B-Complex

B-Complex

Metabolic Maintenance4.8 (2,420 ratings)
Format:Capsule Quantity: 100 Capsule(s) · 100 servings
Goals
$43.00 $0.43 per serving

Product analysis

63 out of 100

B-Complex supplies B vitamins that help your body use energy from food and may help with tiredness linked to low intake. Several vitamin forms and the balance of its B6 blend are not fully explained, which makes comparison with simpler formulas harder.

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

Nutrient Quality56

The B2, B6 and B5 forms are favorable choices, while other ingredients are less fully described. Missing form details for folate and several other ingredients limit a close comparison of the whole blend.

Ingredient Transparency70

Ingredient amounts are clearly listed, so you can compare what a serving provides. Some vitamin forms and the proportions of the two B6 forms are missing.

Value For Money49

Value is uneven across the ingredients, with B6 and riboflavin offering the clearest advantages. B5 and choline are comparatively costly at the full serving price.

Customer Satisfaction87

Customer ratings indicate very high satisfaction. A large pool of customer ratings provides a broader picture of satisfaction.

Product Focus60

The formula mainly supports everyday nutritional needs linked to energy and normal brain function. Benefits are most relevant when intake is low, and the many suggested uses do not make it a targeted solution for each one.

Format
Capsule
Container
100 Capsule(s)
Per serving
$0.43
Customer rating
4.8 · 2,420 ratings
Report analysis

Goals

Impact
High effect
B+ Ingredient FitF PathwaysB+ EvidenceA+ Formulation Logic
Vitamin B5 · 150 mgRiboflavin · 25 mgThiamin · 25 mgVitamin B12 · 1000 mcg

Folate, Niacin, Vitamin B6, Vitamin B12, Vitamin B5 and Vitamin B2 (Riboflavin) can help reduce tiredness when inadequate intake causes deficiency-related fatigue. B12 and folate support normal red-blood-cell formation; deficiency-related anaemia can cause weakness. These functions do not establish an energy boost when intake is already adequate. Higher amounts or particular vitamin forms do not establish added fatigue benefit.

How this product is rated for Energy

Ingredient fit81

Vitamin B12 anchors the recognized ingredient fit, with declared amounts partly meeting the saved comparisons.
Goal fit
Recognized energy-related ingredients share the formula with ingredients serving other goals, reducing its focus.
Dose adequacy
The declared amounts partly meet the saved comparisons, limiting the size of the recognized contribution.

Pathways0

The saved result identifies no coverage of its specific energy pathways. Nutritional fatigue support remains distinct from alertness or exercise capacity.
Depth
No specific energy pathway receives coverage, even though the saved result recognizes nutritional contributions.
Breadth
No energy pathway reaches the saved breadth threshold.

Evidence81

Vitamin B12 leads the recognized evidence, but the supplied context limits how broadly its findings apply.
Evidence strength
Vitamin B12 supplies the strongest recognized evidence here, subject to the population and application limits described for it.
Studied preparation
The saved findings accept the qualifying preparations; this does not establish form superiority.

Formulation logic100

No required partner is missing, and no configured sedative conflict is present. The recognized amounts reach the saved minimum comparison.
Partner coverage
The recognized ingredients have no missing required partner for their assigned contributions.
Conflicts
No configured sedative conflict applies: valerian, kava, qualifying tryptophan and melatonin are absent.
Effective doses
All recognized ingredients reach the saved minimum amount comparison; that threshold is not proof of a clinical energy effect.
Study evidence
Thiamin Disputed 12 studies
Impact
Highest effect
A- Ingredient FitB+ PathwaysB+ EvidenceA+ Formulation Logic
Folate · 1333 mcg DFEVitamin B12 · 1000 mcgVitamin C · 15 mg

Several B vitamins contribute to normal energy metabolism when intake is low, while folate and vitamin B12 support normal blood formation and related metabolism. Their amounts reach the saved references, but high amounts do not establish greater benefit above adequate intake. The mixed or methylated forms do not establish superior effects. The small vitamin C amount adds little to the saved findings.

