B-Complex 50

B-Complex 50

Solaray4.7 (9,044 ratings)
Format:Capsule Quantity: 100 VegCap(s) · 100 servings
Goals
$16.09 $0.16 per serving

Product analysis

70 out of 100

B-Complex 50 may help with tiredness linked to low B-vitamin intake and supports normal use of food for energy. Several ingredient forms are not disclosed, making the full mix harder to compare.

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

Nutrient Quality58

The mix includes some favorable forms and clearly identified B-vitamin sources. Other forms are omitted or less favorable, leaving quality uneven across the formula.

Ingredient Transparency86

All listed amounts and many forms are disclosed. Four form omissions leave part of the label less clear for comparison.

Value For Money56

Riboflavin and B6 offer good value, with more moderate value from niacin. Several other portions are less competitive, so value varies across the mix.

Customer Satisfaction90

Customer ratings are very positive across a large review base. The broad feedback reflects satisfaction without establishing extra energy from supplementation.

Product Focus69

The formula supports normal nutrient use and may help tiredness when intake is low. It does not establish extra energy or a faster metabolism when nutritional needs are already met.

Format
Capsule
Container
100 VegCap(s)
Per serving
$0.16
Customer rating
4.7 · 9,044 ratings
Report analysis

Goals

Everyday Health
Impact
Highest effect
A- Ingredient FitB+ PathwaysB+ EvidenceA+ Formulation Logic
Folate · 680 mcgVitamin B12 · 50 mcg

B vitamins supply nutrients involved in normal energy metabolism. Folate contribute to normal blood formation. The nutritional contributions can help when intake is low; added benefit above adequate intake is not established.

How this product is rated for Everyday Health

Ingredient fit86

Vitamin B9 (Folate) provide the supported focus, alongside other actives whose broad-health relevance is less established. The included amounts make a partial contribution to the saved comparison; smaller or unresolved quantities limit the overall contribution.
Goal fit
Vitamin B9 (Folate) provide the supported focus, alongside other actives whose broad-health relevance is less established.
Dose adequacy
The included amounts make a partial contribution to the saved comparison; smaller or unresolved quantities limit the overall contribution.

Pathways80

The strongest area is energy metabolism cofactors, with substantial coverage from the relevant ingredients.
Depth
The strongest area is energy metabolism cofactors, with substantial coverage from the relevant ingredients.
Breadth
The areas reaching the saved coverage threshold are energy metabolism cofactors, one-carbon metabolism and blood formation.

Evidence82

Vitamin B9 (Folate) contributes most strongly to the saved evidence finding; its role remains subject to the supplied nutritional or preparation-specific limitations.
Evidence strength
Vitamin B9 (Folate) contributes most strongly to the saved evidence finding; its role remains subject to the supplied nutritional or preparation-specific limitations.
Studied preparation
The eligible preparations match those accepted in the saved findings, without implying superior forms or broader clinical benefits.

Formulation logic100

None of the evaluated ingredient conflicts was triggered. The relevant ingredients can contribute independently or have their required partner present; no extra combined effect is established.
Partner coverage
The relevant ingredients can contribute independently or have their required partner present; no extra combined effect is established.
Conflicts
None of the evaluated ingredient conflicts was triggered.
Effective doses
All included ingredients meet the saved minimum amount comparison; this is not itself a clinically proven effectiveness threshold.
Study evidence
Folate Supportive 80 studies
Impact
High effect
B+ Ingredient FitF PathwaysB EvidenceA+ Formulation Logic
Vitamin B5 · 50 mgRiboflavin · 50 mgThiamin · 50 mgVitamin B12 · 50 mcg

B vitamins support normal energy metabolism, while folate, B6 and riboflavin can help address tiredness when intake is low. These nutritional roles do not establish an added energy boost when intake is adequate. B12 is present but its serving amount was below the saved comparison's inclusion threshold; that does not mean it has no nutritional value.

