Burst Vitamin B For Kids

Burst Vitamin B For Kids

JoySpring4.8 (670 ratings)
Format:Liquid Quantity: 60 Liquid(s) · 60 servings
Goals
$26.99 $0.44 per serving
Pure FormulasLowest$24.99iHerb$26.99

About this product

Riboflavin, vitamin B6, methylcobalamin, and pantothenic acid form a concise liquid B-vitamin blend. The drop format can help caregivers tailor use and avoids swallowing tablets.

B12 reaches 1,200 mcg, an amount far beyond ordinary childhood nutritional needs. The formula also omits thiamine, folate, niacin, and biotin, so it should not be treated as a complete B complex.

The product may fit a child with a defined need under age-appropriate guidance. It is not an obvious everyday energy supplement for otherwise well-nourished children.

Who is it for
  • Children with a defined B-vitamin need
  • Caregivers who prefer measured liquid supplements
Best for
  • Age-adjusted liquid supplementation
  • Children unable to swallow tablets

Pros

  • Uses methylcobalamin
  • Clear active amounts
  • Adjustable liquid format
  • Concise ingredient profile

Cons

  • B12 amount is very high for children
  • Not a complete B complex
  • Uses pyridoxine hydrochloride
  • Caregiver measurement is required

Warnings

  • The 1,200 mcg B12 serving is far above routine childhood needs and should be age-appropriate.
  • Caregivers should measure drops exactly and keep the bottle out of children’s reach.
  • Vitamin B6 exposure should be counted if the child also uses fortified foods or another multivitamin.

Product analysis

74 out of 100
A clear, adjustable liquid with four B vitamins and methylcobalamin. Extremely high B12 for a child and incomplete coverage are important limits.

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

Nutrient quality81

The formula uses bioactive B12 with related B vitamins at meaningful amounts. The high B12 concentration is poorly matched to routine child use without age-specific guidance.

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Ingredient transparency84

Active names and amounts are clearly stated, with no hidden proprietary dose. Complete intake directions and a full inactive-ingredient list are not included in the supplied data.

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Customer satisfaction71

Supplied satisfaction metrics indicate a strong result with a meaningful response pool. Detailed experience themes are absent, so recurring complaints and real-world purpose fit remain uncertain.

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Value for money53

Serving value appears weak relative to the disclosed form and amount. Convenience ingredients or minor additions reduce the share of value coming from the core active.

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Format
Liquid
Container
60 Liquid(s)
Per serving
$0.44
Customer rating
4.8 · 670 ratings
Report analysis

Goals

Energy
Energy
Impact
High effect
B+ Ingredient FitF PathwaysB+ EvidenceA+ Formulation Logic
Vitamin B5 · 20 mgRiboflavin · 1.7 mgVitamin B12 · 1200 mcg

Vitamin B12 can help with tiredness and weakness when low B12 is the cause. The other B vitamins here also have nutritional roles, and low levels of B6, riboflavin or pantothenic acid can contribute to fatigue-related problems. Getting enough can therefore matter, but taking extra B vitamins isn't known to increase energy when your intake is already adequate.

How this product is rated for Energy

Ingredient fit85

The declared nutrients can matter when low levels contribute to fatigue. Amounts alone do not show that an individual needs more.
Goal fit
The nutrients relate mainly to adequate nutrition and fatigue associated with low levels.
Dose adequacy
The serving declares 1200 mcg Vitamin B12; the amount alone does not show a need for deficiency correction.

Pathways0

Normal nutrient roles and relief of deficiency-related fatigue do not show an added boost in alertness or cellular energy in well-nourished adults.
Depth
Normal nutrient roles and relief of deficiency-related fatigue do not show an added boost in alertness or cellular energy in well-nourished adults.
Breadth
No separate added energy effect across the listed functions is supported for adults already getting enough.

