wong HH; Leung YY · Craniomaxillofacial trauma & reconstruction · 2025
    Systematic review386 participants8 studies pooledBone Health forMagnesium
  49. Vascularized bone grafting fixed by biodegradable magnesium screw for treating osteonecrosis of the femoral head.
    Zhao D; Huang S; Lu F; Wang B; Yang L; Qin L; Yang K; Li Y; Li W; Wang W; Tian S; Zhang X; Gao W; Wang Z; Zhang Y; Xie X; Wang J; Li J · Biomaterials · 2016
    Randomized trial48 participantsBone Health forMagnesium
  50. An update on magnesium and bone health.
    Rondanelli M; Faliva MA; Tartara A; Gasparri C; Perna S; Infantino V; Riva A; Petrangolini G; Peroni G · Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2022
    Narrative reviewBone Health forMagnesium
  51. Sex-specific differences in the association of magnesium intake with femoral neck bone mineral density among older adults.
    Wang B; Tan X; Yao X; Zhu Z · Endocrine connections · 2025
    Cross-sectional study1,343 participantsBone Health forMagnesium
  52. Antenatal magnesium sulfate and neuroprotection.
    Doyle LW · Current opinion in pediatrics · 2012
    Meta-analysis6,145 participants5 studies pooledBrain Health forMagnesium
  53. No. 376-Magnesium Sulphate for Fetal Neuroprotection.
    Magee LA; De Silva DA; Sawchuck D; Synnes A; von Dadelszen P · Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstetrique et gynecologie du Canada : JOGC · 2020
    Guideline / consensus4,446 participantsBrain Health forMagnesium
  54. Magnesium Sulfate Before Preterm Birth for Neuroprotection: An Updated Cochrane Systematic Review.
    Shepherd ES; Goldsmith S; Doyle LW; Middleton P; Marret S; Rouse DJ; Pryde P; Wolf HT; Crowther CA · Obstetrics and gynecology · 2024
    Systematic review5,917 participants6 studies pooledBrain Health forMagnesium
  55. Magnesium sulphate for fetal neuroprotection at imminent risk for preterm delivery: a systematic review with meta-analysis and trial sequential analysis.
    Wolf HT; Huusom LD; Henriksen TB; Hegaard HK; Brok J; Pinborg A · BJOG : an international journal of obstetrics and gynaecology · 2020
    Meta-analysis5,917 participants6 studies pooledBrain Health forMagnesium
  56. Magnesium sulfate and fetal neuroprotection: overview of clinical evidence.
    Chollat C; Marret S · Neural regeneration research · 2020
    Narrative reviewBrain Health forMagnesium
  57. Assessing the effects of caffeine and theanine on the maintenance of vigilance during a sustained attention task.
    Foxe JJ; Morie KP; Laud PJ; Rowson MJ; de Bruin EA; Kelly SP · Neuropharmacology · 2012
    Randomized trial27 participantsBrain Health Cognitive Support forTheanine
  58. Circulating and dietary magnesium and risk of cardiovascular disease: a systematic review and meta-analysis of prospective studies.
    Del Gobbo LC; Imamura F; Wu JH; de Oliveira Otto MC; Chiuve SE; Mozaffarian D · The American journal of clinical nutrition · 2013
    Meta-analysis313,041 participants16 studies pooledCardiovascular Support forMagnesium
  59. Magnesium and the risk of cardiovascular events: a meta-analysis of prospective cohort studies.
    Qu X; Jin F; Hao Y; Li H; Tang T; Wang H; Yan W; Dai K · PloS one · 2013
    Meta-analysis532,979 participants19 studies pooledCardiovascular Support forMagnesium
  60. Quantitative Association Between Serum/Dietary Magnesium and Cardiovascular Disease/Coronary Heart Disease Risk: A Dose-Response Meta-analysis of Prospective Cohort Studies.
