Riboflavin is one of the eight B vitamins, all of which assist in converting food to energy. Also known as B-2, riboflavin functions as an antioxidant as well, which means it might reduce the affects of free radicals that cause damage to cells and DNA. Because all B vitamins are water soluble, the body doesn't store riboflavin. However, you need to consume enough daily to support healthy metabolism. Vitamin B-2 also helps your body use vitamin B-6, niacin and folate effectively.
Correcting Deficiency
If you're in good health and eat a well-balanced diet, vitamin B-2 deficiency is not likely. When riboflavin deficiency does occur, it typically is accompanied by deficiencies of other water soluble vitamins. Riboflavin deficiency might cause swelling and soreness in the mouth and throat, a sore tongue, sensitivity to light, fatigue and digestive problems. If deficiency occurs, your doctor might advise taking B-complex supplements or adding good sources of riboflavin to your diet.
Possible Functions
MedlinePlus notes that while riboflavin in your diet and from dietary supplements is effective for preventing and treating riboflavin deficiency, high doses of 400 mg daily might also help prevent migraines. However, riboflavin is not effective at relieving the pain associated with migraines, nor does it lessen the duration of migraines. Riboflavin intakes of 2.6 mg daily might also help prevent cataracts, according to MedlinePlus.
Potential Connections
Although you might have heard that riboflavin helps with acne, memory loss, immunity, muscle cramps and canker sores, MedlinePlus says the evidence is insufficient to rate the effectiveness of riboflavin for these purposes. While existing data suggest that riboflavin might help patients suffering from lactic acidosis associated with acquired immunodeficiency syndrome, or AIDS, more research is needed. Also under study is the potential preventive role of riboflavin in reducing the risk for cervical cancer, says MedlinePlus.
Considerations
The recommended dietary allowance of riboflavin for women is 1.1 mg a day, while men need around 1.3 mg daily, according to the Linus Pauling Institute. Sources of riboflavin include fortified cereal, skim milk, eggs, almonds and spinach. Riboflavin supplements are available individually and as part of B-complex supplements or multivitamins. Follow your doctor's advice about whether you need supplementation and the appropriate dosage.
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