$11.02 $0.22 per serving
Product analysis
B-Complex '100' supplies B vitamins that support normal nutrient metabolism and blood formation when your diet falls short. Its clearest role is nutritional support rather than an extra energy boost.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality61
Several B vitamins have clearly identified forms, while folate and inositol are less well specified. Quality also remains uncertain for some identified nutrients, so the forms do not establish a uniform advantage.
Ingredient Transparency74
Ingredient amounts and most forms are stated, making basic serving comparisons straightforward. Folate, inositol and the balance of B5 sources are less clear.
Value For Money55
B6 and riboflavin offer favorable value, while B5 and choline look costly for their contributions. Other ingredients give mixed or uncertain comparisons, so value varies across the blend.
Customer Satisfaction93
Customer ratings are very positive across a large number of reviews. The broad feedback supports a favorable picture of satisfaction without confirming health benefits.
Product Focus70
The clearest role is supplying B vitamins for normal metabolism and blood formation when intake is low. B6 reaches 100 mg per serving, a high amount that raises a suitability concern without establishing added benefit.
- Format
Capsule - Container
- 50 Capsule(s)
- Per serving
- $0.22
- Also available
B-Complex '50'$25.87- Customer rating
- 4.8 · 12,766 ratings
Goals
Impact
High effect
Vitamin B5 · 100 mgRiboflavin · 100 mgThiamin · 100 mgVitamin B12 · 100 mcg
Riboflavin, niacin, vitamin B5, vitamin B6 and folate can help when low intake or deficiency contributes to tiredness. Their normal metabolic functions do not establish extra energy once nutritional needs are met. The large selected serving amounts reach the saved references without proving greater fatigue relief. B12 is present but falls below the saved contribution threshold, and no energy-pathway coverage is assigned.
How this product is rated for Energy
Ingredient fit87
Relevant ingredients contribute to the evaluated role, while additional actives and links to other goals broaden the formula's focus.
Goal fit
Relevant ingredients contribute to the evaluated role, while additional actives and links to other goals broaden the formula's focus.
Dose adequacy
The recognized amount reaches the saved reference; this does not establish an optimal dose, greater benefit or safety at higher exposure.
Pathways0
None of the evaluated energy pathways reaches the saved coverage threshold.
Depth
No evaluated energy pathway receives a contribution, despite the separate ingredient finding; this is not proof of universal ineffectiveness.
Breadth
None of the evaluated energy pathways reaches the saved coverage threshold.
Evidence78
Riboflavin drives the strongest saved evidence finding; its fatigue-related role is conditional on low intake or deficiency.
Evidence strength
Riboflavin drives the strongest saved evidence finding; its fatigue-related role is conditional on low intake or deficiency.
Studied preparation
The saved result recognizes the preparations meeting its amount threshold; this does not establish superiority or remove population and regimen limitations.
Formulation logic100
Recognized ingredients have no missing required partners, and no evaluated conflict was triggered. All meet the saved minimum amount threshold.
Partner coverage
Recognized ingredients work independently or have their required partners; no added combination benefit is established.
Conflicts
No configured ingredient conflict was triggered; this covers only the combinations evaluated.
Effective doses
All recognized ingredients meet the saved minimum amount threshold; this is not proof of a clinical energy response.
Vitamin B5 Not classified
No linked studies yet.
Impact
Highest effect
Folate · 666 mcg DFEVitamin B12 · 100 mcg
B vitamins contribute to normal energy metabolism, while folate and B12 contribute to blood formation. These nutrients can help fill dietary gaps; amounts above nutritional adequacy do not establish additional general-health benefits. Vitamin B6 reaches 100 mg per serving, triggering the configured high-amount concern.
How this product is rated for Everyday Health
Ingredient fit88
The retained nutrients provide nutritional contributions, with the serving amounts determining how fully the saved references are covered.
Goal fit
The formula includes relevant nutrients alongside other active ingredients, making its focus less specific.
Dose adequacy
Serving amounts provide uneven coverage of the saved references, with unresolved quantities contributing no amount coverage.
Pathways80
The strongest saved area is energy metabolism cofactors; breadth depends on the other retained nutrient contributions.
Depth
The saved findings are strongest for energy metabolism cofactors, reflecting the retained nutrients’ nutritional roles.
Breadth
The saved findings cover energy metabolism cofactors, one-carbon metabolism and blood formation.
Evidence82
Vitamin B9 (Folate) provides the strongest saved evidence connection, limited here to conditional nutritional usefulness.
Evidence strength
Vitamin B9 (Folate) leads the saved evidence finding; its practical general-health role is filling a dietary gap rather than guaranteeing disease prevention.
Studied preparation
The retained ingredients meeting the amount threshold match recognized preparation categories; no superior form or delivery benefit is established.
Formulation logic93
Vitamin B6 reaches 100 mg per serving, triggering the configured high-amount concern.
Partner coverage
The saved findings identify no missing required ingredient partner.
Conflicts
Vitamin B6 reaches 100 mg per serving, triggering the configured high-amount concern.
Effective doses
All retained nutrients meet the saved amount threshold, which is a comparison reference rather than proof of added health benefits.