Evidence81

Vitamin B12 may help fatigue related to low levels, without an additional energy benefit when intake is adequate.
Evidence strength
Vitamin B12 may help fatigue related to low levels, without an additional energy benefit when intake is adequate.
Studied preparation
The nutrient forms do not imply greater fatigue relief than other forms.

Formulation logic100

No particular ingredient conflict or missing partner is identified. The serving amounts do not predict how energetic you will feel.
Partner coverage
No missing partner is identified for the relevant ingredients.
Conflicts
No particular ingredient conflict is identified.
Effective doses
The serving declares 1200 mcg Vitamin B12; the amount alone does not show a need for deficiency correction.
Study evidence
Riboflavin Mixed 6 studies
Vitamin B12 Disputed 14 studies
General Health
General Health
Impact
Moderate effect
A Ingredient FitB PathwaysC EvidenceA+ Formulation Logic
Vitamin B12 · 1200 mcg
Study evidence
Vitamin B12 Adverse 66 studies
Hair Health
Hair Health
Impact
High effect
A Ingredient FitF PathwaysB EvidenceA+ Formulation Logic

The B vitamins here play supporting roles in hair formulas, including vitamin B6's involvement in cysteine metabolism. Those normal nutrient functions don't show that taking them will make hair grow faster or reduce shedding. Whether this particular combination produces a visible improvement in hair remains unclear.

How this product is rated for Hair Health

Ingredient fit95

The B vitamins here play supporting roles in hair formulas, including vitamin B6's involvement in cysteine metabolism.
Goal fit
The B vitamins here play supporting roles in hair formulas, including vitamin B6's involvement in cysteine metabolism.
Dose adequacy
Vitamin B12 1200 mcg per serving. Amount alone doesn't predict a visible hair benefit.

Pathways0

Nutrient roles in hair biology do not automatically translate into less shedding or new growth.
Depth
Nutrient roles in hair biology do not automatically translate into less shedding or new growth.
Breadth
The relevant ingredient roles do not demonstrate a broad effect across different causes of hair loss.

Evidence78

Some preparation identities are unresolved; generic material cannot automatically be expected to produce the effects of a particular extract.
Evidence strength
The B vitamins here play supporting roles in hair formulas, including vitamin B6's involvement in cysteine metabolism.
Studied preparation
Some preparation identities are unresolved; generic material cannot automatically be expected to produce the effects of a particular extract.

Formulation logic100

No particular ingredient conflict is identified in this combination.
Partner coverage
No required companion ingredient is missing for the relevant ingredients; their combination does not by itself show an added hair benefit.
Conflicts
No particular ingredient conflict is identified in this combination.
Effective doses
Vitamin B12 1200 mcg per serving. Comparison amounts aren't minimum effective doses or guarantees of hair growth.
Study evidence
Vitamin B12 Disputed 17 studies
Productivity Boost
Productivity Boost
Impact
High effect
A Ingredient FitF PathwaysB- EvidenceA+ Formulation Logic
Vitamin B12 · 1200 mcgVitamin B12 · 1200 mcgVitamin B6 · 3 mg

Vitamin B12 may help when low levels are causing tiredness, weakness or difficulty concentrating. A shortage can also affect memory, so correcting it has a different purpose from boosting performance when you're already getting enough. Taking extra B12 isn't known to improve everyday productivity in people whose levels are adequate.

How this product is rated for Productivity Boost

Ingredient fit95

Vitamin B12 relates to fatigue and concentration when deficiency is responsible.
Goal fit
Vitamin B12 relates to fatigue and concentration when deficiency is responsible.
Dose adequacy
Vitamin B12: 1200 mcg. Amounts alone do not predict better work output.

Pathways0

B12 addresses deficiency-related symptoms rather than a direct alertness effect.
Depth
B12 addresses deficiency-related symptoms rather than a direct alertness effect.
Breadth
No direct alertness or broad performance effect is identified for B12.

