B-Complex plus Vitamin C

B-Complex plus Vitamin C

21st Century4.8 (28,678 ratings)
Format:Tablet Quantity: 100 Tablet(s) · 100 servings
Goals
$7.49 $0.07 per serving

Product analysis

68 out of 100

B-Complex plus Vitamin C offers inexpensive nutrient support for tiredness caused by low intake of the included vitamins.

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

Nutrient Quality52

Niacinamide is clearly identified, and the thiamin form is reasonably favorable. Ordinary riboflavin has no special form advantage, while several other comparisons remain uncertain.

Ingredient Transparency80

Amounts and forms are stated for all listed components. The split between the two calcium forms is missing, limiting precise comparison of that mixture.

Value For Money61

The serving is inexpensive, with favorable value for riboflavin and niacin. Thiamin is less compelling on cost, while value for other ingredients remains uncertain.

Customer Satisfaction94

Customer feedback is very positive across tens of thousands of ratings. That gives a broad picture of satisfaction without proving an extra energy boost.

Product Focus69

The vitamins share a clear connection to normal energy use and tiredness related to low intake. Larger amounts do not establish greater energy once nutritional needs are met.

Format
Tablet
Container
100 Tablet(s)
Per serving
$0.07
Customer rating
4.8 · 28,678 ratings
Report analysis

Goals

Impact
High effect
A- Ingredient FitF PathwaysB EvidenceA+ Formulation Logic
Vitamin B5 · 10 mgRiboflavin · 14.3 mgThiamin · 15 mg

Riboflavin, niacin, vitamin B6, pantothenic acid and vitamin C can help address tiredness caused by low intake or deficiency. These normal nutrient roles do not establish extra energy when intake is adequate. The larger nutrient amounts do not establish greater fatigue relief.

How this product is rated for Energy

Ingredient fit87

Riboflavin is the leading retained contributor within the formula's nutritional roles. Amounts contribute at differing levels.
Goal fit
Riboflavin is the leading retained contributor within the formula's nutritional roles.
Dose adequacy
The retained amounts meet the saved comparison requirements, without establishing added benefit from higher amounts.

Pathways0

No configured energy area receives a direct contribution; correction of nutrient-deficiency tiredness remains a separate role.
Depth
No configured energy area receives a direct contribution; nutrient-deficiency correction remains distinct.
Breadth
No area reaches the saved coverage requirement.

Evidence78

Riboflavin supplies the leading saved evidence contribution. Its specific nutritional, population or preparation limitations constrain expected benefit.
Evidence strength
Riboflavin supplies the leading saved evidence contribution, without establishing unconditional improvement in everyday energy.
Studied preparation
The retained contributors meet the preparation check; no superior fatigue benefit is established for the declared forms.

Formulation logic100

The retained contributors need no missing partner under the supplied checks. No configured conflict was found.
Partner coverage
The retained contributors need no additional partner under the supplied checks; no extra combination benefit is established.
Conflicts
No configured conflict was found; the supplied checks do not assess every possible interaction.
Effective doses
Every retained contributor reaches the saved minimum amount condition; this is distinct from demonstrating an effective fatigue-treatment regimen.
Study evidence
Thiamin Disputed 12 studies

Ingredients

IngredientAmount per servingScore
Vitamin C (Ascorbic Acid)
300 mg
Thiamine (Thiamine Mononitrate)
15 mg 60
Riboflavin
14.3 mg 58
Niacin (Niacinamide)
50 mg 81
Vitamin B6 (Pyridoxine Hydrochloride)
5 mg
Pantothenic Acid (D-Calcium Pantothenate)
10 mg
Calcium (Calcium Carbonate, Dicalcium Phosphate)
175 mg
Gluten Free Adults 18–50
Report overview
A- Active Ingredient Quality & BioavailabilityC+ Dose, Safety & Label TransparencyA+ Value
Each serving provides 50 mg of niacin as niacinamide, a standard vitamin B3 form. The amount receives a more cautious form-specific assessment, and a whole-product serving costs about $0.07.
How this ingredient is rated

Active Ingredient Quality & Bioavailability86

Niacinamide is a standard form of vitamin B3 in the general context captured for this product.
Niacin Form & Goal Alignment
Niacinamide is a standard form suited to the general context captured in the evaluation.
Precursor Source Quality
Niacinamide is a standard form; the saved facts do not identify an advanced NAD-related claim.

Dose, Safety & Label Transparency67

The form and 50 mg of niacin per serving are identified. The amount receives a more cautious assessment for this form.
Clarity of Chemical Form
The saved facts identify the niacin form as niacinamide.
Form-Specific Dosage Efficacy
The 50 mg of niacin per serving receives a more cautious assessment for niacinamide.
Flush Risk & Safety Labeling
Niacinamide is generally non-flushing; no no-flush claim is recorded in the supplied facts.

Value100

A whole-product serving costs about $0.07; that is the price of the serving, not a separate price for niacin.
Price Per Effective Serving
A whole-product serving costs about $0.07; that is the price of the serving, not a separate price for niacin.
C- Active Ingredient Quality & BioavailabilityB- Dose, Safety & Label TransparencyD- Value
Each serving provides 15 mg of thiamin, a moderate amount, and it comes from thiamine mononitrate, a standard water-soluble form. Based on the whole-product price, that works out to about $0.50 per 100 mg of thiamin, a high cost on that basis.
How this ingredient is rated

Active Ingredient Quality & Bioavailability58

Thiamine Mononitrate is a standard water-soluble form of thiamin. A color additive or titanium dioxide is flagged.
Thiamin Chemical Form
Thiamine Mononitrate is a standard water-soluble form of thiamin.
Excipient Purity
The evaluation flags a color additive or titanium dioxide.

Dose, Safety & Label Transparency72

The label states 15 mg of thiamin per serving, a moderate amount.
Thiamin Dosage Potency
Each serving provides 15 mg of thiamin, a moderate amount in the evaluation.
Label Transparency & Proprietary Blends
The label states the thiamin amount and source.

Value40

The whole-product price works out to about $0.50 per 100 mg of thiamin, a high cost on that basis.
Price per Declared Dose
The whole-product price works out to about $0.50 per 100 mg of thiamin, a high cost on that basis.
Riboflavin · 14.3 mg OverallScore58
F Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyA+ Value
The serving provides 14.3 mg of standard riboflavin, which the body converts to an active form. A whole-product serving costs about $0.07.
How this ingredient is rated

Active Ingredient Quality & Bioavailability30

The identified form is standard riboflavin, which the body converts to an active form.
Riboflavin Form Quality
Standard riboflavin requires conversion to an active form.

Dose, Safety & Label Transparency64

The serving provides 14.3 mg of standard riboflavin; the evaluation flagged none of the artificial additives it checks.
Dosage for Energy & Metabolism
The recorded serving amount is 14.3 mg of riboflavin.
R5P Elemental Yield Transparency
Separate phosphate-yield disclosure does not apply to standard riboflavin.
Additive Purity
The saved evaluation did not flag the artificial additives it checks.

Value100

The whole-product serving costs about $0.07 and provides 14.3 mg of riboflavin.
Price per Serving Value
The whole-product serving costs about $0.07 and provides 14.3 mg of riboflavin.
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. 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