Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Effectiveness of Valerian on insomnia: a meta-analysis of randomized placebo-controlled trials.
Fernández-San-Martín MI; Masa-Font R; Palacios-Soler L; Sancho-Gómez P; Calbó-Caldentey C; Flores-Mateo G · Sleep medicine · 2010
Meta-analysis18 studies pooledflagSleep Support forscienceValerian
- Efficacy and tolerability of valerian extract LI 156 compared with oxazepam in the treatment of non-organic insomnia--a randomized, double-blind, comparative clinical study.
Ziegler G; Ploch M; Miettinen-Baumann A; Collet W · European journal of medical research · 2003
Randomized trial202 participantsflagSleep Support forscienceValerian
- 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 pooledflagSleep Support forscienceTheanine
- 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 participantsflagSleep Support forscienceTheanine
- Current Evidence on Common Dietary Supplements for Sleep Quality.
Esquivel MK; Ghosn B · American journal of lifestyle medicine · 2025
Narrative reviewflagSleep Support forscienceTheanine
- 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 participantsflagStress Relief forscienceTheanine
- 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 participantsflagStress Relief forscienceTheanine
- 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 participantsflagMood Support forscienceTheanine
- 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 pooledflagMood Support flagProductivity Boost forscienceTheanine
- Antenatal magnesium sulfate and neuroprotection.
Doyle LW · Current opinion in pediatrics · 2012
Meta-analysis6,145 participants5 studies pooledflagBrain Health forscienceMagnesium
- 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 participantsflagBrain Health forscienceMagnesium
- 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 pooledflagBrain Health forscienceMagnesium
- 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 pooledflagBrain Health forscienceMagnesium
- Magnesium sulfate and fetal neuroprotection: overview of clinical evidence.
Chollat C; Marret S · Neural regeneration research · 2020
Narrative reviewflagBrain Health forscienceMagnesium
- 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 participantsflagBrain Health flagCognitive Support flagSleep Support forscienceTheanine
- 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 trialflagBrain Health flagStress Relief forscienceTheanine
- 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 pooledflagBrain Health flagCognitive Support flagMental Focus forscienceTheanine
- 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 participantsflagBrain Health flagCognitive Support forscienceTheanine
- 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 trialflagBrain Health flagMental Focus flagProductivity Boost forscienceTheanine
- 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 pooledflagCognitive Support forscienceMagnesium
- 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 pooledflagCognitive Support forscienceMagnesium
- 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 participantsflagCognitive Support forscienceMagnesium
- 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 participantsflagCognitive Support forscienceMagnesium
- Could intraoperative magnesium sulphate protect against postoperative cognitive dysfunction?
Hassan WF; Tawfik MH; Nabil TM; Abd Elkareem RM · Minerva anestesiologica · 2021
Randomized trial80 participantsflagCognitive Support forscienceMagnesium
- 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 participantsflagCognitive Support forscienceTheanine
- Acute effects of theanine, caffeine and theanine-caffeine combination on attention.
Kahathuduwa CN; Dassanayake TL; Amarakoon AMT; Weerasinghe VS · Nutritional neuroscience · 2018
Clinical trial20 participantsflagCognitive Support flagMental Focus forscienceTheanine
- 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 participantsflagMental Focus forscienceMagnesium
- 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 participantsflagMental Focus forscienceMagnesium
- 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-analysisflagMental Focus forscienceMagnesium
- 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 participantsflagMental Focus forscienceMagnesium
- 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 participantsflagMental Focus flagProductivity Boost forscienceMagnesium
- 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 participantsflagMental Focus flagProductivity Boost flagStress Relief forscienceTheanine
- 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 participantsflagMental Focus forscienceTheanine
- 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 pooledflagMood Support forscienceMagnesium
- 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 participantsflagMood Support flagStress Relief forscienceMagnesium
- 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 participantsflagMood Support forscienceMagnesium
- 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 participantsflagMood Support forscienceMagnesium
- Dietary magnesium intake and risk of depression.
Sun C; Wang R; Li Z; Zhang D · Journal of affective disorders · 2019
Cross-sectional study17,730 participantsflagMood Support forscienceMagnesium
- 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 participantsflagMood Support flagStress Relief forscienceTheanine
- 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 pooledflagMood Support forscienceTheanine
- 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 participantsflagMood Support flagStress Relief forscienceTheanine
- 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 participantsflagMood Support forscienceTheanine
- Standardized Extract of Valeriana officinalis Improves Overall Sleep Quality in Human Subjects with Sleep Complaints: A Randomized, Double-Blind, Placebo-Controlled, Clinical Study.
Chandra Shekhar H; Joshua L; Thomas JV · Advances in therapy · 2024
Randomized trial80 participantsflagMood Support flagSleep Support flagStress Relief forscienceValerian
- Chemotypic diversity and neuroactive potential of Valeriana jatamansi Jones: a systematic review on phytochemistry, pharmacology and standardisation challenges.
