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B-Complex with C

Mason Natural
4.8
★ ★ ★ ★ ★
(112 ratings)
Thiamin 15 mg
Riboflavin 10.2 mg
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Score77
A clear vitamin C and partial B-complex capsule with simple dosing. Missing B12 and folate and reliance on standard forms reduce completeness.
How scoring works
Quantity:100 Capsule(s) • (100 servings)
Goals:
Energy

Score 77

A clear vitamin C and partial B-complex capsule with simple dosing. Missing B12 and folate and reliance on standard forms reduce completeness.
How scoring works
$8.16($0.08 per serving)
iHerb
$ 8.16
Pure Formulas
$ 8.99
Vitacost
$ 8.99
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Analysis

The capsule supplies 300 mg vitamin C with thiamine, riboflavin, niacinamide, B6, and pantothenic acid. These nutrients support normal antioxidant defenses and energy metabolism.

Amounts are easy to assess, but all visible B vitamins use standard rather than active coenzyme forms. Folate, B12, and biotin are absent, so the product is not a complete B-complex.

It fits users seeking vitamin C plus a limited set of B vitamins rather than full methylation coverage. The 50 mg niacinamide amount may be more than some users need for routine maintenance.

Who is it for
  • Adults seeking vitamin C with basic B vitamins
  • Users comfortable with standard nutrient forms
  • People not needing folate or B12 from this product
Best for
  • Antioxidant support
  • Basic energy-metabolism support
  • Vitamin C intake

Pros

  • Clearly stated active amounts
  • Includes 300 mg vitamin C
  • Simple six-nutrient formula

Cons

  • Omits folate and vitamin B12
  • Uses standard B-vitamin forms
  • Niacinamide amount is relatively high

Warnings

  • Niacinamide may cause nausea or other intolerance in sensitive users
  • Unbuffered vitamin C may irritate a sensitive stomach
  • Do not treat it as a complete B-complex because folate and B12 are absent

Nutrient quality

72 High impact

The listed vitamins have useful amounts, but several major B vitamins are absent. Niacinamide at 50 mg is elevated but not clearly excessive for most adults.

Ingredient transparency

80 High impact

Every listed active ingredient has a specific amount. No proprietary blend hides a listed active dose.

Customer satisfaction

67 High impact

The very strong rating is supported by a moderate review base. No review text is available to assess recurring complaints or firsthand results.

Value for money

90 Highest impact

Basic forms and incomplete coverage are proportionate to the very low cost. A long bottle life provides excellent practical value per serving.

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Goals

Energy
Essential Energy Nutrients
Energy
Impact
High effect
B Goal FitC+ Strength of SupportC CoverageA Formula Quality
Vitamin B5 · 10 mgRiboflavin · 10.2 mgThiamin · 15 mg

Thiamine, riboflavin, niacin, vitamin B6, and pantothenic acid support several steps in fuel metabolism. Vitamin C adds antioxidant support around the metabolic formula.

The vitamins use conventional forms, and no vitamin B12, mitochondrial active, stimulant, or adaptogen is included. It is a solid metabolic-maintenance blend rather than a broad or acute energy product.

Study evidence
Riboflavin Mixed 6 studies
Thiamin Disputed 12 studies

Ingredients

IngredientAmount per serving
Vitamin C (Ascorbic Acid)
 300 mg
Vitamin B1 (Thiamine Mononitrate)
 15 mg
Vitamin B2 (Riboflavin)
 10.2 mg
Niacin (Niacinamide)
 50 mg NE
Vitamin B6 (Pyridoxine Hydrochloride)
 5 mg
Pantothenic Acid (Calcium Pantothenate)
 10 mg
Gluten Free Adults 18–50
Report overview
Thiamin (Thiamine Mononitrate) · 15 mg OverallScore65
B- Active Ingredient Quality & BioavailabilityB- Dose, Safety & Label TransparencyD- Value

Thiamine mononitrate provides a standard water-soluble source, and the 15 mg amount provides moderate targeted potency. The conventional capsule lacks enough excipient detail to confirm a cleaner delivery system. Cost per active amount is high for a standard form.

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Riboflavin · 10.2 mg OverallScore52
D- Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyD+ Value

Standard riboflavin requires conversion before it can support energy metabolism. The about 10 mg dose is suited to maintenance rather than high-potency support. The serving cost is low, but the about 10 mg maintenance dose limits value.

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Loading alternative details
89 Performance

Benfotiamine 150 mg

Doctor's Best
<p>Benfotiamine provides a highly bioavailable thiamine form at a potent but practical amount. Its ingredient forms and goal coverage compare favorably because the original has a less focused B-vitamin profile, although its concentrated doses are more appropriate for deliberate use than casual stacking.</p>
88 Performance

Benfotiamine with Thiamine

Lake Avenue Nutrition
<p>Benfotiamine plus a small standard thiamin amount creates a focused high-potency formula. Its ingredient forms and goal coverage compare favorably because the original has a less focused B-vitamin profile, although its concentrated doses are more appropriate for deliberate use than casual stacking.</p>
86 Performance

Benfotiamine 150 mg

California Gold Nutrition
<p>Benfotiamine provides a premium thiamin form at a well-targeted amount. Its ingredient forms and goal coverage compare favorably because the original has a less focused B-vitamin profile, although its concentrated doses are more appropriate for deliberate use than casual stacking.</p>
84 Budget

Vitamin B1 100 mg

Vitamatic
<p>Thiamine mononitrate provides a useful high-potency amount in a simple formula. Its lower serving cost improves value compared with the original, although its concentrated doses are more appropriate for deliberate use than casual stacking.</p>
80 Budget

Super Vitamin B-Complex

Spring Valley
<p>The formula provides broad B-vitamin coverage at measured amounts and strong qualitative value. Its lower serving cost improves value compared with the original, although its concentrated doses are more appropriate for deliberate use than casual stacking.</p>
82 Budget

B-1 100 mg

21st Century
<p>A focused high-potency thiamine supplement provides a clearly disclosed amount in a standard water-soluble form. Its lower serving cost improves value compared with the original, although its concentrated doses are more appropriate for deliberate use than casual stacking.</p>
81 Value

Super B-Complex

Nature Made
<p>Broad B-vitamin coverage and added vitamin C create a simple daily formula with accessible value. The balance of ingredient quality, goal fit, and serving cost is favorable versus the original, although the high pyridoxine amount is less suitable for long-term daily use.</p>
88 Value

Benfotiamine 100 mg with Thiamine

Life Extension
<p>Benfotiamine provides a highly bioavailable thiamine form at a potent but practical amount. The balance of ingredient quality, goal fit, and serving cost is favorable versus the original, although its concentrated doses are more appropriate for deliberate use than casual stacking.</p>
88 Value

Benfotiamine 300 mg

Lake Avenue Nutrition
<p>Benfotiamine provides a highly bioavailable thiamine form at a potent but practical amount. The balance of ingredient quality, goal fit, and serving cost is favorable versus the original, although its concentrated doses are more appropriate for deliberate use than casual stacking.</p>
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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