Vitamin B2 (Riboflavin)

Vitamin B2 is needed to process amino acids and fats, activate vitamin B6 and folic acid, and help convert carbohydrates into ATP, the body's fuel. Under some circumstances, vitamin B2 can act as an antioxidant.

RDI

1.7 mg

Deficiency

Vitamin B2 deficiency can occur in alcoholics, and may be more likely in people with cataracts or sickle cell anemia. Signs of deficiency include cracks in skin at corner of mouth; soreness of lips, mouth and tongue; scaling of skin around nose, mouth, scrotum, forehead, ears and scalp; heightened sensitivity to light; conjunctivitis and watering of eyes; anemia

Overdose

Riboflavin appears to be non-toxic, although large doses may cause diarrhea and frequent urination.

Synergists

Vitamin B2 works with vitamins B1, B3, and B6, so vitamin B2 should be taken as part of a B-complex supplement.

Antagonists

TBD or none

Food Sources

Lean meats, eggs, legumes, nuts, green leafy vegetables, dairy products, and milk provide riboflavin in the diet. Breads and cereals are often fortified with riboflavin. Because riboflavin is destroyed by exposure to light, foods with riboflavin should not be stored in glass containers that are exposed to light.

Medicinal Purpose

Vitamin B2 in a very high dosage has been shown to minimize duration of migraine headaches. The very high dosage requires a prescription.

Vitamin B2 has also been shown to help with canker sores, cateracts, and may help with athletic performance.

Interactions with common drugs

Certain chemotherapy drugs may cause depletion of Vitamin B2. Also, low Vitamin B2 levels may be a symptom of toxicity from chemotherapy drugs.

Oral contraceptive use is associated with decreased levels of B-vitamins. B-Vitamins may enhance the effectiveness of tricyclic antidepressants.

Recent Studies

Many recent studies have shown that riboflavin is beneficial for the treatment of migraines and cataracts.