How this product is rated for Everyday Health

Ingredient fit85

The recognized ingredients reach the saved amount references; this does not imply additional benefit beyond adequate intake.
Goal fit
Relevant ingredients share the formula with additional actives whose general-health contributions are not established here.
Dose adequacy
The recognized ingredients reach the saved amount references; this does not imply additional benefit beyond adequate intake.

Pathways80

The strongest represented area is energy metabolism cofactors, reflecting the recognized ingredients and their amounts.
Depth
The strongest represented area is energy metabolism cofactors, reflecting the recognized ingredients and their amounts.
Breadth
The more substantially represented areas are energy metabolism cofactors, one-carbon metabolism and blood formation.

Evidence82

Vitamin B9 (Folate) provides the strongest recognized basis here; the supplied context still limits expectations for routine benefits in adequately nourished adults.
Evidence strength
Vitamin B9 (Folate) provides the strongest recognized basis here; the supplied context still limits expectations for routine benefits in adequately nourished adults.
Studied preparation
The recognized preparations meet the saved check; this does not establish superiority of the named forms or broad clinical benefits.

Formulation logic100

None of the defined ingredient-conflict conditions was triggered by the supplied facts.
Partner coverage
The recognized ingredients can contribute independently or have their required partners present; no added combined benefit is established.
Conflicts
None of the defined ingredient-conflict conditions was triggered by the supplied facts.
Effective doses
All recognized ingredients meet the saved minimum amount threshold; this is not a proven clinical treatment threshold.
Study evidence
Folate Supportive 80 studies
Vitamin C Supportive 56 studies
Impact
High effect
B Ingredient FitF PathwaysA+ EvidenceA+ Formulation Logic
Biotin · 400 mcgNiacin · 150 mg NEVitamin B12 · 1000 mcgRiboflavin · 25 mgThiamin · 25 mgVitamin B5 · 150 mgVitamin B6 · 55 mg

B vitamins help the body carry out normal energy metabolism. Taking extra amounts does not establish increased energy expenditure when nutrient intake is adequate.

How this product is rated for Metabolism Support

Ingredient fit76

The formula contributes nutrients involved in normal metabolism. Its mix and disclosed amounts determine the saved ingredient findings.
Goal fit
The formula has counted nutritional contributions alongside ingredients serving broader purposes.
Dose adequacy
The counted amounts partly meet the saved references; unknown amounts cannot establish a contribution comparable with studied exposures.

Pathways0

None of the evaluated pathways received a contribution; normal nutrient roles remain distinct from increased energy expenditure.
Depth
None of the evaluated pathways received a contribution; normal nutrient roles remain distinct from increased energy expenditure.
Breadth
No evaluated pathway reached the coverage criterion.

Evidence100

The saved evidence comparison accepts nutrient or cellular roles, while the supplied scientific context limits claims of increased energy expenditure.
Evidence strength
Vitamin B1 (Thiamin) leads the saved evidence comparison, but its physiological role or metabolic-marker findings do not establish a routine increase in energy expenditure.
Studied preparation
The counted preparations meet the saved preparation comparison; this does not prove a particular form raises metabolic rate more effectively.

Formulation logic100

There are no unmet partner requirements or configured conflicts. The amount findings describe the counted ingredients, without establishing combined metabolic benefits.
Partner coverage
No counted ingredient has an unmet partner requirement in the supplied findings.
Conflicts
No configured ingredient conflict was triggered.
Effective doses
All counted ingredients meet the saved minimum amount criterion, which is not proof of increased metabolic rate.
Study evidence
Biotin Supportive 5 studies
Niacin Supportive 17 studies
Thiamin Supportive 11 studies
Vitamin B6 Supportive 16 studies
Hair Health
Impact
Moderate effect
B- Ingredient FitF PathwaysB EvidenceA Formulation Logic
Biotin · 400 mcgVitamin C · 15 mg

Biotin may help with diffuse shedding if a shortage is the cause. The B vitamins also include B12, a cofactor commonly included in hair formulas, but that role doesn't show an independent hair-growth benefit. The folate amount remains unresolved in the product information, so its amount can't clarify expectations.

