What is Vitamin B2 (Riboflavin)

This week, in element 3 of my collection at the ins and outs of vitamins, we are able to observe the antioxidant, power-generating electricity station called diet B2.

What Does It Do?

Vitamin B2, also called riboflavin is the second of eight B nutrients. The word “flavin” comes from the Latin “flavus,” that means yellow. So, vitamin B2 receives its call from its shade. This may be visible when high supplementation takes place, as your urine turns into brilliant yellow because the extra riboflavin is excreted.

Vitamins, vitamin b, diet b2, b complicated vitamins, riboflavin while supporting to provide energy is one among its makes use of, riboflavin is also an antioxidant working to rid the body of free radicals. Riboflavin is likewise had to assist the frame exchange nutrition B6 and folate into usable bureaucracy. Other crucial capabilities encompass body growth and purple blood cell production.

Riboflavin takes the form of flavin adenine dinucleotide (FAD) or flavin mononucleotide (FMN) whilst it’s far energetic in the body’s strength pathways. When it converts into these two paperwork, it lets in oxygen-based totally energy manufacturing to arise by attaching to protein enzymes. Meanwhile, FMN and FAD attach to proteins they may often be known as flavoproteins. Flavoproteins may be discovered during the frame but are in particular primarily based where oxygen-based strength production is wanted, as an example the heart and skeletal muscle.

Among lots of FAD’s roles, one is to be a cofactor for an enzyme called methylenetetrahy-drofolate reductase (MTHFR). Being a cofactor approach FAD is needed to be the gift for the introduction of MTHFR. This is crucial due to the fact MTHFR is worried in the breakdown of homocysteine, and high ranges of homocysteine had been linked to a multiplied risk of heart disease.

Energy manufacturing and metabolic strategies in the body require using oxygen, but oxygen containing molecules may be incredibly reactive and can reason harm to many systems inside the body, including blood vessel linings and joint tissues. A small protein-like molecule referred to as glutathione facilitates to save you this harm. Glutathione needs to be continuously recycled, and nutrition B2 permits this to show up, as it’s far a cofactor for the enzyme glutathione reductase, which reduces the oxidized shape of glutathione returned to its reduced version.

Vitamin B2 in its FAD form is likewise utilized by an enzyme known as kynurenine mono-oxygenase to convert the amino acid tryptophan into nutrition B3, otherwise referred to as niacin.

Foods Rich in Vitamin B2

Vitamins, vitamin b, diet b2, b complicated nutrients, riboflavin majority of wholesome folks that eat a properly-balanced weight-reduction plan gets enough riboflavin. The great sources of riboflavin consist of brewer’s yeast, almonds, organ meats, entire wild rice, mushrooms, grains, wheat germ, eggs, broccoli, soybeans, milk, yogurt, Brussels sprouts, and spinach. Flours and cereals are regularly fortified with riboflavin.

Riboflavin is destroyed by mild, so food has to be stored away from mild to guard its riboflavin content material. While riboflavin isn’t always destroyed by heat, it can be lost in water while meals are boiled or soaked. Riboflavin is also fine absorbed while taken between food.

Synergistic Nutrients

Nutrients that may help with absorption of vitamin B2 are nutrients B1, B3, A, B5, B6, and B12, as well as biotin, cysteine, folate, chromium, copper, glutathione, phosphate, potassium, iron, magnesium, and zinc.


Riboflavin deficiency is pretty commonplace if dietary intake is lacking, as it is continuously excreted in the urine. It must be noted that riboflavin deficiency is continually accompanied by a deficiency of other nutrients.

Two sorts of riboflavin deficiencies exist:

Primary riboflavin deficiency: When the individual’s weight loss plan is terrible in nutrition B2

Secondary riboflavin deficiency: When there is some other motive for the deficiency. It can be a end result of situations that affect absorption within the intestines, the body no longer being able to use the diet, or an increase in the excretion of the nutrition.

Signs and symptoms of riboflavin deficiency:

  • Iron-deficiency anaemia
  • Angular cheilitis – cracks on the corners of the mouth
  • Dry skin, Inflammation of the lining of the mouth and tongue
  • Mouth ulcers, Cracked lips
  • Red lips, Sore throat
  • Eyes can be sensitive to brilliant light, they’ll also be itchy, watery and/or bloodshot

Side Effects

There is not any recognized toxicity to riboflavin. Because riboflavin is a water-soluble nutrition, excess quantities are effortlessly excreted by the frame within the urine. Possible reactions to very high doses might also encompass itching, numbness, burning or prickling sensations, and sensitivity to light.

Researched Uses

Vitamins, diet b, vitamin b2, b complicated nutrients, riboflavin preventing migraine complications: High doses of riboflavin, around four hundred mg/day, seem to reduce the variety of migraine headache assaults notably. The pain and length of a headache, even though, does now not seem to be stricken by supplementation.

Preventing cataracts: Vitamin B2, in conjunction with other nutrients, is critical for normal imaginative and prescient. According to early research findings, riboflavin may help prevent cataracts. In one double blind, placebo-managed examine, folks that took a niacin and riboflavin supplement had fewer cataracts than people who took other nutrients and vitamins. However, researchers do not know whether that was because of riboflavin, niacin, or the aggregate of the two. Continued research is wanted to evaluate if riboflavin can without a doubt assist in stopping cataracts.

Recommended Intake

It is usually recommended to get the subsequent amounts of vitamin B2 in keeping with the day:

  • Infants: 0.3mg up to six months and 0.4mg up to 7 months
  • Children: 0.5mg a day up to three years, 0.6mg a day up to eight years, and 0.9mg a day up to 13 years tofar

Adolescents and adults: 1.30mg an afternoon for adult males 14 and older, 1mg an afternoon for girls 14 years and older
Women who are pregnant or breastfeeding: Pregnant ladies will want 1.4mg and breastfeeding women will need extra, round 1.60mg an afternoon

Are there any threats related to an extreme amount of vitamin B2?

Excess riboflavin is excreted via the urine (frequently briefly causing urine to show a vibrant yellow color several hours after taking it), so there’s no not unusual danger for an overdose. However, extraordinarily high doses may also bring about an expanded risk of kidney stones. Sensitivity to mild, itching, numbness, and burning/prickling sensations may occur at excessive dosages. Allergy and anaphylaxis (intense, whole-frame hypersensitivity) have additionally been said, though rarely.


1. Osiecki, Henry , The Nutrient Bible 8th Edition, Bio Concepts Pub, Kelvin Grove QLD


2. Goodrich RP, et.al, Chapter 5:“The Antiviral and Antibacterial Properties of Riboflavin and Light: Applications to Blood Safety and Transfusion Medicine.