Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- A new perspective on vitamin B12 deficiency in rheumatology: a case-based review.
Dułak NA; Rytlewska M; Jaskólska M; Chmielewski M · Rheumatology international · 2024
Case series3 participantsflagEnergy forscienceVitamin B12
- Effects of Vitamin B12 Supplementation on Cognitive Function, Depressive Symptoms, and Fatigue: A Systematic Review, Meta-Analysis, and Meta-Regression.
Markun S; Gravestock I; Jäger L; Rosemann T; Pichierri G; Burgstaller JM · Nutrients · 2021
Meta-analysis6,276 participants16 studies pooledflagEnergy forscienceVitamin B12
- Patients' experiences with methylcobalamin injections in amyotrophic lateral sclerosis.
Zubair AS; Saab L; Scharer K; Khokhar B · Brain circulation · 2024
Qualitative study5 participantsflagEnergy forscienceVitamin B12
- Cobalamin deficiency: clinical picture and radiological findings.
Briani C; Dalla Torre C; Citton V; Manara R; Pompanin S; Binotto G; Adami F · Nutrients · 2014
Narrative reviewflagEnergy forscienceVitamin B12
- Vitamin B12 Deficiency: Common Questions and Answers.
Patel H; McGuirk R · American family physician · 2025
Narrative reviewflagEnergy forscienceVitamin B12
- Intakes of Folate, Vitamin B6, and Vitamin B12 in Relation to All-Cause and Cause-Specific Mortality: A National Population-Based Cohort.
Bo Y; Xu H; Zhang H; Zhang J; Wan Z; Zhao X; Yu Z · Nutrients · 2022
Cohort study55,569 participantsflagGeneral Health forscienceFolate
- The responsiveness of plasma homocysteine to small increases in dietary folic acid: a primary care study.
Schorah CJ; Devitt H; Lucock M; Dowell AC · European journal of clinical nutrition · 1998
Randomized trial119 participantsflagGeneral Health forscienceFolate
- Associations of Serum Folate and Homocysteine Concentrations with All-Cause, Cardiovascular Disease, and Cancer Mortality in Men and Women in Korea: the Cardiovascular Disease Association Study.
Song S; Song BM; Park HY · The Journal of nutrition · 2023
Cohort study21,260 participantsflagGeneral Health forscienceFolate
- The concept of folic acid supplementation and its role in prevention of neural tube defect among pregnant women: PRISMA.
Seyoum Tola F · Medicine · 2024
Systematic reviewflagGeneral Health forscienceFolate
- Systematic review of adverse health outcomes associated with high serum or red blood cell folate concentrations.
Colapinto CK; O'Connor DL; Sampson M; Williams B; Tremblay MS · Journal of public health (Oxford, England) · 2017
Systematic review71,847 participants46 studies pooledflagGeneral Health forscienceFolate
- Oral Vitamin B12 versus Placebo for the Prevention of Chemotherapy-Induced Peripheral Neuropathy in Gynecological Cancer Patients: A Randomized, Double-Blind, Placebo-Controlled Trial.
Insin P; Chaiwongsa T; Prueksaritanond N · Asian Pacific journal of cancer prevention : APJCP · 2026
Randomized trial40 participantsflagGeneral Health forscienceVitamin B12
- Vitamin B12 Supplementation in Diabetic Neuropathy: A 1-Year, Randomized, Double-Blind, Placebo-Controlled Trial.
Didangelos T; Karlafti E; Kotzakioulafi E; Margariti E; Giannoulaki P; Batanis G; Tesfaye S; Kantartzis K · Nutrients · 2021
Randomized trial90 participantsflagGeneral Health forscienceVitamin B12
- A single-center randomized controlled trial of local methylcobalamin injection for subacute herpetic neuralgia.
Xu G; Lv ZW; Feng Y; Tang WZ; Xu GX · Pain medicine (Malden, Mass.) · 2014
Randomized trial98 participantsflagGeneral Health forscienceVitamin B12
- Local Injection of Methylcobalamin Combined with Lidocaine for Acute Herpetic Neuralgia.
Xǔ G; Xu S; Tang WZ; Xú G; Cheng C; Xu J · Pain medicine (Malden, Mass.) · 2017
Randomized trial204 participantsflagGeneral Health forscienceVitamin B12
- The Effect of Vitamin B12 and Folic Acid Supplementation on Serum Homocysteine, Anemia Status and Quality of Life of Patients with Multiple Sclerosis.
Nozari E; Ghavamzadeh S; Razazian N · Clinical nutrition research · 2022
Clinical trial50 participantsflagGeneral Health forscienceVitamin B12
- Dietary intake and blood concentrations of antioxidants and the risk of cardiovascular disease, total cancer, and all-cause mortality: a systematic review and dose-response meta-analysis of prospective studies.
