Swanson R-5-P (Riboflavin-5-Phosphate) - Vitamin B2 Supplement, 50 mg, 180 Capsules (3-Pack)

How to Choose the Right Riboflavin Supplement

When it comes to picking a vitamin B2 supplement, the active form makes all the difference. Swanson's R-5-P provides riboflavin-5'-phosphate, the coenzyme form that requires no conversion in the body, offering efficient absorption and utilisation. This 50 mg per capsule formula comes in a convenient 3-pack, each with 60 capsules, giving you up to six months of supply at one capsule daily. Look for third-party tested and GMP-certified products to ensure purity and potency — quality you can count on.

What Is Riboflavin (Vitamin B2)?

Riboflavin, better known as vitamin B2, is a water-soluble vitamin that plays a key role in energy production and cellular function. It forms part of two important coenzymes: flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD), which are vital for breaking down carbohydrates, fats, and proteins into usable energy. It also supports the body's antioxidant defence by helping regenerate glutathione, a powerful antioxidant. While riboflavin is found in foods like dairy, eggs, lean meats, and green vegetables, supplementation can help fill dietary gaps, especially for those with higher needs or restricted diets.

Benefits of Riboflavin

Riboflavin contributes to normal energy-yielding metabolism, making it a popular choice for natural energy support. It also helps maintain normal red blood cells and supports normal vision by protecting the eyes from oxidative stress. Additionally, riboflavin plays a role in maintaining healthy skin and mucous membranes. These benefits are supported by scientific research but are not intended to diagnose, treat, , or prevent any disease. Always read the label and follow directions for use.

Who Should Consider a Riboflavin Supplement?

Riboflavin supplements can be beneficial for individuals with dietary restrictions, such as vegans or those who avoid dairy, as well as athletes or people with high physical demands who need extra energy support. Older adults and those with digestive conditions that impair nutrient absorption may also benefit. Some people use riboflavin for neurological health, but this should be discussed with a healthcare professional. Consult your doctor before starting any new supplement.

Recommended Dosage and Safety

The recommended dietary intake (RDI) for riboflavin is about 1.1–1.3 mg per day for adults, but therapeutic doses range from 50 mg to 400 mg. Swanson's R-5-P suggests one capsule one to two times daily, providing 50–100 mg of riboflavin. Riboflavin is generally safe and well tolerated; excess is excreted in urine, which may turn bright yellow — harmless. No serious side effects at recommended doses. Always consult a healthcare professional before exceeding the daily recommended intake.

Frequently Asked Questions

Can I take riboflavin with food? Yes, taking it with food may improve absorption, especially if the meal contains fats.
Is this product vegan-friendly? Swanson R-5-P capsules are likely vegan, but check the label for specific ingredients.
How long does one bottle last? With one capsule daily, each 60-capsule bottle lasts two months; with two capsules daily, one month. The 3-pack provides up to six months of supply at the lower dose.
What's the difference between riboflavin and riboflavin-5'-phosphate? Riboflavin-5'-phosphate is the active coenzyme form, ready for the body to use without conversion.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, , or prevent any disease.