How this product is rated for Energy

Ingredient fit85

The relevant ingredients provide a mixed connection to energy. Their declared amounts largely meet the saved amount references.
Goal fit
The saved energy fit is diluted by broader product aims or ingredients outside the credited energy roles.
Dose adequacy
Declared amounts largely meet the comparison references; reaching them does not prove an additional energy benefit.

Pathways0

The supplied findings center on nutrient support; none of the five assessed alertness, exercise or fatigue pathways received coverage.
Depth
The supplied findings center on nutrient support; none of the five assessed alertness, exercise or fatigue pathways received coverage..
Breadth
None of the assessed pathways reaches the saved breadth threshold.

Evidence78

Vitamin B2 (Riboflavin) provides the leading evidence contribution in the saved findings. The included preparations met the saved preparation check, which does not establish unconditional fatigue relief.
Evidence strength
Vitamin B2 (Riboflavin) supplies the leading evidence contribution; its specific population and outcome limitations still apply.
Studied preparation
The included ingredients meet the saved preparation check; this does not prove finished-product efficacy.

Formulation logic100

The included ingredients have no missing required partners, and no configured conflict was matched. Each included amount clears the saved minimum comparison threshold.
Partner coverage
No required partner is missing from the included contributions.
Conflicts
No configured ingredient conflict was matched; this is not a comprehensive safety assessment.
Effective doses
All included ingredients clear the saved minimum amount threshold; this is a comparison cutoff, not proof of effective fatigue treatment.
Study evidence
Thiamin Disputed 12 studies
Impact
High effect
B Ingredient FitF PathwaysA+ EvidenceA+ Formulation Logic
Biotin · 50 mcgNiacin · 50 mgVitamin B12 · 50 mcgRiboflavin · 50 mgThiamin · 50 mgVitamin B5 · 50 mgVitamin B6 · 50 mg

B vitamins help the body use carbohydrate, fat and protein through their normal enzyme roles. Their presence and substantial amounts do not show that this formula raises resting energy expenditure when intake is already adequate. The supplied evidence supports normal nutrient-dependent metabolism, with no direct thermogenic effect established for this B-vitamin combination.

How this product is rated for Metabolism Support

Ingredient fit79

The formula centers on B vitamins, with additional ingredients outside this goal. The counted amounts have mixed matches to their saved references, rather than a uniform full match.
Goal fit
The formula centers on B vitamins, with additional ingredients outside this goal.
Dose adequacy
The counted amounts have mixed matches to their saved references, rather than a uniform full match.

Pathways0

No tracked thermogenic pathway received coverage. No tracked pathway reaches the saved breadth threshold.
Depth
No tracked thermogenic pathway received coverage.
Breadth
No tracked pathway reaches the saved breadth threshold.

Evidence100

Thiamin leads the saved evidence comparison; normal cofactor function does not establish increased energy expenditure.
Evidence strength
Thiamin leads the saved evidence comparison; normal cofactor function does not establish increased energy expenditure.
Studied preparation
The counted preparations are accepted in the saved comparison; this does not establish a metabolism-rate benefit for the whole formula.

Formulation logic100

The supplied findings require no missing partner and apply no ingredient conflict.
Partner coverage
The counted ingredients work without an additional required partner under the supplied findings.
Conflicts
No configured ingredient conflict was applied.
Effective doses
All counted ingredients meet the saved amount threshold; that threshold is not a proven minimum dose for thermogenesis.
Study evidence
Biotin Supportive 5 studies
Niacin Supportive 17 studies
Thiamin Supportive 11 studies
Vitamin B6 Supportive 16 studies

