$41.94 $0.16 per serving
Product analysis
B-Complex '100' supplies B vitamins that support normal nutrient use and can help fill dietary gaps. Extra energy is less likely when vitamin intake is already adequate.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality61
Several B vitamins have clearly identified forms, making parts of the formula easier to compare. Folate and inositol lack form details, while a quality advantage for some other ingredients remains uncertain.
Ingredient Transparency74
Amounts are listed for all declared ingredients, and most forms are named. Folate, inositol and the full vitamin B5 breakdown need clearer detail for a complete comparison.
Value For Money55
Value varies across the formula, with riboflavin and B6 comparing favorably on cost. Vitamin B5 and choline look less economical for their declared amounts.
Customer Satisfaction93
Customers report high satisfaction across tens of thousands of ratings. The broad review base supports confidence in buyer approval, without establishing effectiveness or safety.
Product Focus70
The B vitamins suit normal nutrient metabolism and filling dietary gaps. The 100 mg B6 serving raises concern about sensory nerve damage with long-term use.
- Format
Capsule - Container
- 250 Capsule(s)
- Per serving
- $0.16
- Also available
B-Complex '50'$25.87- Customer rating
- 4.7 · 30,198 ratings
Goals
Impact
High effect
Vitamin B5 · 100 mgRiboflavin · 100 mgThiamin · 100 mgVitamin B12 · 100 mcg
The B vitamins support normal nutrient metabolism, and several can help address fatigue when intake is inadequate or deficiency is present. Folate and B6 contribute to blood-cell functions, while niacin, thiamin, riboflavin and B5 support nutritional adequacy. These roles do not establish extra energy from high amounts when intake is adequate. B12 is present but receives no contribution at its declared amount in the saved findings.
How this product is rated for Energy
Ingredient fit87
Several B vitamins provide relevant nutritional contributions within this broader B-complex formula.
Goal fit
Several B vitamins provide relevant nutritional contributions within this broader B-complex formula..
Dose adequacy
The six credited nutrients receive full amount credit; B12 at 100 mcg per serving is below the saved counting threshold.
Pathways0
No specific energy pathway receives coverage in the saved findings.
Depth
No specific energy pathway receives coverage in the saved findings.
Breadth
The nutritional contributions do not provide coverage across the assessed energy pathways.
Evidence78
Riboflavin supplies the strongest saved evidence contribution; the relevant nutritional benefits depend on inadequate intake or deficiency.
Evidence strength
Riboflavin supplies the strongest saved evidence contribution; the relevant nutritional benefits depend on inadequate intake or deficiency.
Studied preparation
The six credited nutrients meet the saved preparation check.
Formulation logic100
The credited ingredients do not require an additional partner, and no configured conflicts were found. Their amounts meet the saved minimum for a contribution.
Partner coverage
The credited ingredients work independently without a missing required partner.
Conflicts
No configured ingredient conflicts were found in the supplied facts.
Effective doses
All credited ingredients meet the saved minimum amount threshold; this does not establish a proven fatigue-treatment dose.
Vitamin B5 Not classified
No linked studies yet.
Impact
Highest effect
Folate · 666 mcg DFEVitamin B12 · 100 mcg
Folate and the accompanying B vitamins contribute nutrients involved in normal metabolism and blood formation. These nutritional roles do not establish improved health outcomes when intake is already adequate. The 100 mg vitamin B6 serving raises a concern about sensory nerve damage with long-term intake.
How this product is rated for Everyday Health
Ingredient fit88
Vitamin B9 (Folate) provides a meaningful nutritional connection, with amounts interpreted against the supplied intake comparisons.
Goal fit
Relevant nutrients dominate the formula, although the product also relates to other goals.
Dose adequacy
The counted amounts provide partial coverage of the saved reference ranges; these are nutritional comparisons, not proven clinical response thresholds.
Pathways80
The main recorded connection is energy metabolism cofactors. Nutrient coverage does not establish extra benefit in adequately nourished adults.
Depth
The strongest recorded coverage concerns energy metabolism cofactors, reflecting nutrient availability rather than a proven improvement in symptoms.
Breadth
Coverage extends to energy metabolism cofactors, one-carbon metabolism and blood formation.
Evidence82
Vitamin B9 (Folate) anchors the saved finding. Its nutritional role is more established than a broad improvement in health outcomes.
