Vitamin B-2 400 mg

Vitamin B-2 400 mg

Best Naturals4.8 (355 ratings)
Format:Capsule Quantity: 120 Capsule(s) · 120 servings
$15.05 $0.12 per serving
iHerbLowest$15.05Vitacost$15.49

About this product

One clearly listed ingredient supplies 400 mg of vitamin B2 per capsule. The design is focused, but the amount greatly exceeds everyday nutritional needs.

Standard riboflavin is a serviceable form but does not provide the direct coenzyme form found in some lower-dose alternatives. The capsule has no listed absorption or sustained-release feature.

The bottle provides a practical extended supply. Serving value is favorable for a product at this potency.

Who is it for
  • Adults who have deliberately selected a 400 mg riboflavin plan
  • People wanting that amount in one capsule
Best for
  • Purposeful high-dose riboflavin use
  • A simple one-active supplement

Pros

  • Clearly disclosed 400 mg amount
  • Single-active formula
  • One-capsule serving
  • Simple dose tracking

Cons

  • Far above routine vitamin B2 needs
  • Uses standard rather than coenzyme riboflavin
  • No enhanced-delivery feature
  • Little dose flexibility below 400 mg

Warnings

  • The very high riboflavin amount should be used for a defined purpose rather than routine nutritional insurance.
  • Bright yellow urine is expected with riboflavin and is harmless.
  • Nausea, loose stools, or increased urination can occur in sensitive users at high intake.

Product analysis

80 out of 100
A clear single-ingredient 400 mg riboflavin capsule for intentional high-dose use. Its potency is not necessary for ordinary daily nutrition, and value is strong.

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

Nutrient quality83

The riboflavin amount is meaningful, although the standard form requires conversion. Very high potency reduces suitability for routine general use.

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Ingredient transparency81

Active ingredients and amounts are disclosed without a hidden key dose. Full usage directions and inactive ingredients are not supplied.

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Customer satisfaction67

Customer ratings are strong with an adequate volume of ratings. Specific review comments are absent, so recurring complaints and purpose-matched experiences cannot be judged.

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Value for money89

Serving economics are highly favorable for the supplied amount. A focused ingredient list preserves core value.

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Format
Capsule
Container
120 Capsule(s)
Per serving
$0.12
Customer rating
4.8 · 355 ratings
Report analysis

Ingredients

IngredientAmount per servingScore
Riboflavin
400 mg 72
Gluten Free Adults 18–50 Dairy Free Sugar Free
Report overview
Riboflavin · 400 mg OverallScore72
F Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value
It provides 400 mg of standard riboflavin, at the upper end of the stated high-potency range. The supplied facts do not report artificial additives, and this form has no phosphate-yield ambiguity. The cost per serving is low.
How this ingredient is rated

Active Ingredient Quality & Bioavailability30

It lists standard riboflavin rather than R5P, the active coenzyme form of B2.
Riboflavin Form Quality
The listed form is standard riboflavin, not R5P.

Dose, Safety & Label Transparency100

The 400 mg amount is at the upper end of the high-potency range. The saved facts don't report artificial additives.
Dosage for Energy & Metabolism
At 400 mg, it reaches the upper end of the stated 50–400 mg high-potency range.
R5P Elemental Yield Transparency
Standard riboflavin is listed directly, so no phosphate-yield estimate is needed.
Additive Purity
No artificial additives are reported in the saved facts.

Value100

The cost per serving is low.
Price per Serving Value
The cost per serving is low.
View ingredientView products
Loading alternative details
83 Performance

R-5-P Coenzymated Vitamin B-2 50 mg

Swanson Ultra

Active riboflavin 5-phosphate provides a clearer form-quality upgrade over the original’s standard riboflavin at 400 mg. The supplied label provides active riboflavin 5-phosphate at 50 mg, though the phosphate weight may not state the exact riboflavin yield and full directions are missing.

83 Performance

BioCoenzymated Riboflavin 5'-Phosphate 50 mg

Natural Factors

Active riboflavin 5-phosphate provides a clearer form-quality upgrade over the original’s standard riboflavin at 400 mg. The supplied label provides active riboflavin 5-phosphate at 50 mg, though the phosphate weight may not state the exact riboflavin yield and full directions are missing.

79 Performance

Riboflavin 5'-Phosphate

Thorne

Active riboflavin 5-phosphate provides a clearer form-quality upgrade over the original’s standard riboflavin at 400 mg. The supplied label provides active riboflavin 5-phosphate at 36.5 mg, though the phosphate weight may not state the exact riboflavin yield and full directions are missing.

83 Budget

B-2 100 mg

NOW

Lower serving cost makes standard riboflavin at 100 mg the more economical riboflavin option. Compared with the original’s standard riboflavin at 400 mg, the supplied formula changes the dose, form, or supporting ingredients, so those differences should guide the choice.

83 Budget

Riboflavin 100 mg

Swanson

Lower serving cost makes standard riboflavin at 100 mg the more economical riboflavin option. Compared with the original’s standard riboflavin at 400 mg, the supplied formula changes the dose, form, or supporting ingredients, so those differences should guide the choice.

83 Budget

Riboflavin Vitamin B2 100 mg

Nature's Way

Lower serving cost makes standard riboflavin at 100 mg the more economical riboflavin option. Compared with the original’s standard riboflavin at 400 mg, the supplied formula changes the dose, form, or supporting ingredients, so those differences should guide the choice.

83 Value

Vitamin B2 100 mg

NaturesPlus

A stronger quality-to-cost balance makes standard riboflavin at 100 mg a practical value alternative to the original’s standard riboflavin at 400 mg. The supplied label keeps the riboflavin form and amount assessable, while the different dose, format, or supporting ingredients may affect individual fit.

82 Value

Vitamin B2 100 mg

Nutricost

A stronger quality-to-cost balance makes standard riboflavin at 100 mg a practical value alternative to the original’s standard riboflavin at 400 mg. The supplied label keeps the riboflavin form and amount assessable, while the different dose, format, or supporting ingredients may affect individual fit.

82 Value

Vitamin B2 100 mg

Solgar

A stronger quality-to-cost balance makes standard riboflavin at 100 mg a practical value alternative to the original’s standard riboflavin at 400 mg. The supplied label keeps the riboflavin form and amount assessable, while the different dose, format, or supporting ingredients may affect individual fit.

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