How this product is rated for Hair Health

Ingredient fit71

Biotin may help diffuse shedding caused by low biotin.
Goal fit
Biotin may help diffuse shedding caused by low biotin.
Dose adequacy
Vitamin B12 1000 mcg and Vitamin B3 (Niacin) 150 mg per serving; these declared amounts do not by themselves establish a hair-growth benefit.

Pathways0

The listed nutrients do not identify a direct effect on androgen signalling, hair-fibre construction, follicle antioxidant protection or stress hormones.
Depth
The listed nutrients do not identify a direct effect on androgen signalling, hair-fibre construction, follicle antioxidant protection or stress hormones.
Breadth
The listed nutrients do not identify a direct effect on androgen signalling, hair-fibre construction, follicle antioxidant protection or stress hormones.

Evidence78

Biotin may help diffuse shedding caused by low biotin. The ingredient forms do not remove the limits on routine hair-regrowth benefits.
Evidence strength
Biotin may help diffuse shedding caused by low biotin.
Studied preparation
The ingredient forms do not remove the limits on routine hair-regrowth benefits.

Formulation logic92

No particular ingredient conflict or missing required partner is identified. Declared amounts still need to be distinguished from demonstrated hair benefits.
Partner coverage
No missing required partner is identified for the relevant ingredients.
Conflicts
No particular ingredient conflict is identified.
Effective doses
Folate has no resolved amount; the serving declares B12 1000 mcg and niacin 150 mg.
Study evidence
Biotin Supportive 4 studies
Folate Mixed 15 studies
Niacin Disputed 2 studies

Ingredients

IngredientAmount per servingScore
Vitamin C (Ascorbyl Palmitate)
15 mg
Thiamine (Thiamine Mononitrate)
25 mg 65
Riboflavin (Riboflavin 5-Phosphate)
25 mg 91
Niacin (Niacinamide)
150 mg NE
Vitamin B-6 (Pyridoxal 5-Phosphate, Pyridoxine Hydrochloride)
55 mg 74
Folate
1333 mcg DFE
Vitamin B12 (Methylcobalamin)
1000 mcg 90
Biotin
400 mcg 59
Pantothenic Acid (Calcium D-Pantothenate)
150 mg 70
Choline (Choline Bitartrate)
50 mg 58
Inositol
50 mg
PABA
50 mg 78
Gluten Free Adults 18–50 Dairy Free
Report overview
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD+ Value
Each serving provides 1000 mcg of B12, with a moderate cost for the amount of B12. Methylcobalamin is a bioactive form.
How this ingredient is rated

Active Ingredient Quality & Bioavailability100

The B12 is methylcobalamin.
Bioactive B12 Form Selection
Methylcobalamin is the listed B12 form.

Dose, Safety & Label Transparency100

The label states 1000 mcg of B12 per serving and names methylcobalamin.
Therapeutic Dosage Level
Each serving supplies 1000 mcg of B12.
Label and Form Transparency
The label states the amount and names methylcobalamin.

Value50

The cost is moderate for the amount of B12 provided.
Price per 1,000 mcg B12
The cost is moderate for the amount of B12 provided.
A+ Ingredient Form & Label QualityF Dose, Safety & Label TransparencyA+ Value
Each serving supplies 55 mg of vitamin B6. The cost per amount of B6 is low; the price covers the full serving. The amount per serving exceeds the European adult daily upper limit of 12 mg; total intake also includes food and other supplements. The B6 comes from pyridoxal 5-phosphate and pyridoxine hydrochloride. The proportions aren't stated.
How this ingredient is rated

Ingredient Form & Label Quality100

The B6 comes from pyridoxal 5-phosphate and pyridoxine hydrochloride. The proportions aren't stated. No configured artificial colors, titanium dioxide or talc are flagged.
Vitamin B6 Form Identification
The B6 comes from pyridoxal 5-phosphate and pyridoxine hydrochloride. The proportions aren't stated.
Clean Label and Excipient Purity
No configured artificial colors, titanium dioxide or talc are flagged.

