THORNE Riboflavin 5'-Phosphate (R5P) Vitamin B2 Capsules, 60 ct — Active, Bioavailable B2 for Energy & Methylation Support

THORNE Riboflavin 5'-Phosphate (R5P) delivers the active, bioavailable form of vitamin B2 in a clean, allergen-free capsule for everyday metabolic and methylation support.

This formulation provides riboflavin already converted to its physiologically active phosphate form (R5P), which many people tolerate and utilize more readily than standard riboflavin. Each capsule is crafted without common allergens and with the purity standards THORNE is known for, making it a convenient choice for practitioners and consumers seeking targeted B2 support.

How does THORNE R5P differ from regular riboflavin?

R5P is riboflavin already bound to a phosphate group, so it bypasses some activation steps the body otherwise must perform. That can be important for individuals with genetic variations or metabolic bottlenecks that slow conversion of nutrients to their active forms.

• Contains riboflavin in its bioactive phosphate form (R5P) for quicker cellular use
• May reduce reliance on internal conversion pathways
• Suitable when a practitioner recommends active B-vitamin forms

What benefits can I expect from taking active vitamin B2?

Active vitamin B2 supports cellular energy processes and contributes to the normal formation of other B vitamins. It also plays a role in one-carbon metabolism pathways that are important for methylation activity.

• Supports energy production through normal metabolic pathways*
• Helps maintain formation of niacin and active B6
• Provides nutritional support for healthy methylation processes*

Is THORNE R5P safe for people with food sensitivities?

THORNE manufactures this R5P formula without many of the common allergens and uses strict purity controls. The product is free of gluten, soy, dairy, shellfish, fish, eggs, tree nuts, and peanuts, minimizing exposure to major allergens for most users.

• Produced free from major food allergens and gluten
• Formulated to uphold THORNE’s high-purity standards
• Appropriate for sensitive individuals when used as directed

How should I integrate these capsules into my routine?

Follow the dosage guidance provided on the label or as recommended by your healthcare practitioner. Capsules can be taken with food to support absorption and to align with other B-vitamin-containing products in a daily regimen.

• Take according to label or practitioner instructions
• Can be combined with other B-complex products when advised
• Stored in a cool, dry place to maintain potency

Who is this for: THORNE Riboflavin 5'-Phosphate is intended for adults seeking the active form of vitamin B2—especially those advised by a clinician to use bioactive B-vitamins, people with sensitivities to common allergens, and anyone who wants a high-purity supplement from a clinically trusted brand. It is not a medical treatment and should be taken under the guidance of a healthcare professional when used to address specific health concerns.

Ingredients

One Capsule Contains: Riboflavin (as Riboflavin 5'-Phosphate Sodium) 36.5 mg.
Other Ingredients: Hypromellose (derived from cellulose) capsule, Microcrystalline Cellulose, Silicon Dioxide, Calcium Laurate.