Ingredients

IngredientAmount per servingScore
Thiamine (Thiamine Mononitrate)
50 mg 76
Riboflavin
50 mg 72
Niacin (Niacinamide)
50 mg 73
Vitamin B6 (Pyridoxine Hydrochloride)
50 mg 75
Folic Acid
680 mcg 46
Vitamin B12 (Cyanocobalamin)
50 mcg
Biotin
50 mcg
Pantothenic Acid (Calcium D-Pantothenate)
50 mg 70
Choline (Choline Bitartrate)
20 mg 50
Para-Aminobenzoic Acid
50 mg 84
Inositol
50 mg
Adults 18–50
Report overview
A+ Ingredient Form & Label QualityF Dose, Safety & Label TransparencyA+ Value
One serving supplies 50 mg of vitamin B6, exceeding the European adult daily upper limit. B6 from food or other supplements would add to that amount.
How this ingredient is rated

Ingredient Form & Label Quality100

The B6 source is pyridoxine hydrochloride; none of the specified colors, titanium dioxide or talc were flagged.
Vitamin B6 Form Identification
Pyridoxine Hydrochloride is the identified B6 source; identifying the form does not establish superior absorption.
Clean Label and Excipient Purity
The evaluation flags none of its specified colors, titanium dioxide or talc; that does not establish an additive-free formula.

Dose, Safety & Label Transparency37

The 50 mg of B6 per serving exceeds the European adult daily upper limit; the source is identified.
Vitamin B6 Dose & Safety Policy
One serving contains 50 mg of vitamin B6, exceeding the European adult daily upper limit.
Label Transparency
The vitamin B6 source is identified as pyridoxine hydrochloride.

Value100

The whole-product price works out to about $0.0032 per mg of vitamin B6, a relatively low cost for the amount in this comparison.
Vitamin B6 Price Efficiency
The whole-product price works out to about $0.0032 per mg of vitamin B6, a relatively low cost for the amount in this comparison.
PABA · 50 mg OverallScore84
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB- Value
A serving lists 50 mg of PABA, with the amount stated individually. Scaled from the whole-product serving price, the cost is about $0.32 per 100 mg of PABA.
How this ingredient is rated

Active Ingredient Quality & Bioavailability80

The saved facts identify PABA but do not record a pharmaceutical-grade or purity claim.
PABA Source & Grade
PABA is named, while no specific grade or purity designation is recorded in the saved facts.

Dose, Safety & Label Transparency95

The serving lists 50 mg of PABA. None of the three assessed additive categories are recorded.
PABA Dosage Alignment
The recorded PABA amount is 50 mg per serving.
Label Disclosure Clarity
The PABA amount is individually recorded as 50 mg per serving.
Additive and Excipient Quality
The evaluated facts record no FD&C dyes, titanium dioxide or hydrogenated oils.

Value70

The serving price corresponds to about $0.32 per 100 mg of PABA when scaled from the whole-product price.
Price per 100mg PABA
Based on the whole-product serving price, the equivalent cost is about $0.32 per 100 mg of PABA.
A- Active Ingredient Quality & BioavailabilityC+ Dose, Safety & Label TransparencyC Value
A serving supplies 50 mg of niacin as niacinamide. Niacinamide is generally not associated with the flushing typical of nicotinic acid.
How this ingredient is rated

Active Ingredient Quality & Bioavailability86

Niacinamide is a standard form of vitamin B3.
Niacin Form & Goal Alignment
Niacinamide is the named form of vitamin B3.
Precursor Source Quality
Niacinamide is a standard form of vitamin B3.

Dose, Safety & Label Transparency67

The serving provides 50 mg of niacin as niacinamide, a form generally not associated with the flushing typical of nicotinic acid.
Clarity of Chemical Form
The label identifies niacinamide as the niacin form.
Form-Specific Dosage Efficacy
The serving provides 50 mg of niacin as niacinamide.
Flush Risk & Safety Labeling
Niacinamide is generally not associated with the flushing typical of nicotinic acid; no flush-free claim is recorded.

Value60

A whole-product serving costs about $0.16; that price covers all its ingredients.
Price Per Effective Serving
A whole-product serving costs about $0.16; that price covers all its ingredients.
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