    Zhao L; Hu M; Yang L; Xu H; Song W; Qian Y; Zhao M · Journal of cardiovascular pharmacology · 2020
    Meta-analysis544,581 participants18 studies pooledCardiovascular Support Heart Health forMagnesium
  61. Comparative Efficacy of Nutraceuticals on Endothelial Function: A Systematic Review and Network Meta-Analysis.
    Norouzzadeh M; Rashedi MH; Mahdavi-Mazdeh G; Kosari A; Shahinfar H · Current atherosclerosis reports · 2026
    Meta-analysisCardiovascular Support Heart Health forMagnesium
  62. Serum magnesium, mortality, and cardiovascular disease in chronic kidney disease and end-stage renal disease patients: a systematic review and meta-analysis.
    Xiong J; He T; Wang M; Nie L; Zhang Y; Wang Y; Huang Y; Feng B; Zhang J; Zhao J · Journal of nephrology · 2020
    Meta-analysis200,934 participants20 studies pooledCardiovascular Support forMagnesium
  63. Magnesium sulphate for women at risk of preterm birth for neuroprotection of the fetus.
    Doyle LW; Crowther CA; Middleton P; Marret S; Rouse D · The Cochrane database of systematic reviews · 2009
    Meta-analysis6,145 participants5 studies pooledCognitive Support forMagnesium
  64. Effects of magnesium valproate adjuvant therapy on patients with dementia: A systematic review and meta-analysis.
    Zhang C; Sun L; Sun H · Medicine · 2022
    Meta-analysis1,899 participants22 studies pooledCognitive Support forMagnesium
  65. Effects of magnesium supplementation on serum brain-derived neurotrophic factor levels and cognitive function in patients undergoing fluoxetine therapy for depression.
    Noor NJ; Syamsuddin S; Liaury K; Tawali S; Idris I; Azis I; Lisal ST · East Asian archives of psychiatry : official journal of the Hong Kong College of Psychiatrists = Dong Ya jing shen ke xue zhi : Xianggang jing shen ke yi xue yuan qi kan · 2026
    Randomized trial40 participantsCognitive Support forMagnesium
  66. Magnesium-L-threonate improves sleep quality and daytime functioning in adults with self-reported sleep problems: A randomized controlled trial.
    Hausenblas HA; Lynch T; Hooper S; Shrestha A; Rosendale D; Gu J · Sleep medicine: X · 2025
    Randomized trial80 participantsCognitive Support Energy forMagnesium
  67. Could intraoperative magnesium sulphate protect against postoperative cognitive dysfunction?
    Hassan WF; Tawfik MH; Nabil TM; Abd Elkareem RM · Minerva anestesiologica · 2021
    Randomized trial80 participantsCognitive Support forMagnesium
  68. Magnesium treatment increases gut microbiome synthesizing vitamin D and inhibiting colorectal cancer: results from a double-blind precision-based randomized placebo-controlled trial.
    Sun E; Zhu X; Ness RM; Murff HJ; Sun S; Yu C; Fan L; Azcarate-Peril MA; Shrubsole MJ; Dai Q · The American journal of clinical nutrition · 2025
    Randomized trial240 participantsDigestive Health forMagnesium
  69. Total magnesium intake and risk of frailty in older women.
    Struijk EA; Fung TT; Bischoff-Ferrari HA; Willett WC; Lopez-Garcia E · Journal of cachexia, sarcopenia and muscle · 2024
    Cohort study81,524 participantsEnergy forMagnesium
  70. Red blood cell magnesium and chronic fatigue syndrome.
    Cox IM; Campbell MJ; Dowson D · Lancet (London, England) · 1991
    Randomized trial32 participantsEnergy forMagnesium
  71. Exercise, magnesium and immune function.
    Laires MJ; Monteiro C · Magnesium research · 2008
    Narrative reviewEnergy forMagnesium
  72. Perioperative systemic magnesium to minimize postoperative pain: a meta-analysis of randomized controlled trials.
    De Oliveira GS; Castro-Alves LJ; Khan JH; McCarthy RJ · Anesthesiology · 2013
    Meta-analysis1,257 participants20 studies pooledGeneral Health forMagnesium
  73. Long-term outcome after intravenous magnesium sulphate in suspected acute myocardial infarction: the second Leicester Intravenous Magnesium Intervention Trial (LIMIT-2).
