Vitamin B2 Dosage

How old is patient?

Dosage of Vitamin B2 in details

The dose of a drug and dosage of the drug are two different terminologies. Dose is defined as the quantity or amount of medicine given by the doctor or taken by the patient at a given period. Dosage is the regimen prescribed by the doctor about how many days and how many times per day the drug is to be taken in specified dose by the patient. The dose is expressed in mg for tablets or gm, micro gm sometimes, ml for syrups or drops for kids syrups. The dose is not fixed for a drug for all conditions, and it changes according to the condition or a disease. It also changes on the age of the patient.

Dosage Forms

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

Dosing: Adult

Dietary supplement:

Oral: 100 mg once or twice daily

Prevention of migraine headache (off-label use):

Oral: 400 mg once daily (Rahimdel 2015; Schoenen 1998)

Dosing: Geriatric

Refer to adult dosing.

Dosing: Pediatric

Dietary supplement: Infants, Children, and Adolescents: A multivitamin preparation is most commonly used for the provision of Vitamin B2 supplementation in pediatric patients; the use of a single-ingredient Vitamin B2 product as a daily supplement for the prevention of deficiency in pediatric patients is very rare. If single-ingredient Vitamin B2 supplement is necessary, consult product labeling for appropriateness of product in infants and young children in particular.

Migraine headache, prevention: Limited data available, efficacy results variable: Children ≥ 8 years and Adolescents:

Oral: 200 to 400 mg once daily; dosing based on a retrospective study of 41 patients (ages 8 to 18 years) who received 200 mg/day (n=21) or 400 mg/day (n=20) as prophylaxis for migraine and migraine-type headaches; results showed significant reduction in primary endpoint of frequency of headache attack; 68.4% of patients had a ≥50% decrease in headache frequency during treatment (Condò 2009). However, in a prospective, placebo-controlled study of 48 patients (ages 5 to 15 years), patients received 200 mg/day (n=27) or placebo (n=21) and in the treatment group (Vitamin B2) no benefit compared to placebo for migraine frequency or intensity was observed; a high placebo responder rate was also reported (MacLennan 2008).

What other drugs will affect Vitamin B2?

There may be other drugs that can interact with Vitamin B2. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.

Vitamin B2 interactions

Interactions are the effects that happen when the drug is taken along with the food or when taken with other medications. Suppose if you are taking a drug Vitamin B2, it may have interactions with specific foods and specific medications. It will not interact with all foods and medications. The interactions vary from drug to drug. You need to be aware of interactions of the medicine you take. Most medications may interact with alcohol, tobacco, so be cautious.

Interactions for Vitamin B2 (Vitamin B2)

Alcohol - impairs the intestinal absorption of riboflavi

Antidepressants (tricyclics or phenothiazines) - requirements for Vitamin B2 may be increased in patients receiving these medications

Probenecid - concurrent use decreases gastrointestinal absorption of Vitamin B2; requirements for Vitamin B2 may be increased in patients receiving probenecid.


  1. DailyMed. "ASCORBIC ACID; BIOTIN; CYANOCOBALAMIN; DEXPANTHENOL; ERGOCALCIFEROL; FOLIC ACID; NIACINAMIDE; PYRIDOXINE HYDROCHLORIDE; RIBOFLAVIN; THIAMINE HYDROCHLORIDE; VITAMIN A; VITAMIN E: DailyMed provides trustworthy information about marketed drugs in the United States. DailyMed is the official provider of FDA label information (package inserts).". (accessed September 17, 2018).
  2. FDA/SPL Indexing Data. "TLM2976OFR: The UNique Ingredient Identifier (UNII) is an alphanumeric substance identifier from the joint FDA/USP Substance Registration System (SRS).". (accessed September 17, 2018).
  3. MeSH. "Vitamin B Complex". (accessed September 17, 2018).


The results of a survey conducted on for Vitamin B2 are given in detail below. The results of the survey conducted are based on the impressions and views of the website users and consumers taking Vitamin B2. We implore you to kindly base your medical condition or therapeutic choices on the result or test conducted by a physician or licensed medical practitioners.

User reports

Consumer reported frequency of use

No survey data has been collected yet

2 consumers reported doses

What doses of Vitamin B2 drug you have used?
The drug can be in various doses. Most anti-diabetic, anti-hypertensive drugs, pain killers, or antibiotics are in different low and high doses and prescribed by the doctors depending on the severity and demand of the condition suffered by the patient. In our reports, website users used these doses of Vitamin B2 drug in following percentages. Very few drugs come in a fixed dose or a single dose. Common conditions, like fever, have almost the same doses, e.g., [acetaminophen, 500mg] of drug used by the patient, even though it is available in various doses.

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Information checked by Dr. Sachin Kumar, MD Pharmacology

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