Aune D; Keum N; Giovannucci E; Fadnes LT; Boffetta P; Greenwood DC; Tonstad S; Vatten LJ; Riboli E; Norat T · The American journal of clinical nutrition · 2019
Meta-analysis69 studies pooledflagGeneral Health forscienceVitamin C
- Scientific Opinion on the substantiation of a health claim related to vitamin C and increasing non haem iron absorption pursuant to Article 14 of Regulation (EC) No 1924/2006.
EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) · EFSA journal. European Food Safety Authority · 2026
Guideline / consensusflagGeneral Health forscienceVitamin C
- Vitamin C Depletion and All-Cause Mortality in Renal Transplant Recipients.
Sotomayor CG; Eisenga MF; Gomes Neto AW; Ozyilmaz A; Gans ROB; Jong WHA; Zelle DM; Berger SP; Gaillard CAJM; Navis GJ; Bakker SJ · Nutrients · 2018
Cohort study598 participantsflagGeneral Health forscienceVitamin C
- Associations of Serum Biomarkers of Fruit and Vegetable Intake With the Risk of Cause-Specific Mortality and All-Cause Mortality: A National Prospective Cohort Study.
Pu L; Zhang R; Wang X; Zhao T; Sun H; Han L · Frontiers in nutrition · 2022
Cohort study12,530 participantsflagGeneral Health forscienceVitamin C
- Relation between plasma ascorbic acid and mortality in men and women in EPIC-Norfolk prospective study: a prospective population study. European Prospective Investigation into Cancer and Nutrition.
Khaw KT; Bingham S; Welch A; Luben R; Wareham N; Oakes S; Day N · Lancet (London, England) · 2001
Cohort study19,496 participantsflagGeneral Health forscienceVitamin C
- Hair Loss After Metabolic and Bariatric Surgery: a Systematic Review and Meta-analysis.
Zhang W; Fan M; Wang C; Mahawar K; Parmar C; Chen W; Yang W; Global Bariatric Research Collaborative · Obesity surgery · 2021
Meta-analysis2,538 participants18 studies pooledflagHair Health forscienceFolate
- Quantitative Analysis of Selected Circulating Hematological Biomarkers, Essential Minerals, Vitamins, and Thyroid Hormones in Females Affected by Hair Loss.
Al-Fawaeir S; Al-Odat I · Diseases (Basel, Switzerland) · 2025
Case-control study200 participantsflagHair Health forscienceFolate flagHair Health forscienceVitamin B12
- Twelve weeks of protracted venous infusion of fluorouracil (5-FU) is as effective as 6 months of bolus 5-FU and folinic acid as adjuvant treatment in colorectal cancer.
Saini A; Norman AR; Cunningham D; Chau I; Hill M; Tait D; Hickish T; Iveson T; Lofts F; Jodrell D; Ross PJ; Oates J · British journal of cancer · 2003
Randomized trialflagHair Health forscienceFolate
- Role of oxaliplatin combined with 5-fluorouracil and folinic acid in the first- and second-line treatment of advanced colorectal cancer.
Jonker D; Rumble RB; Maroun J; Gastrointestinal Cancer Disease Site Groupof Cancer Care Ontario’s Program in Evidence-Based Care · Current oncology (Toronto, Ont.) · 2012
Randomized trialflagHair Health forscienceFolate
- Phase I-II study of vinorelbine in combination with 5-fluorouracil and folinic acid as first-line chemotherapy in metastatic breast cancer: a regimen with a low subjective toxic burden.
Nolè F; de Braud F; Aapro M; Minchella I; De Pas TM; Zampino MG; Monti S; Andreoni G; Goldhirsch A · Annals of oncology : official journal of the European Society for Medical Oncology · 1997
Randomized trialflagHair Health forscienceFolate
- Factors Associated with Premature Hair Graying in a Young Indian Population.
Chakrabarty S; Krishnappa PG; Gowda DG; Hiremath J · International journal of trichology · 2016
Case-control study74 participantsflagHair Health forscienceVitamin B12
- Risk Factors for Pediatric Alopecia Areata: Clinical and Biochemical Findings from a Case - Control Study.
İritaş SY · Dermatology practical & conceptual · 2026
Case-control study600 participantsflagHair Health forscienceVitamin B12
- Hair Loss After Laparoscopic Sleeve Gastrectomy.
Katsogridaki G; Tzovaras G; Sioka E; Perivoliotis K; Zachari E; Magouliotis D; Tasiopoulou V; Chatedaki C; Zacharoulis D · Obesity surgery · 2019
Cohort study50 participantsflagHair Health forscienceVitamin B12
- Demographic Characteristics and Association of Serum Vitamin B12, Ferritin and Thyroid Function with Premature Canities in Indian Patients from an Urban Skin Clinic of North India: A Retrospective Analysis of 71 Cases.