Nisar S; Jan N; Hassan I; Andleeb L; Shabir PA · Natural product research · 2026
Meta-analysis12 studies pooledflagMood Support forscienceValerian
- Valerian Root in Treating Sleep Problems and Associated Disorders-A Systematic Review and Meta-Analysis.
Shinjyo N; Waddell G; Green J · Journal of evidence-based integrative medicine · 2021
Meta-analysis6,894 participants60 studies pooledflagMood Support forscienceValerian
- Assessment of Valeriana officinalis l. (Valerian) for Conscious Sedation of Patients During the Extraction of Impacted Mandibular Third Molars: A Randomized, Split-Mouth, Double-Blind, Crossover Study.
Farah GJ; Ferreira GZ; Danieletto-Zanna CF; Luppi CR; Jacomacci WP · Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons · 2020
Randomized trial20 participantsflagMood Support forscienceValerian
- Effectiveness and safety of oral sedation in adult patients undergoing dental procedures: a systematic review.
Araújo JO; Bergamaschi CC; Lopes LC; Guimarães CC; de Andrade NK; Ramacciato JC; Motta RHL · BMJ open · 2021
Systematic review327 participants12 studies pooledflagMood Support flagStress Relief forscienceValerian
- 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 participantsflagProductivity Boost forscienceMagnesium
- 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 participantsflagProductivity Boost forscienceMagnesium
- 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 participantsflagProductivity Boost forscienceMagnesium
- 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 participantsflagProductivity Boost forscienceMagnesium
- Effects of L-theanine on cognition, mood and sleep: evidence from human trials.
Cotter J; Kilpatrick HE · Frontiers in nutrition · 2026
Narrative reviewflagProductivity Boost forscienceTheanine
- 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 participantsflagProductivity Boost forscienceTheanine
- 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 participantsflagSleep Support forscienceMagnesium
- 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 participantsflagSleep Support forscienceMagnesium
- 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 participantsflagSleep Support forscienceMagnesium
- 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 participantsflagSleep Support forscienceMagnesium
- 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 participantsflagSleep Support forscienceMagnesium
- 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 participantsflagSleep Support forscienceTheanine
- In Search of a Safe Natural Sleep Aid.
Rao TP; Ozeki M; Juneja LR · Journal of the American College of Nutrition · 2016
Narrative reviewflagSleep Support forscienceTheanine
- Comparison the effect of valerian and gabapentin on RLS and sleep quality in hemodialysis patients: A randomized clinical trial.
Hajizadeh I; Jamshidi M; Kazemi M; Kargar H; Sadeghi T · Therapeutic apheresis and dialysis : official peer-reviewed journal of the International Society for Apheresis, the Japanese Society for Apheresis, the Japanese Society for Dialysis Therapy · 2023
Randomized trial40 participantsflagSleep Support forscienceValerian
- Effects of a Valerian-Hops Extract Combination (Ze 91019) on Sleep Duration and Daytime Cognitive and Psychological Parameters in Occasional Insomnia: A Randomized Controlled Feasibility Trial.
Schicktanz N; Gerhards C; Schlitt T; Aerni A; Müggler E; de Quervain D; Papassotiropoulos A; Boonen G; Drewe J; Butterweck V · Brain and behavior · 2025
Randomized trial40 participantsflagSleep Support forscienceValerian
- Valerian for sleep: a systematic review and meta-analysis.
Bent S; Padula A; Moore D; Patterson M; Mehling W · The American journal of medicine · 2006
Meta-analysis1,093 participants16 studies pooledflagSleep Support forscienceValerian
- 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 participantsflagStress Relief forscienceMagnesium
- 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 participantsflagStress Relief forscienceMagnesium
- 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 participantsflagStress Relief forscienceMagnesium
- 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 trialflagStress Relief forscienceMagnesium
- Effects of Passiflora incarnata and Valeriana officinalis in the control of anxiety due to tooth extraction: a randomized controlled clinical trial.
Velasquez ACA; Tsuji M; Dos Santos Cordeiro L; Petinati MFP; Rebellato NLB; Sebastiani AM; da Costa DJ; Scariot R · Oral and maxillofacial surgery · 2024
Randomized trial54 participantsflagStress Relief forscienceValerian
- Effect of kava and valerian on human physiological and psychological responses to mental stress assessed under laboratory conditions.
Cropley M; Cave Z; Ellis J; Middleton RW · Phytotherapy research : PTR · 2002
Non-randomized trial54 participantsflagStress Relief forscienceValerian
- Stress-induced insomnia treated with kava and valerian: singly and in combination.
Wheatley D · Human psychopharmacology · 2019
Single-arm trial24 participantsflagStress Relief forscienceValerian