Dose, Safety & Label Transparency36

Each serving supplies 55 mg of vitamin B6. The amount per serving exceeds the European adult daily upper limit of 12 mg; total intake also includes food and other supplements. The B6 source is named. The amounts of each form are not stated.
Vitamin B6 Dose & Safety Policy
Each serving supplies 55 mg of vitamin B6. The amount per serving exceeds the European adult daily upper limit of 12 mg; total intake also includes food and other supplements.
Label Transparency
The B6 source is named. The amounts of each form are not stated.

Value95

The cost per amount of B6 is low; the price covers the full serving.
Vitamin B6 Price Efficiency
The cost per amount of B6 is low; the price covers the full serving.
PABA · 50 mg OverallScore78
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD- Value
A serving lists 50 mg of PABA. At the whole-product serving price, the cost works out to about $0.86 per 100 mg of PABA.
How this ingredient is rated

Active Ingredient Quality & Bioavailability80

PABA is named in the available facts; no grade or purity designation is recorded.
PABA Source & Grade
PABA is named in the available facts; no grade or purity designation is recorded.

Dose, Safety & Label Transparency95

The PABA amount is listed per serving. The saved other-ingredients information identifies no artificial dyes, titanium dioxide or hydrogenated oils.
PABA Dosage Alignment
The listed serving contains 50 mg of PABA.
Label Disclosure Clarity
The PABA amount is listed as 50 mg per serving.
Additive and Excipient Quality
The saved other-ingredients information identifies no artificial dyes, titanium dioxide or hydrogenated oils.

Value40

At the whole-product serving price, the cost works out to about $0.86 per 100 mg of PABA.
Price per 100mg PABA
At the whole-product serving price, the cost works out to about $0.86 per 100 mg of PABA.
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 Metabolism Support forRiboflavin
  6. Influence of thiamin supplementation on the health and general well-being of an elderly Irish population with marginal thiamin deficiency.
    Smidt LJ; Cremin FM; Grivetti LE; Clifford AJ · Journal of gerontology · 1991
    Randomized trial80 participantsEnergy forThiamin
  7. Randomised clinical trial: high-dose oral thiamine versus placebo for chronic fatigue in patients with quiescent inflammatory bowel disease.
    Bager P; Hvas CL; Rud CL; Dahlerup JF · Alimentary pharmacology & therapeutics · 2021
    Randomized trial40 participantsEnergy forThiamin
  8. Dietary reference values for thiamin.
    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA); Turck D; Bresson JL; Burlingame B; Dean T; Fairweather-Tait S; Heinonen M; Hirsch-Ernst KI; Mangelsdorf I; McArdle HJ; Naska A; Nowicka G; Pentieva K; Sanz Y; Siani A; Sjödin A; Stern M; Tomé D; Van Loveren H; Vinceti M; Willatts P; Lamberg-Allardt C; Przyrembel H; Tetens I; Gudelj Rakic J; Ioannidou S; de Sesmaisons-Lecarré A; Forss AC; Neuhäuser-Berthold M · EFSA journal. European Food Safety Authority · 2026
    Guideline / consensusEnergy forThiamin
  9. Effects of thiamine supplementation on exercise-induced fatigue.
    Suzuki M; Itokawa Y · Metabolic brain disease · 1996
    Randomized trial16 participantsEnergy forThiamin
  10. Long-term maintenance treatment with 300 mg thiamine for fatigue in patients with inflammatory bowel disease: results from an open-label extension of the TARIF study.
    Bager P; Hvas CL; Rud CL; Dahlerup JF · Scandinavian journal of gastroenterology · 2022
    Randomized trialEnergy forThiamin
  11. 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
  12. 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
  13. 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
  14. 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
  15. Vitamin B12 Deficiency: Common Questions and Answers.
    Patel H; McGuirk R · American family physician · 2025
    Narrative reviewEnergy forVitamin B12
  16. 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 participantsEveryday Health forFolate
  17. 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 participantsEveryday Health forFolate
  18. 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 participantsEveryday Health forFolate
  19. 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 reviewEveryday Health forFolate
  20. 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 pooledEveryday Health forFolate