    Woods KL; Fletcher S · Lancet (London, England) · 1994
    Randomized trial2,316 participantsGeneral Health forMagnesium
  74. Association of magnesium sulfate use with mortality in critically ill patients with sepsis: a retrospective propensity score-matched cohort study.
    Gu WJ; Duan XJ; Liu XZ; Cen Y; Tao LY; Lyu J; Yin HY · British journal of anaesthesia · 2023
    Cohort study10,999 participantsGeneral Health forMagnesium
  75. Hypomagnesemia and Mortality in Incident Hemodialysis Patients.
    Li L; Streja E; Rhee CM; Mehrotra R; Soohoo M; Brunelli SM; Kovesdy CP; Kalantar-Zadeh K · American journal of kidney diseases : the official journal of the National Kidney Foundation · 2016
    Cohort study9,359 participantsGeneral Health forMagnesium
  76. The effects of magnesium supplementation on abnormal uterine bleeding, alopecia, quality of life, and acne in women with polycystic ovary syndrome: a randomized clinical trial.
    Jaripur M; Ghasemi-Tehrani H; Askari G; Gholizadeh-Moghaddam M; Clark CCT; Rouhani MH · Reproductive biology and endocrinology : RB&E · 2022
    Randomized trial64 participantsGeneral Health forMagnesium
  77. Effects of magnesium supplementation on improving hyperglycemia, hypercholesterolemia, and hypertension in type 2 diabetes: A pooled analysis of 24 randomized controlled trials.
    Xu L; Li X; Wang X; Xu M · Frontiers in nutrition · 2023
    Meta-analysis1,325 participants24 studies pooledHeart Health forMagnesium
  78. The effect of lowering blood pressure by magnesium supplementation in diabetic hypertensive adults with low serum magnesium levels: a randomized, double-blind, placebo-controlled clinical trial.
    Guerrero-Romero F; Rodríguez-Morán M · Journal of human hypertension · 2009
    Randomized trial82 participantsHeart Health forMagnesium
  79. Positive effects of magnesium supplementation in metabolic syndrome.
    Kisters S; Kisters K; Werner T; Vormann J; Tokmak F; Westhoff T; Gröber U; Predel HG; Reuter H · International journal of clinical pharmacology and therapeutics · 2024
    Randomized trial54 participantsHeart Health forMagnesium
  80. The effects of magnesium L-threonate (Magtein®) on cognitive performance and sleep quality in adults: a randomised, double-blind, placebo-controlled trial.
    Lopresti AL; Smith SJ · Frontiers in nutrition · 2026
    Randomized trial100 participantsMental Focus Productivity Boost forMagnesium
  81. Peripartum neuroactive steroid and γ-aminobutyric acid profiles in women at-risk for postpartum depression.
    Deligiannidis KM; Kroll-Desrosiers AR; Mo S; Nguyen HP; Svenson A; Jaitly N; Hall JE; Barton BA; Rothschild AJ; Shaffer SA · Psychoneuroendocrinology · 2017
    Cohort study56 participantsMood Support forGABA
  82. The role of neurotransmitters in mediating the relationship between brain alterations and depressive symptoms in patients with inflammatory bowel disease.
    Wang J; Liu G; Xu K; Ai K; Huang W; Zhang J · Human brain mapping · 2023
    Case-control study69 participantsMood Support forGABA
  83. Occipital gamma-aminobutyric acid and glutamate-glutamine alterations in major depressive disorder: An mrs study and meta-analysis.
    Truong V; Cheng PZ; Lee HC; Lane TJ; Hsu TY; Duncan NW · Psychiatry research. Neuroimaging · 2021
    Observational studyMood Support forGABA
  84. Systematic review of gamma-aminobutyric-acid inhibitory deficits across the reproductive life cycle.
    Vigod SN; Strasburg K; Daskalakis ZJ; Blumberger DM · Archives of women's mental health · 2014
    Systematic review11 studies pooledMood Support forGABA
  85. Protective role of antioxidant supplementation for depression and anxiety: A meta-analysis of randomized clinical trials.