Impact
High effect
Biotin · 100 mcgNiacin · 100 mgVitamin B12 · 100 mcgRiboflavin · 100 mgThiamin · 100 mgVitamin B5 · 100 mgVitamin B6 · 100 mg
B vitamins help the body use carbohydrates, fats and protein through their coenzyme roles. Supplying more than adequate intake does not establish a rise in resting or daily energy expenditure. The formula's recognized amounts reflect a comparison framework rather than proof that high B-vitamin amounts accelerate metabolism. The cyanocobalamin form does not establish a different metabolism-boost effect.
How this product is rated for Metabolism Support
Ingredient fit81
B vitamins supply the credited contributions, though linked to several goals.
Goal fit
B vitamins supply the credited contributions, though linked to several goals.
Dose adequacy
Most amounts reach their saved benchmarks; B12 and biotin receive partial amount recognition.
Pathways0
The saved findings show no coverage of the configured metabolic-rate pathways, despite recognizing the nutrients' amounts.
Depth
None of the configured metabolic-rate pathways receives coverage from the credited nutrients.
Breadth
No area reaches the saved threshold for substantial coverage.
Evidence100
Thiamin leads the saved evidence finding, and the credited preparations are recognized. Normal nutrient or cellular roles still differ from measured whole-body energy expenditure.
Evidence strength
Thiamin leads the saved evidence finding; the clinical scope and outcome limitations described above still apply.
Studied preparation
The saved findings recognize the credited preparations; this does not establish a sustained metabolism or fat-loss effect.
Formulation logic100
No unmet partner requirement or configured conflict was found. All credited ingredients clear the amount threshold used for inclusion.
Partner coverage
Each credited ingredient works independently or has its required partner.
Conflicts
No configured conflict was matched among the evaluated combinations.
Effective doses
All credited ingredients clear the inclusion threshold; this is not proof of an effective energy-expenditure dose.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Thiamine (Thiamine Mononitrate) | 100 mg | |
Riboflavin | 100 mg | |
Niacin (Niacinamide) | 100 mg | |
Vitamin B6 (Pyridoxide HCl) | 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, a standard water-soluble form. The whole-product price is about $0.22 per 100 mg of thiamin.
How this ingredient is rated
Active Ingredient Quality & Bioavailability70
Thiamine Mononitrate is a standard water-soluble thiamin form.
Thiamin Chemical Form
Thiamine Mononitrate is a standard water-soluble form of thiamin.
Excipient Purity
No configured artificial colors or sweeteners were flagged in the evaluation.
Dose, Safety & Label Transparency100
The amount is clearly stated at 100 mg of thiamin per serving.
Thiamin Dosage Potency
The stated 100 mg of thiamin per serving is a substantial amount in the evaluation.
Label Transparency & Proprietary Blends
The thiamin amount is clearly stated as 100 mg per serving.
Value40
The whole-product price works out to about $0.22 per 100 mg of thiamin.
Price per Declared Dose
The whole-product price works out to about $0.22 per 100 mg of thiamin.
Niacin (Niacinamide) · 100 mg OverallScore72
The serving provides 100 mg of niacin as niacinamide, but that form is a weaker fit for the stated heart-health goal. Niacinamide does not share nicotinic acid’s specific lipid-related effects.
How this ingredient is rated
Active Ingredient Quality & Bioavailability57
Niacinamide is a standard form, but it is less aligned with the stated heart-health goal than nicotinic acid.
Niacin Form & Goal Alignment
Niacinamide lacks nicotinic acid’s specific lipid-related effects, making it a weaker match for the stated heart-health goal.
Precursor Source Quality
Niacinamide is a standard form, and no advanced NAD+ claim is recorded in the saved facts.
Dose, Safety & Label Transparency92
The 100 mg amount and form are identified; no no-flush claim is recorded.
Clarity of Chemical Form
The saved facts identify the form as niacinamide.
Form-Specific Dosage Efficacy
The 100 mg amount meets the evaluation’s criteria for this form.
Flush Risk & Safety Labeling
The saved facts record no no-flush claim or flush warning for this form.
Value60
A whole-product serving costs about $0.22, a moderate price for this niacin form in the evaluation.
Price Per Effective Serving
A whole-product serving costs about $0.22, a moderate price for this niacin form in the evaluation.
Riboflavin · 100 mg OverallScore72
Each serving provides 100 mg of riboflavin; it is standard riboflavin. The whole-product serving costs about $0.22.
How this ingredient is rated
Active Ingredient Quality & Bioavailability30
The source is standard riboflavin, which the body converts to active coenzyme forms.
Riboflavin Form Quality
Standard riboflavin requires conversion to a coenzyme form.
Dose, Safety & Label Transparency100
The stated riboflavin amount is 100 mg per serving, a larger amount under the evaluation.
Dosage for Energy & Metabolism
A serving provides 100 mg of riboflavin, which the evaluation treats as a larger amount.
R5P Elemental Yield Transparency
The phosphate yield question does not apply to the riboflavin form used in the evaluation.
Additive Purity
No artificial additives were flagged in the available ingredient information.
Value100
A whole-product serving costs about $0.22.
Price per Serving Value
The price is about $0.22 per whole-product serving.
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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.