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Riboflavin 400 mg

Seeking Health
4.9
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(948 ratings)
Riboflavin 400 mg
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Score74
Mixed standard and active riboflavin forms offer useful form breadth, but the duplicated 400 mg entries make the true dose unclear. Moderate value does not compensate for that ambiguity.
How scoring works
Quantity:60 Capsule(s) • (60 servings)
Goals:

Score 74

Mixed standard and active riboflavin forms offer useful form breadth, but the duplicated 400 mg entries make the true dose unclear. Moderate value does not compensate for that ambiguity.
How scoring works
$25.00($0.41 per serving)
Pure Formulas
$ 25.00
iHerb
$ 25.00
iHerb
$ 25.00
Vitacost
$ 25.03
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Analysis

The capsule combines conventional riboflavin with riboflavin 5'-phosphate sodium, giving both a standard and active coenzyme form. The listed 400 mg potency is intended for deliberate high-dose use rather than everyday nutritional maintenance.

Both forms carry the same listed quantity, so the label does not make clear whether 400 mg is the combined total or the amount of each entry. That ambiguity matters more than the theoretical form breadth because users cannot verify the true split.

The package provides a moderate supply for assessing regular use. Value is moderate, making the formula most relevant to users who specifically want mixed B2 forms and can clarify the label.

Who is it for
  • Adults specifically seeking mixed riboflavin forms
  • Users willing to verify the dose split with the manufacturer
Best for
  • High-dose mixed-form B2 supplementation
  • Combining standard riboflavin with riboflavin 5-phosphate

Pros

  • Includes an active coenzyme form
  • Single-capsule serving
  • No unrelated active ingredients
  • Moderate bottle supply

Cons

  • Actual dose split is unclear
  • Very high listed potency
  • Only moderate serving value
  • No purity or release details

Warnings

  • Clarify whether 400 mg is the combined amount or the amount of each riboflavin entry before use.
  • Bright yellow urine is expected with riboflavin and is harmless.
  • Very high riboflavin intake may cause nausea, loose stools, or increased urination in sensitive users.

Nutrient quality

87 Highest impact

Form quality is favorable because a riboflavin phosphate form is included. Very high potency reduces suitability for routine general use.

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Ingredient transparency

64 Moderate impact

Both riboflavin entries have listed weights, but their actual vitamin contributions are ambiguous. Full usage directions and inactive ingredients are not supplied.

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Customer satisfaction

68 High impact

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 money

77 High impact

The serving cost is elevated but partly supported by formula quality. A focused ingredient list preserves core value.

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Ingredients

IngredientAmount per serving
Riboflavin (Riboflavin 5'-Phosphate Sodium)
 400 mg
Gluten Free Adults 18–50 Dairy Free
Report overview
Riboflavin (Riboflavin 5'-Phosphate Sodium) · 400 mg OverallScore76
B- Active Ingredient Quality & BioavailabilityB Dose, Safety & Label TransparencyB+ Value

A blend of standard riboflavin and the active phosphate form offers broader form quality than standard riboflavin alone. The high-potency serving reaches the top of the stated useful range, but the label does not clarify the actual vitamin yield from the phosphate salt. A quick-dissolving capsule and competitive cost per serving support practical daily use.

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79 Performance

Riboflavin 5'-Phosphate

Thorne
<p>Stronger supplied quality and collection evidence favors active riboflavin 5-phosphate at 36.5 mg over the original’s active riboflavin 5-phosphate at 400 mg. The formula remains closely aligned with riboflavin use, while dose, format, and missing label details remain practical trade-offs.</p>
77 Performance

Nu-Thera Multivitamin with P5P

Kirkman
<p>Stronger supplied quality and collection evidence favors active riboflavin 5-phosphate at 7.5 mg over the original’s active riboflavin 5-phosphate at 400 mg. The formula remains closely aligned with riboflavin use, while dose, format, and missing label details remain practical trade-offs.</p>
83 Performance

B-2 100 mg

NOW
<p>Stronger supplied quality and collection evidence favors standard riboflavin at 100 mg over the original’s active riboflavin 5-phosphate at 400 mg. The formula remains closely aligned with riboflavin use, while dose, format, and missing label details remain practical trade-offs.</p>
83 Budget

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

Swanson Ultra
<p>Lower serving cost makes active riboflavin 5-phosphate at 50 mg the more economical riboflavin option. Compared with the original’s active riboflavin 5-phosphate at 400 mg, the supplied formula changes the dose, form, or supporting ingredients, so those differences should guide the choice.</p>
83 Budget

BioCoenzymated Riboflavin 5'-Phosphate 50 mg

Natural Factors
<p>Lower serving cost makes active riboflavin 5-phosphate at 50 mg the more economical riboflavin option. Compared with the original’s active riboflavin 5-phosphate at 400 mg, the supplied formula changes the dose, form, or supporting ingredients, so those differences should guide the choice.</p>
76 Budget

Coenzymated B-2

Source Naturals
<p>Lower serving cost makes active riboflavin 5-phosphate at 18 mg the more economical riboflavin option. Compared with the original’s active riboflavin 5-phosphate at 400 mg, the supplied formula changes the dose, form, or supporting ingredients, so those differences should guide the choice.</p>
83 Value

Vitamin B2 100 mg

NaturesPlus
<p>A stronger quality-to-cost balance makes standard riboflavin at 100 mg a practical value alternative to the original’s active riboflavin 5-phosphate 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.</p>
83 Value

Riboflavin 100 mg

Swanson
<p>A stronger quality-to-cost balance makes standard riboflavin at 100 mg a practical value alternative to the original’s active riboflavin 5-phosphate 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.</p>
83 Value

Riboflavin Vitamin B2 100 mg

Nature's Way
<p>A stronger quality-to-cost balance makes standard riboflavin at 100 mg a practical value alternative to the original’s active riboflavin 5-phosphate 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.</p>
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