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Riboflavin (Vit B2) overview for health professionals. Research health effects, dosing, sources, deficiency, side effects, and interactions here.
Riboflavin, also known as vitamin B2, is a water-soluble vitamin that belongs to the vitamin B complex group. Clinicians frequently prescribe riboflavin as part of a combined formulation with other B complex vitamins as a prophylactic supplement to manage and treat vitamin B2 deficiency.
Toxicity A toxic level of riboflavin has not been observed from food sources and supplements. The gut can only absorb a limited amount of riboflavin at one time, and an excess is quickly excreted in the urine. [2]
Definition. Riboflavin, also known as vitamin B 2, is a water-soluble vitamin and is one of the B vitamins. [3][4][5] Unlike folate and vitamin B 6, which occur in several chemically related forms known as vitamers, riboflavin is only one chemical compound.
Vitamin B2, also known as riboflavin, is found in dairy, eggs, meat, salmon, whole grains, and leafy green vegetables. The recommended daily amount for adults is 1.3 mg for men and 1.1 mg for women. Vitamin B2 has not been shown to be toxic in high doses.
The rest is quickly excreted in stool. Even small doses of riboflavin can cause your urine to turn bright yellow (a side effect known as flavinuria). Doses greater than 100mg may cause itchiness, diarrhea, stomach cramps, numbness, light sensitivity, blurriness, and a burning sensation on the skin.
Vitamin B2 deficiency is a significant risk when diet is poor, because the human body excretes the vitamin continuously, so it is not stored. A person who has a B2 deficiency normally lacks...
Go to: Etiology. Riboflavin deficiency can result from inadequate dietary intake or endocrine abnormalities. Riboflavin deficiency also correlates with other vitamin B complexes. Riboflavin naturally occurs in foods such as eggs, dairy products, meats, green vegetables, and grains. Riboflavin works as an antioxidant via the glutathione redox cycle.
People with severe, prolonged vitamin B2 deficiency are most at risk for developing cataracts.
Side Effects. Recommended Dosage. Riboflavin (vitamin B2) is needed for energy production, metabolism, and growth. Available naturally in some meats, chicken, dairy, vegetables, and fruits, this crucial nutrient is also added to many foods and available over the counter as a supplement.