    Wang H; Jin M; Xie M; Yang Y; Xue F; Li W; Zhang M; Li Z; Li X; Jia N; Liu Y; Cui X; Hu G; Dong L; Wang G; Yu Q · Journal of affective disorders · 2023
    Meta-analysis4,049 participants52 studies pooledMood Support forMagnesium
  86. Magnesium supplementation as an adjunct to fluoxetine therapy for depression.
    Walyddaini AS; Lisal ST; Ilhamuddin; Zainuddin AA; Tanra AJ; Widianingsih Y; Syamsuddin S · East Asian archives of psychiatry : official journal of the Hong Kong College of Psychiatrists = Dong Ya jing shen ke xue zhi : Xianggang jing shen ke yi xue yuan qi kan · 2026
    Randomized trial40 participantsMood Support forMagnesium
  87. The effects of magnesium supplementation on serum level of brain derived neurotrophic factor (BDNF) and depression status in patients with depression.
    Afsharfar M; Shahraki M; Shakiba M; Asbaghi O; Dashipour A · Clinical nutrition ESPEN · 2021
    Randomized trial46 participantsMood Support forMagnesium
  88. Dietary magnesium intake and risk of depression.
    Sun C; Wang R; Li Z; Zhang D · Journal of affective disorders · 2019
    Cross-sectional study17,730 participantsMood Support forMagnesium
  89. 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
  90. 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
  91. Cross-sectional and longitudinal associations of magnesium intake and cognition in the Healthy Aging Longitudinal Study in Taiwan.
    Tao MH; Chuang SC; Wu IC; Chan HT; Cheng CW; Chen HL; Lee MM; Chang HY; Hsiung CA; Hsu CC · European journal of nutrition · 2024
    Cohort study5,663 participantsProductivity Boost forMagnesium
  92. Low levels of serum magnesium are associated with poststroke cognitive impairment in ischemic stroke patients.
    Tu X; Qiu H; Lin S; He W; Huang G; Zhang X; Wu Y; He J · Neuropsychiatric disease and treatment · 2022
    Cohort study327 participantsProductivity Boost forMagnesium
  93. Hypomagnesemia and Acute Cognitive Decline in Older Adults: An Evaluation of Clinical Practice and Cognitive Outcomes at a National Health Service (NHS) Trust in England.
    Lai XN; Sadhwani V; Ng WM; Gani A · Cureus · 2025
    Cohort study667 participantsProductivity Boost forMagnesium
  94. Magnesium Depletion Score as a Novel Predictor of Cognitive Impairment: A Population-Based Cross-Sectional Study From NHANES.
    Chen M; Xue R; Zhang M; Zhang J; Zheng J; Ye D; Sun J · Journal of the American Medical Directors Association · 2025
    Cross-sectional study2,768 participantsProductivity Boost forMagnesium
  95. Cognitive and affective effects of L-Theanine: a systematic review and meta-analysis of 31 randomized trials.
    Gerolymos C; Saddier E; Boyer L; Fond G · Molecular psychiatry · 2026
    Meta-analysis1,168 participants31 studies pooledProductivity Boost forTheanine
  96. Effects of L-theanine on cognition, mood and sleep: evidence from human trials.
    Cotter J; Kilpatrick HE · Frontiers in nutrition · 2026
    Narrative reviewProductivity Boost forTheanine
  97. Safety and Efficacy of Gamma-Aminobutyric Acid from Fermented Rice Germ in Patients with Insomnia Symptoms: A Randomized, Double-Blind Trial.
    Byun JI; Shin YY; Chung SE; Shin WC · Journal of clinical neurology (Seoul, Korea) · 2020
    Randomized trial40 participantsSleep Support forGABA
  98. Analysis of the Effects of Known Sleep-Support Supplements in Relation to Life Habits, Sleep Conditions, and Sleep Problems.
    Imafuku F; Yamamoto K; Tanaka E; Aoki R; Nishino S · Nutrients · 2023
    Randomized trial160 participantsSleep Support forGABA
  99. Reduced γ-aminobutyric acid in occipital and anterior cingulate cortices in primary insomnia: a link to major depressive disorder?