Evidence70

The useful benefit is conditional on nutrient deficiency; extra intake does not imply improved work output.
Evidence strength
The useful benefit is conditional on nutrient deficiency; extra intake does not imply improved work output.
Studied preparation
The nutrient declarations retain their specific amounts and forms; these do not guarantee better productivity.

Formulation logic100

The relevant ingredients do not require an added partner, and no particular conflict is identified.
Partner coverage
The nutrient roles do not require an additional partner ingredient here.
Conflicts
No particular ingredient conflict is identified.
Effective doses
Vitamin B12 supplies 1200 mcg per serving; a high amount does not imply greater work output.
Study evidence
Vitamin B12 Supportive 15 studies
Vitamin B12 No effect 17 studies
Vitamin B6 Disputed 6 studies

Ingredients

IngredientAmount per servingScore
Riboflavin
1.7 mg
Vitamin B6 (Pyridoxine Hydrochloride)
 3 mg
Vitamin B12 (Methylcobalamin)
 1200 mcg 90
Pantothenic Acid (Calcium Pantothenate)
 20 mg 61
Dairy Free Women All Children
Report overview
Vitamin B12 (Methylcobalamin) · 1200 mcg OverallScore90
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD+ Value
Burst Vitamin B For Kids names methylcobalamin and lists 1,200 mcg per serving. The amount and form are explicit, and the cost per 1,000 mcg is moderate; methylcobalamin is one of the forms prioritized in the supplied guide. The label lists one B12 form.
How this ingredient is rated

Active Ingredient Quality & Bioavailability100

The label names methylcobalamin, one of the specific B12 forms prioritized in the supplied guide.
Bioactive B12 Form Selection
The product uses methylcobalamin, a specifically listed B12 form.

Dose, Safety & Label Transparency100

The 1,200 mcg serving amount is in the higher range, and the label links it directly to methylcobalamin.
Therapeutic Dosage Level
The label lists 1,200 mcg, a high serving amount in the supplied ranges.
Label and Form Transparency
The label names methylcobalamin and gives its amount as 1,200 mcg.

Value50

The cost per 1,000 mcg is moderate; methylcobalamin is treated more favorably than cyanocobalamin in the price comparison.
Price per 1,000 mcg B12
The cost per 1,000 mcg is moderate, with a preference for the methylcobalamin form.
View ingredientView products
Vitamin B5 (Calcium Pantothenate) · 20 mg OverallScore61
A Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyF Value
Burst Vitamin B For Kids names calcium pantothenate and lists 20 mg per serving. The source and amount are clear, though the dose is modest and the cost per 500 mg of B5 is high.
How this ingredient is rated

Active Ingredient Quality & Bioavailability90

It names calcium pantothenate, a standard salt form of B5.
Vitamin B5 Chemical Form
The source is calcium pantothenate, not a generic B5 listing.

Dose, Safety & Label Transparency52

The serving amount is clear but modest.
Dosage Potency and Efficacy
At 20 mg, it falls in the supplied basic-intake range.
Label Transparency & Source Clarity
The label names calcium pantothenate and states the B5 amount.

Value20

The cost per 500 mg of B5 is high for this standard form.
Price per 500mg Vitamin B5
The cost per 500 mg is high for calcium pantothenate.
View ingredientView products
Loading alternative details
89 Performance

Methyl B-12 1000 mcg & Methyl Folate 400 mcg plus P-5-P Lemon Flavor

Jarrow Formulas

Methyl B-12 1000 mcg & Methyl Folate 400 mcg plus P-5-P Lemon Flavor offers a more purposeful option because it combines methylcobalamin with methylfolate and active B6. Active B6 and folate broaden the methylation support, but the formula is not specifically labeled with child-based intake directions.

84 Performance

Vitamin B12 5000 mcg

Global Healing

Vitamin B12 5000 mcg offers a more purposeful option because it combines adenosylcobalamin, hydroxocobalamin, and methylcobalamin in a liquid. The active B12 form is clearly disclosed and more focused, but the product is not a full B-complex or specifically child-dosed.

