Swanson Vitamin B2 (Riboflavin) 100 mg - 100 Capsules

What is vitamin B2 (riboflavin)?

Vitamin B2, also known as riboflavin, is a water-soluble vitamin essential for energy metabolism and proper cell function. It belongs to the B vitamin complex and acts as a precursor to the coenzymes flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD), which are fundamental in redox reactions. This Swanson supplement provides 100 mg of pure riboflavin per capsule, a dose significantly higher than the recommended daily intake (1.4-1.6 mg in adults), ideal for those seeking an extra boost under professional supervision.

Main scientifically backed benefits

According to the European Food Safety Authority (EFSA), riboflavin contributes to multiple physiological functions:

• Normal energy metabolism: Riboflavin helps convert food into usable energy for cells, which can promote daily vitality.
• Nervous system function: It participates in the synthesis of neurotransmitters and in the protection of neurons against oxidative stress.
• Maintenance of mucous membranes: It supports the health of mucous membranes, including those of the digestive and respiratory tracts.
• Red blood cell formation: It intervenes in the production of erythrocytes, contributing to oxygen transport.
• Iron metabolism: It facilitates the absorption and utilization of dietary iron.
• Antioxidant protection: It acts as a cofactor for glutathione reductase, an enzyme that protects cells from oxidative damage.

These benefits are recognized by the EFSA and appear in the register of authorized health claims in the European Union.

Recommended dosage and available forms

The recommended daily dose of riboflavin for adults is 1.4-1.6 mg. However, this supplement provides 100 mg per capsule, an amount well above basic needs. Such high doses are usually used in specific contexts, such as under the indication of a healthcare professional. Swanson offers riboflavin in its inactive form (riboflavin), which is converted in the body into the active forms FMN and FAD. Bioavailability is good, although taking it with food can improve its absorption. It is recommended to take one capsule daily with water and food, without exceeding the indicated dose.

Who should take riboflavin?

Riboflavin can be beneficial for people with restrictive diets (vegans, vegetarians), athletes seeking metabolic support, individuals exposed to oxidative stress, or those with increased needs due to certain health conditions. However, before starting any supplementation, it is advisable to consult a doctor or nutritionist, especially with high doses.

Possible side effects and contraindications

Riboflavin is generally safe and well tolerated. Being water-soluble, excess is eliminated in the urine, which can stain it a deep yellow color, a harmless and expected effect. At very high doses (such as 100 mg), mild gastrointestinal discomfort could occur. No severe toxicities have been described. It is contraindicated in case of hypersensitivity to any of the components. As with any supplement, do not exceed the recommended daily dose and keep out of the reach of children.

Frequently asked questions

Does riboflavin help with migraines?

Some studies suggest that high doses of riboflavin (400 mg/day) can reduce the frequency of migraines, but this indication is not approved by the EFSA. Consult your doctor.

Can I take riboflavin with other B vitamins?

Yes, it is compatible and often combined in B complexes. No negative interactions are known.

How long does it take to notice the effect?

The effects on energy metabolism can be perceived in weeks, although it varies depending on each person.

Food supplements should not be used as a substitute for a balanced and varied diet. Do not exceed the recommended daily dose.