Thorne Riboflavin 5'-Phosphate 60 Capsules

Thorne Riboflavin 5'-Phosphate is a capsule supplement of R5P, the active form of riboflavin, or vitamin B2. Thorne says it provides a bioactive, tissue-ready form of riboflavin that the body can use without first converting it.

Thorne Riboflavin 5'-Phosphate is vitamin B2, supplied in its active phosphate form. Riboflavin must normally be converted to riboflavin 5'-phosphate before the body can use it, so Thorne supplies that converted form directly.

Thorne says riboflavin is needed to activate vitamin B6, to convert tryptophan to niacin and to convert folate into its active forms. That is why Thorne describes Riboflavin 5'-Phosphate as part of healthy methylation and B vitamin activity.

No. Thorne states that its Riboflavin 5'-Phosphate is not derived from yeast. Shoppers who prefer to avoid yeast-based vitamin sources can note this, and the full ingredient list is printed on the label.

Yes. Thorne notes that certain prescription medications, as well as a compromised digestive system, can affect how the body absorbs or converts riboflavin. Anyone on prescription medicines should ask about Riboflavin 5'-Phosphate first. Please consult your doctor before use.

Thorne Riboflavin 5'-Phosphate contains 60 capsules per bottle. The listing does not specify a serving size, so take the capsules according to the label directions. Please consult your doctor before use.