Evidence strength
Vitamin B9 (Folate) leads this finding; its support concerns nutritional availability rather than assured benefit above adequate intake.
Studied preparation
The counted preparations meet the saved comparison criteria, without an established benefit from a particular nutrient form or delivery method.
Formulation logic93
The B vitamins meet the saved amount conditions, but the vitamin B6 serving triggers a long-term nerve-risk concern.
Partner coverage
The counted nutrients work independently or meet the saved partner conditions; extra combination benefit is not established.
Conflicts
Vitamin B6 at 100 mg per serving raises the supplied concern about sensory nerve damage with long-term intake.
Effective doses
All counted ingredients meet the saved minimum amount criterion, which is distinct from a proven health-outcome dose.
Impact
High effect
Biotin · 100 mcgNiacin · 100 mgVitamin B12 · 100 mcgRiboflavin · 100 mgThiamin · 100 mgVitamin B5 · 100 mgVitamin B6 · 100 mg
The B vitamins support normal energy metabolism, without evidence that extra amounts raise calorie expenditure when intake is adequate.
How this product is rated for Metabolism Support
Ingredient fit81
Vitamin B1 (Thiamin) leads the relevant ingredient finding. The saved amount comparison remains distinct from proof of a metabolism boost.
Goal fit
Vitamin B1 (Thiamin) provides a relevant connection within a broader formula, reducing its focus on this goal.
Dose adequacy
The relevant amounts partly match the saved comparison exposures; this limits the amount finding without quantifying a change in calorie expenditure.
Pathways0
Normal metabolic roles do not translate into meaningful coverage of the reviewed energy-expenditure mechanisms.
Depth
No reviewed energy-expenditure mechanism received a meaningful contribution, despite the ingredients’ normal metabolic roles.
Breadth
No reviewed mechanism reaches the saved coverage threshold, so broad energy-expenditure support is not established.
Evidence100
Vitamin B1 (Thiamin) leads the saved evidence comparison. Clinical context limits any claim that these ingredients increase whole-body energy expenditure.
Evidence strength
Vitamin B1 (Thiamin) anchors the saved evidence finding, while the supplied human evidence does not establish a routine metabolism boost in adequately nourished adults.
Studied preparation
The included ingredients match preparations recognized in the saved comparison. Matching a preparation does not establish that it increases calorie expenditure.
Formulation logic100
No missing required partner or matched conflict was identified. The included ingredients meet the saved amount threshold.
Partner coverage
The relevant ingredients act independently or have their required partner; this does not establish an added benefit from their combination.
Conflicts
No conflict was identified in the supplied checks; this is a limited formulation finding rather than a general safety conclusion.
Effective doses
The included ingredients meet the saved amount threshold; this threshold is not a proven minimum dose for increasing metabolism.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Thiamine (Thiamine Mononitrate) | 100 mg | |
Riboflavin | 100 mg | |
Niacin (Niacinamide) | 100 mg | |
Vitamin B6 (Pyridoxine Hydrochloride) | 100 mg | |
Folate | 666 mcg DFE | |
Vitamin B12 (Cyanocobalamin) | 100 mcg | |
Biotin (D-Biotin) | 100 mcg | |
Pantothenic Acid (D-Calcium Pantothenate, Vitamin B5) | 100 mg | |
Choline (Choline Bitartrate) | 20 mg | |
Inositol | 100 mg |
Thiamin (Thiamine Mononitrate) · 100 mg OverallScore76
The serving provides 100 mg of thiamin from thiamine mononitrate. The evaluation regards that as a high-potency amount for a serving.
How this ingredient is rated
Active Ingredient Quality & Bioavailability70
Thiamine Mononitrate is a standard, water-soluble thiamin form. None of the additives checked by this rule are flagged in the saved facts.
Thiamin Chemical Form
Thiamine Mononitrate is a standard, water-soluble thiamin form.
Excipient Purity
None of the additives checked by this rule are flagged in the saved facts.
Dose, Safety & Label Transparency100
The amount is disclosed as 100 mg of thiamin per serving. The evaluation regards that as a high-potency amount.
Thiamin Dosage Potency
The serving contains 100 mg of thiamin, which the evaluation regards as a high-potency amount.
Label Transparency & Proprietary Blends
The amount and source are identified: 100 mg of thiamin per serving.
Value40
Based on whole-product serving prices, the cost works out to about $0.17 per 100 mg of thiamin.
