Vitamin B2 (Riboflavin) (Riboflavin) — Uses, Dosage, Side Effects & Safety

Drug class: Water-soluble vitamin (Vitamin B complex)

Overview

Vitamin B2, also known as riboflavin, is an essential water-soluble vitamin that helps your body convert food into energy. It plays a key role in maintaining healthy skin, eyes, nerves, and red blood cells. Riboflavin is also important for normal cell growth and function. Riboflavin is used to prevent and treat riboflavin deficiency, which can cause symptoms like sore throat, swelling of the mouth, cracks at the corners of the mouth, and skin disorders. It may also be recommended for certain types of headaches (such as migraine prevention), and as part of a vitamin B complex supplement. Most people get enough riboflavin from a balanced diet, but supplementation may be needed in cases of poor nutrition, certain medical conditions, or increased requirements (such as pregnancy).

Therapeutic uses

  • Riboflavin deficiency (ariboflavinosis)
  • Migraine prevention
  • Cataract prevention
  • Glaucoma treatment

For related Vitamin B2 (Riboflavin) guidance, compare Biotin (B7) and Migraines: Symptoms, Causes, Diagnosis, and Treatment.

Common side effects

  • Bright yellow urine
  • Diarrhea
  • Nausea
  • Abdominal cramps
  • Increased urination

Frequently Asked Questions about Vitamin B2 (Riboflavin)

What is Vitamin B2 (Riboflavin) used for?

Vitamin B2 is used to prevent and treat riboflavin deficiency, support energy production, and may be used for migraine prevention and as part of B complex supplementation.

Is riboflavin safe during pregnancy and breastfeeding?

Riboflavin is considered safe in recommended dietary amounts during pregnancy and breastfeeding. Higher doses should only be used under medical supervision.

Can I take riboflavin with other vitamins?

Yes, riboflavin is often included in B complex and multivitamin supplements. Avoid excessive doses from multiple sources unless directed by your healthcare provider.

What foods are rich in riboflavin?

Foods high in riboflavin include milk, eggs, green vegetables, lean meats, nuts, and enriched cereals.

What happens if I take too much riboflavin?

Excess riboflavin is usually excreted in urine and is not associated with toxicity. Very high doses may cause harmless yellow-orange urine.

How do I know if I have a riboflavin deficiency?

Symptoms of deficiency include sore throat, cracks at the corners of the mouth, skin disorders, and eye problems. Diagnosis is confirmed by a healthcare provider.

Can riboflavin help with migraines?

Yes, some studies support the use of high-dose riboflavin (400 mg daily) for migraine prevention. Consult your doctor for guidance.

Educational information only. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.