Serving Size: 1 Capsule
Suggested Use: Take 1 capsule one to three times daily or as recommended by your health-care practitioner.

Riboflavin 5'-Phosphate is a more readily usable form of B2 than riboflavin.* It is an important cofactor for the activation and conversion of other B vitamins, including niacin and vitamin B6.* 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.* 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.*

Amount Per Serving:
Riboflavin (as Riboflavin 5’-Phosphate Sodium)………36.5 mg
Other Ingredients: Hypromellose (derived from cellulose) capsule, Microcrystalline Cellulose, Silicon Dioxide, Calcium Laurate

This product is Gluten Free.

We ship within United States only at this time.

Free economy shipping (5-8 days) - no minimums.

Free expedited shipping (1-3 days) over $50.00.

Express shipping (1-3 days) for orders less than $50: $9.95.

Priority and overnight orders placed on business days before 1:00 PM EST are typically shipped same-day. Orders placed on weekends and holidays will be processed the following business day.

Some of our orders are delivered through Emerson Ecologics, the leading professional grade supplement distributor in North America. Click here to see our complete shipping policy

Note: Orders placed with our standard delivery method (delivery in 5-8 business days) before the order cutoff aren't guaranteed to ship same-day but will ship in time to arrive within the delivery window. Standard shipments to Alaska, Hawaii, and Puerto Rico will arrive in 10-13 business days.

Return policy

We're happy to accept returns for products purchased in the last 60 days that are unopened and aren't heat-sensitive.

We do not provide return shipping labels for product returns. However, we will issue a full refund for the product cost when your return is processed and we will waive all restocking fees.Any supplement orders delivered through Fullscript, must be shipped back to Fullscript. Contact our customer service either through our Contact us page on the website or by emailing Wellkasa customer service at shop@wellkasa.com.  If your return is compliant to this return policy, our customer service shall provide you with a return shipping address within 48 hours. If we provide you with an RMA number, you must clearly write this RMA number on the outside of the return shipment to ensure successful processing your refund.

Return processing times

Returns must be processed by our warehouse before refunds can be applied. This can take 1-3 weeks once the item is received at the warehouse. You'll receive an email confirming your refund once it has been completed.

Payment refunds

The refund will be applied to your original method of payment once your return has been processed. Depending on your card provider or financial institution, it may take 3-5 business days for the funds to be reflected in your account.

Return shipping labels

We do not provide return shipping labels for product returns. However, we will issue a full refund for the product cost when your return is processed and waive all restocking fees.

Click here to see our complete Returns and Refunds Policy

Tamper Evident: Use only if bottle is sealed. If pregnant, consult your health-care practitioner before using this product. Store tightly sealed in a cool, dry place.
*These statements have not been evaluated by the Food & Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.

This product should only be purchased by end user or direct caregiver of the end user. The purchase of this product is prohibited for resale.