    Plante DT; Jensen JE; Schoerning L; Winkelman JW · Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2012
    Case-control study40 participantsSleep Support forGABA
  100. Effects of magnesium and potassium supplementation on insomnia and sleep hormones in patients with diabetes mellitus.
    Khalid S; Bashir S; Mehboob R; Anwar T; Ali M; Hashim M; Waseem H; Basharat S · Frontiers in endocrinology · 2024
    Randomized trial320 participantsSleep Support forMagnesium
  101. Association of magnesium intake with sleep duration and sleep quality: findings from the CARDIA study.
    Zhang Y; Chen C; Lu L; Knutson KL; Carnethon MR; Fly AD; Luo J; Haas DM; Shikany JM; Kahe K · Sleep · 2022
    Cohort study3,964 participantsSleep Support forMagnesium
  102. Lidocaine vs. magnesium: effect on analgesia after a laparoscopic cholecystectomy.
    Saadawy IM; Kaki AM; Abd El Latif AA; Abd-Elmaksoud AM; Tolba OM · Acta anaesthesiologica Scandinavica · 2010
    Randomized trial120 participantsSleep Support forMagnesium
  103. The effect of magnesium supplementation on primary insomnia in elderly: A double-blind placebo-controlled clinical trial.
    Abbasi B; Kimiagar M; Sadeghniiat K; Shirazi MM; Hedayati M; Rashidkhani B · Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2013
    Randomized trial46 participantsSleep Support forMagnesium
  104. A randomized, double-blind, placebo-controlled, multicenter study assessing the efficacy of magnesium oxide monohydrate in the treatment of nocturnal leg cramps.
    Barna O; Lohoida P; Holovchenko Y; Bazylevych A; Velychko V; Hovbakh I; Bula L; Shechter M · Nutrition journal · 2021
    Randomized trial175 participantsSleep Support forMagnesium
  105. 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
  106. 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
  107. 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
  108. Relieving occupational fatigue by consumption of a beverage containing γ-amino butyric acid.
    Kanehira T; Nakamura Y; Nakamura K; Horie K; Horie N; Furugori K; Sauchi Y; Yokogoshi H · Journal of nutritional science and vitaminology · 2011
    Clinical trial30 participantsStress Relief forGABA
  109. Magnesium and anabolic hormones in older men.
    Maggio M; Ceda GP; Lauretani F; Cattabiani C; Avantaggiato E; Morganti S; Ablondi F; Bandinelli S; Dominguez LJ; Barbagallo M; Paolisso G; Semba RD; Ferrucci L · International journal of andrology · 2012
    Cohort study399 participantsTestosterone Support forMagnesium
  110. Analysis of the relationship between the blood concentration of several metals, macro- and micronutrients and endocrine disorders associated with male aging.
    Rotter I; Kosik-Bogacka DI; Dołęgowska B; Safranow K; Kuczyńska M; Laszczyńska M · Environmental geochemistry and health · 2017
    Cross-sectional study313 participantsTestosterone Support forMagnesium
  111. Effect of magnesium supplementation in improving hyperandrogenism, hirsutism, and sleep quality in women with polycystic ovary syndrome: A randomized, placebo-controlled clinical trial.
    Gholizadeh-Moghaddam M; Ghasemi-Tehrani H; Askari G; Jaripur M; Clark CCT; Rouhani MH · Health science reports · 2024
    Randomized trial64 participantsTestosterone Support forMagnesium
  112. The effects of trace element supplementation on glycolipid metabolism in PCOS: a systematic review and meta-analysis.
    Yang L; Gao Y; Zhao W; Qi Y; Duo X; Wang H · Frontiers in nutrition · 2025
    Meta-analysis1,600 participants25 studies pooledTestosterone Support forMagnesium
  113. Effects of magnesium supplementation on testosterone levels of athletes and sedentary subjects at rest and after exhaustion.
    Cinar V; Polat Y; Baltaci AK; Mogulkoc R · Biological trace element research · 2011
    Non-randomized trial20 participantsTestosterone Support forMagnesium