Price per Declared Dose
Based on whole-product serving prices, the cost works out to about $0.17 per 100 mg of thiamin.
Niacin (Niacinamide) · 100 mg OverallScore72
Each serving supplies 100 mg of niacin as niacinamide, which lacks the lipid effects of nicotinic acid. That makes the form a less direct fit for the stated heart-health goal, even though the amount aligns with the form-specific assessment.
How this ingredient is rated
Active Ingredient Quality & Bioavailability57
Niacinamide is a standard form, but it lacks the lipid-modulating effects of nicotinic acid and is less directly aligned with the heart-health goal.
Niacin Form & Goal Alignment
Niacinamide lacks the lipid-modulating effects of nicotinic acid, making it a less direct match for the stated heart-health goal.
Precursor Source Quality
Niacinamide is a standard form, and no advanced NAD+ claim is recorded.
Dose, Safety & Label Transparency92
The serving provides 100 mg of niacin as niacinamide, an amount that aligns with the form-specific assessment. Niacinamide is a non-flushing form; a no-flush claim is not recorded.
Clarity of Chemical Form
The niacin form is identified as niacinamide.
Form-Specific Dosage Efficacy
The 100 mg serving matches the form-specific amount assessed favorably for niacinamide.
Flush Risk & Safety Labeling
Niacinamide is a non-flushing form; a no-flush claim is not recorded in the saved facts.
Value60
A whole-product serving costs about $0.17; that price does not isolate the cost of niacin.
Price Per Effective Serving
A whole-product serving costs about $0.17; that price does not isolate the cost of niacin.
Riboflavin · 100 mg OverallScore72
A serving supplies 100 mg of standard riboflavin, a high amount in the evaluation. The whole-product serving costs about $0.17.
How this ingredient is rated
Active Ingredient Quality & Bioavailability30
Standard riboflavin is converted by the body into active forms.
Riboflavin Form Quality
The source is standard riboflavin, which the body converts to active forms.
Dose, Safety & Label Transparency100
The serving provides 100 mg of riboflavin, a high amount in the evaluation. No artificial colors or synthetic sweeteners are flagged in the available ingredient information.
Dosage for Energy & Metabolism
The serving provides 100 mg of riboflavin, a high amount in the evaluation.
R5P Elemental Yield Transparency
Phosphate yield ambiguity does not apply to standard riboflavin.
Additive Purity
No artificial colors or synthetic sweeteners are flagged in the available ingredient information.
Value100
A whole-product serving costs about $0.17.
Price per Serving Value
A whole-product serving costs about $0.17.
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Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Physicochemical properties of and volatile compounds in riboflavin fortified cloudy apple juice; study of its effect on job fatigue among Egyptian construction workers.
- Vitamin B status in patients with chronic fatigue syndrome.
- B-vitamins, related vitamers, and metabolites in patients with quiescent inflammatory bowel disease and chronic fatigue treated with high dose oral thiamine.
- Metabolic features of chronic fatigue syndrome.
- Effectiveness of Riboflavin in Inherited Metabolic Diseases: A Systematic Review
- Influence of thiamin supplementation on the health and general well-being of an elderly Irish population with marginal thiamin deficiency.
- Randomised clinical trial: high-dose oral thiamine versus placebo for chronic fatigue in patients with quiescent inflammatory bowel disease.
- Dietary reference values for thiamin.
- Effects of thiamine supplementation on exercise-induced fatigue.
- 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.
- A new perspective on vitamin B12 deficiency in rheumatology: a case-based review.
- Effects of Vitamin B12 Supplementation on Cognitive Function, Depressive Symptoms, and Fatigue: A Systematic Review, Meta-Analysis, and Meta-Regression.
- Patients' experiences with methylcobalamin injections in amyotrophic lateral sclerosis.
- Cobalamin deficiency: clinical picture and radiological findings.
- Vitamin B12 Deficiency: Common Questions and Answers.
- Intakes of Folate, Vitamin B6, and Vitamin B12 in Relation to All-Cause and Cause-Specific Mortality: A National Population-Based Cohort.
- The responsiveness of plasma homocysteine to small increases in dietary folic acid: a primary care study.
- 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.
- The concept of folic acid supplementation and its role in prevention of neural tube defect among pregnant women: PRISMA.
- Systematic review of adverse health outcomes associated with high serum or red blood cell folate concentrations.