Riboflavin 5-Phosphate

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  • ACTIVE B2: The active form of vitamin B2 more readily used by the body*
  • B VITAMIN FORMATION: Important for the formation of other B vitamins, including niacin and active B6
  • METHYLATION: Provides support for healthy methylation*
  • FREE FROM: Every Thorne product is made with the purest possible ingredients – without gluten or other major allergens (eggs, tree nuts, peanuts). This product also contains no soy, dairy, yeast, shellfish, or fish.


Riboflavin‚ also known as vitamin B2‚ is necessary for the body to be able to activate vitamin B6. Riboflavin is also necessary for the body’s conversion of tryptophan to niacin‚ and the conversion of folate to folate’s various active forms. In addition‚ riboflavin plays a crucial role in the metabolism of fats and glucose‚ the synthesis of red blood cells‚ healthy methylation‚ and the production and regulation of certain hormones.

To be utilized by the body‚ however‚ riboflavin must first be converted to its active form – riboflavin 5′-phospate (R5P). A compromised digestive system‚ however‚ can adversely affect the body’s ability to convert riboflavin to R5P. And certain prescription medications can also compromise the absorption of riboflavin‚ putting it in a state of deficiency. Thorne’s Riboflavin 5′-Phosphate‚ which is not derived from yeast‚ provides supplementation with a bioactive‚ tissue ready form of riboflavin that can be optimally utilized in the body.



Serving Size: One Capsule
Servings Per Container: 60

One Capsule Contains / %DV

Riboflavin (as Riboflavin 5′-Phosphate Sodium) 36.5 mg / 2‚808%

Daily Value (DV)

Other Ingredients: Hypromellose (derived from cellulose) capsule‚ Microcrystalline Cellulose‚ Silicon Dioxide‚ Calcium Laurate. Gluten Free.



Suggested Usage: Take 1 capsule one to three times daily or as recommended by your health professional.



Safety Information
If pregnant or nursing, consult your health-care practitioner before using this product. Do not use in children without a doctors permission.
Legal Disclaimer
*These statements have not been evaluated by the Food & Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease. Please contact your healthcare professional immediately if you experience any unwanted side effects. The information contained herein is for informational purposes only and does not establish a doctor-patient relationship. Please be sure to consult your physician before taking this or any other product.

Additional information

Weight .03 kg
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