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Riboflavin 5'-Phosphate

Thorne
4.9
★ ★ ★ ★ ★
(2033 ratings)
Riboflavin 36.5 mg
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Score95

A premium, bioactive R-5-P capsule from a top-tier brand for optimized cellular energy and absorption.

How scoring works
Quantity:60 Capsule(s) • (60 servings)
Goals:

Score 95

A premium, bioactive R-5-P capsule from a top-tier brand for optimized cellular energy and absorption.

How scoring works
$32.00($0.53 per serving)
iHerb
$ 32.00
Pure Formulas
$ 32.00
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Analysis

This product uses the active R-5-P form of riboflavin at a 36.5 mg dose. This is a highly bioavailable amount that is ready for immediate enzymatic use without needing liver conversion. Thorne is known for exceptionally clean formulas, making this a great choice for sensitive individuals.

The capsule format ensures efficient absorption and mitochondrial support. While the price per serving is higher than budget brands, the quality of the active ingredient is superior. It is ideal for those seeking advanced nutritional support with maximum purity.

Pros

  • Bioactive coenzyme form of B2
  • Cleanest formula with minimal additives
  • Highly bioavailable and efficient
  • Trusted brand with high quality standards

Cons

  • High price per serving
  • Lower mg count than standard supplements
  • Only 60 capsules per bottle

Warnings

  • Urine will turn bright yellow
  • More expensive for long-term use

Nutrient quality

99 Highest impact

Selection of the R-5-P form provides the most biologically active version of riboflavin available for supplementation. The dosage is appropriately calibrated to support daily energy needs while maintaining an excellent safety profile.

Ingredient transparency

100 Highest impact

Labeling is highly clear and specifically identifies the coenzyme form, ensuring the user understands the quality of the nutrient. Transparency is high, with no proprietary blends or obscured ingredient information included on the facts panel.

Customer satisfaction

96 Highest impact

Exceptionally high average ratings and a significant number of reviews reflect deep user trust and consistent product performance. Feedback often mentions the noticeable benefits for energy and neurological resilience when using this active form.

Value for money

81 Highest impact

The premium price per serving is justified by the use of the high-quality active coenzyme form in a clean formula. For users requiring optimal riboflavin status, the superior bioavailability offers meaningful functional value.

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Ingredients

IngredientAmount per serving
Riboflavin (Riboflavin 5'-Phosphate Sodium)
36.5 mg
Gluten Free Adults 18–50
Report overview
A+ Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyD+ Value
This specialized supplement provides riboflavin exclusively in its bioactive coenzyme form for maximum cellular uptake. It is an excellent choice for individuals requiring immediate metabolic activation without liver conversion.
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