Sonthalia S; Priya A; Tobin DJ · Indian journal of dermatology · 2022
Cross-sectional study71 participantsflagHair Health forscienceVitamin B12
- Management of hair loss associated with endocrine therapy in patients with breast cancer: an overview.
Karatas F; Sahin S; Sever AR; Altundag K · SpringerPlus · 2016
Narrative reviewflagHair Health forscienceVitamin C
- Elucidating causal relationships of diet-derived circulating antioxidants and the risk of non-scarring alopecia: A Mendelian randomization study.
Ba Y; Shen L; Peng X; Zhang Y; Wang J · Medicine · 2024
Methods validation study201,019 participantsflagHair Health forscienceVitamin C
- Alterations of plasma antioxidants and mitochondrial DNA mutation in hair follicles of smokers.
Liu CS; Chen HW; Lii CK; Tsai CS; Kuo CL; Wei YH · Environmental and molecular mutagenesis · 2002
Observational studyflagHair Health forscienceVitamin C
- Removal of synthetic hair dye using formamidine sulfinic acid and other sulfinate precursors.
Hawkes JA; Lewis DM; Mama J; Murray J · International journal of cosmetic science · 2026
Methods validation studyflagHair Health forscienceVitamin C
- A Zinc Sulphate-Resistant Acrodermatitis Enteropathica Patient with a Novel Mutation in SLC39A4 Gene.
Kilic M; Taskesen M; Coskun T; Gürakan F; Tokatli A; Sivri HS; Dursun A; Schmitt S; Küry S · JIMD reports · 2013
Case reportflagHair Health forscienceVitamin C
- Effects of Folic Acid and Vitamin B12, Alone and in Combination on Cognitive Function and Inflammatory Factors in the Elderly with Mild Cognitive Impairment: A Single-blind Experimental Design.
Ma F; Zhou X; Li Q; Zhao J; Song A; An P; Du Y; Xu W; Huang G · Current Alzheimer research · 2020
Randomized trial240 participantsflagProductivity Boost forscienceVitamin B12
- Effects of Physical Activity and Micronutrients on Cognitive Performance in Children Aged 6 to 11 Years: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
Meli AM; Ali A; Mhd Jalil AM; Mohd Yusof H; Tan MMC · Medicina (Kaunas, Lithuania) · 2022
Meta-analysisflagProductivity Boost forscienceVitamin B12
- Cognitive function in an elderly population: interaction between vitamin B12 status, depression, and apolipoprotein E ε4: the Hordaland Homocysteine Study.
Vogiatzoglou A; Smith AD; Nurk E; Drevon CA; Ueland PM; Vollset SE; Nygaard HA; Engedal K; Tell GS; Refsum H · Psychosomatic medicine · 2013
Cross-sectional study1,935 participantsflagProductivity Boost forscienceVitamin B12
- Cognitive profile and inflammatory markers in children and adolescents with specific learning disorder: a cross-sectional study.
Balatacı U; Ay B · Frontiers in pediatrics · 2026
Case-control study108 participantsflagProductivity Boost forscienceVitamin B12
- Association between vitamin B12 levels and cognitive impairment in older adults.
Aguilar-Navarro SG; Carbajal-Silva JC; Palacios-Hernández MGI; Gutiérrez-Gutierrez LA; Ávila-Funes JA; Mimenza-Alvarado AJ · Gaceta medica de Mexico · 2023
Cross-sectional study241 participantsflagProductivity Boost forscienceVitamin B12
- Effects of vitamin B12 on performance and circadian rhythm in normal subjects.
Mayer G; Kröger M; Meier-Ewert K · Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 1997
Randomized trial20 participantsflagProductivity Boost forscienceVitamin B12
- Prenatal vitamin B12 status and cognitive functioning in children at 4 years of age: The ECLIPSES Study.
Cruz-Rodríguez J; Canals-Sans J; Hernández-Martínez C; Voltas-Moreso N; Arija V · Maternal & child nutrition · 2023
Cohort study249 participantsflagProductivity Boost forscienceVitamin B12
- Dietary intakes and biomarker patterns of folate, vitamin B6, and vitamin B12 can be associated with cognitive impairment by hypermethylation of redox-related genes NUDT15 and TXNRD1.
An Y; Feng L; Zhang X; Wang Y; Wang Y; Tao L; Qin Z; Xiao R · Clinical epigenetics · 2020
Cohort study2,533 participantsflagProductivity Boost forscienceVitamin B12
- Homocysteine, folate, and vitamins B6 and B12 blood levels in relation to cognitive performance: the Maine-Syracuse study.
Elias MF; Robbins MA; Budge MM; Elias PK; Brennan SL; Johnston C; Nagy Z; Bates CJ · Psychosomatic medicine · 2008
Cross-sectional study812 participantsflagProductivity Boost forscienceVitamin B12