(RYE boe flay vin)
- Vitamin B2
- Vitamin G
Excipient information presented when available (limited, particularly for generics); consult specific product labeling.
B-2-400: 400 mg
Generic: 50 mg
Generic: 25 mg, 50 mg, 100 mg
Brand Names: U.S.
- B-2-400 [OTC]
- Vitamin, Water Soluble
Component of flavoprotein enzymes that work together, which are necessary for normal tissue respiration; also needed for activation of pyridoxine and conversion of tryptophan to niacin
Readily via GI tract; increased with food
9% eliminated unchanged in urine
Biologic: 66 to 84 minutes
Use: Labeled Indications
Dietary supplement: Oral: 100 mg once or twice daily
Recommended daily intake:
≥19 years: Females: 1.1 mg; Males: 1.3 mg
Pregnancy: 1.4 mg
Lactation 1.6 mg
Refer to adult dosing.
1-6 months: 0.3 mg/day
7-12 months: 0.4 mg/day
Recommended daily intake:
1-3 years: 0.5 mg
4-8 years: 0.6 mg
9-13 years: 0.9 mg
14-18 years: Females: 1 mg; Males: 1.3 mg
Dietary sources of riboflavin include liver, kidney, dairy products, green vegetables, eggs, whole grain cereals, yeast, and mushroom.
Protect from light.
There are no known significant interactions.
Large doses may interfere with urinalysis based on spectrometry; may cause false elevations in fluorometric determinations of catecholamines and urobilinogen
Frequency not defined: Genitourinary: Discoloration of urine (yellow-orange)
• Vitamin deficiency: Single vitamin deficiency is rare; evaluate for other deficiencies.
Water-soluble vitamins cross the placenta. Riboflavin requirements may be increased in pregnant women compared to nonpregnant women (IOM, 1998).
• Discuss specific use of drug and side effects with patient as it relates to treatment. (HCAHPS: During this hospital stay, were you given any medicine that you had not taken before? Before giving you any new medicine, how often did hospital staff tell you what the medicine was for? How often did hospital staff describe possible side effects in a way you could understand?)
• Patient may experience urine discoloration (HCAHPS).
• Educate patient about signs of a significant reaction (eg, wheezing; chest tightness; fever; itching; bad cough; blue skin color; seizures; or swelling of face, lips, tongue, or throat). Note: This is not a comprehensive list of all side effects. Patient should consult prescriber for additional questions.
Intended Use and Disclaimer: Should not be printed and given to patients. This information is intended to serve as a concise initial reference for health care professionals to use when discussing medications with a patient. You must ultimately rely on your own discretion, experience, and judgment in diagnosing, treating, and advising patients.