83 Performance

Double Strength Pantethine 600 mg

NOW

Double Strength Pantethine 600 mg offers a more purposeful option because it supplies 600 mg pantethine, an active vitamin B5-related form. Pantethine strengthens the B5 component, but it omits the original B12, riboflavin, and B6 and is not a complete replacement.

86 Budget

Vitamin B12 2000 mcg

Nutricost

Vitamin B12 2000 mcg costs less per serving, and it supplies 2,000 mcg methylcobalamin in a focused formula. The active B12 form is clearly disclosed and more focused, but the product is not a full B-complex or specifically child-dosed.

86 Budget

Quick Dissolve B-12 Methylcobalamin 2500 mcg

Nature's Bounty

Quick Dissolve B-12 Methylcobalamin 2500 mcg costs less per serving, and it supplies 2,500 mcg methylcobalamin in a quick-dissolve format. The active B12 form is clearly disclosed and more focused, but the product is not a full B-complex or specifically child-dosed.

83 Budget

Sublingual Methylcobalamin 1000 mcg

Solgar

Sublingual Methylcobalamin 1000 mcg costs less per serving, and it supplies 1,000 mcg methylcobalamin in a sublingual format. The active B12 form is clearly disclosed and more focused, but the product is not a full B-complex or specifically child-dosed.

87 Value

B12 Methylcobalamin 1000 mcg

Natural Factors

B12 Methylcobalamin 1000 mcg pairs useful ingredient quality with favorable serving value because it supplies 1,000 mcg methylcobalamin in a focused formula. The active B12 form is clearly disclosed and more focused, but the product is not a full B-complex or specifically child-dosed.

85 Value

B12 2500 mcg Red Cherry

EZ Melts

B12 2500 mcg Red Cherry pairs useful ingredient quality with favorable serving value because it supplies 2,500 mcg methylcobalamin in a fast-melting tablet. The active B12 form is clearly disclosed and more focused, but the product is not a full B-complex or specifically child-dosed.

79 Value

Methyl B12 3000 mcg Berry Flavor

Country Life

Methyl B12 3000 mcg Berry Flavor pairs useful ingredient quality with favorable serving value because it combines methylcobalamin with folate and vitamin C. The active B12 and added folate are focused and inexpensive, but the formula omits the original riboflavin, B6, and B5.

Report alternatives

Sources

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

  1. Physicochemical properties of and volatile compounds in riboflavin fortified cloudy apple juice; study of its effect on job fatigue among Egyptian construction workers.
    Fouad S; Ibrahim GE; Hussein AMS; Ibrahim FA; El Gendy A · Heliyon · 2021
    Non-randomized trialEnergy forRiboflavin
  2. Vitamin B status in patients with chronic fatigue syndrome.
    Heap LC; Peters TJ; Wessely S · Journal of the Royal Society of Medicine · 1999
    Case-control study30 participantsEnergy forRiboflavin
  3. B-vitamins, related vitamers, and metabolites in patients with quiescent inflammatory bowel disease and chronic fatigue treated with high dose oral thiamine.
    Bager P; Hvas CL; Hansen MM; Ueland P; Dahlerup JF · Molecular medicine (Cambridge, Mass.) · 2023
    Observational studyEnergy forRiboflavin
  4. Metabolic features of chronic fatigue syndrome.
    Naviaux RK; Naviaux JC; Li K; Bright AT; Alaynick WA; Wang L; Baxter A; Nathan N; Anderson W; Gordon E · Proceedings of the National Academy of Sciences of the United States of America · 2024
    Case-control study84 participantsEnergy forRiboflavin
  5. Effectiveness of Riboflavin in Inherited Metabolic Diseases: A Systematic Review
    Bregje Jaeger, Nina N Stolwijk, Femke Aaldering, Charlotte A Ruys, Marije Smits, Nicole I Wolf, Carla E M Hollak, Annet M Bosch · Journal of Inherited Metabolic Disease · 2026
    Systematic review381 studies pooledEnergy forRiboflavin
  6. 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 participantsEnergy forVitamin B12
  7. 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 pooledEnergy forVitamin B12
  8. Patients' experiences with methylcobalamin injections in amyotrophic lateral sclerosis.
    Zubair AS; Saab L; Scharer K; Khokhar B · Brain circulation · 2024
    Qualitative study5 participantsEnergy forVitamin B12
  9. 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 reviewEnergy forVitamin B12
  10. Vitamin B12 Deficiency: Common Questions and Answers.
    Patel H; McGuirk R · American family physician · 2025
    Narrative reviewEnergy forVitamin B12
  11. 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 participantsGeneral Health forVitamin B12
  12. 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 participantsGeneral Health forVitamin B12
  13. 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 participantsGeneral Health forVitamin B12
  14. 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 participantsGeneral Health forVitamin B12
  15. 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 participantsGeneral Health forVitamin B12
  16. 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 participantsHair Health forVitamin B12
  17. 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 participantsHair Health forVitamin B12
  18. Risk Factors for Pediatric Alopecia Areata: Clinical and Biochemical Findings from a Case - Control Study.
    İritaş SY · Dermatology practical & conceptual · 2026
    Case-control study600 participantsHair Health forVitamin B12
  19. 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 participantsHair Health forVitamin B12
  20. 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 participantsHair Health forVitamin B12
  21. 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 participantsProductivity Boost forVitamin B12
  22. 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-analysisProductivity Boost forVitamin B12
  23. 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 participantsProductivity Boost forVitamin B12
  24. 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 participantsProductivity Boost forVitamin B12
  25. 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 participantsProductivity Boost forVitamin B12
  26. 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 participantsProductivity Boost forVitamin B12
  27. 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 participantsProductivity Boost forVitamin B12
  28. 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 participantsProductivity Boost forVitamin B12
  29. 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 participantsProductivity Boost forVitamin B12
  30. Vitamin B6, B9, and B12 Intakes and Cognitive Performance in Elders: National Health and Nutrition Examination Survey, 2011-2014.
    Xu H; Wang S; Gao F; Li C · Neuropsychiatric disease and treatment · 2022
    Cross-sectional study2,421 participantsProductivity Boost forVitamin B6
  31. Effect of megavitamin treatment on mental performance and plasma vitamin B6 concentrations in mentally retarded young adults.
    Coburn SP; Schaltenbrand WE; Mahuren JD; Clausman RJ; Townsend D · The American journal of clinical nutrition · 1983
    Non-randomized trialProductivity Boost forVitamin B6
  32. Identifying Key Predictors of Cognitive Dysfunction in Older People Using Supervised Machine Learning Techniques: Observational Study.
    Rankin D; Black M; Flanagan B; Hughes CF; Moore A; Hoey L; Wallace J; Gill C; Carlin P; Molloy AM; Cunningham C; McNulty H · JMIR medical informatics · 2024
    Cohort studyProductivity Boost forVitamin B6
  33. Inappropriate nutrients intake is associated with lower functional status and inferior quality of life in older adults with depression.
    Guligowska A; Pigłowska M; Fife E; Kostka J; Sołtysik BK; Kroc Ł; Kostka T · Clinical interventions in aging · 2017
    Case-control study49 participantsProductivity Boost forVitamin B6
  34. A nutritional blend of taurine, vitamins B6, B9, and B12 improves motivated behaviors in healthy adults-a double-blinded randomized clinical trial.
    Anlacan VM; Jamora RDG; Krattinger LF; De Longis E; Hartweg M; Steinmann M; Trovò L · Frontiers in nutrition · 2026
    Randomized trial44 participantsProductivity Boost forVitamin B6