Ariboflavinosis or vitamin B2 deficiency: what are its consequences?

We are going to show you the symptoms and problems caused by vitamin B2 deficiency in the guideline. This is a nutrient present in foods of animal origin.

Last update: 09 October, 2022

Ariboflavinosis or vitamin B2 deficiency is a rare problem, but it can significantly condition the state of health. Symptoms are related to sore throat, being able to generate lesions in the lips and in the oral mucosa. There is also the possibility of experiencing seborrheic dermatitis and even anemia.

In the context of a varied diet, it is difficult to develop a pathology of this type, since most foods of animal origin contain vitamin B2. In fact, it is a nutrient that is not usually supplemented, unless multivitamins are consumed.

Why does ariboflavinosis occur?

Vitamin B2 deficiency It is experienced when the intake of cereals, dairy or animal products becomes insufficient. Although it is possible that a situation of diarrhea causes losses of the nutrient, which reduces its levels in the body.

Even the consumption of alcohol in large quantities and chronically could be one of the main risk factors. After all, the substance works as a diuretic, which could lead to the loss of the vitamin in the urine.


In general, the symptoms They usually appear quickly and present with paleness and maceration of the mucous membranes in the corners of the mouth. It is possible that in this context a candida infection develops, also causing alterations in the surface of the tongue.

The dryness of the lips favors the settlement of fungal infections, such as candidiasis.


To confirm the problem, what is usually measured is the urinary excretion of riboflavin. In this way, the pathology can be diagnosed.

Then it will be necessary to guide the consumption of supplements or the administration of the nutrient intramuscularly in the most serious cases. It usually resolves with 5 or 10 milligrams of the vitamin orally, once a day.

What is the function of riboflavin?

It is important to understand that riboflavin has several functions within the body. Participates in many different physiological reactions.

In fact, generates an antioxidant and anti-inflammatory effect that can help prevent premature aging and the genesis of chronic and complex pathologies. This is evidenced by research published in the journal International Journal of Molecular Sciences.

However, as with most water-soluble vitamins, there are no deposits of it in the body. It is necessary to guarantee its daily consumption in sufficient quantities.

However, this is not usually a problem, as long as a varied diet is considered. In the case of vegan guidelines, it is not a frequent deficit either. Yes, there is usually an inadequate intake of vitamin B12 associated with vegetarianism, as confirmed by a study published in American Family Physician.

What are the foods with the highest content of vitamin B2?

Dairy products are one of the main sources of riboflavin. But also eggs, walnuts, veal liver, pork loin and beef.

All of them are considered high nutritional density foods. They have many vitamins and minerals and high quality protein. Among the fruits and vegetables, spinach, peas, mushrooms and mushrooms should be highlighted.

Now, it must be emphasized that B2 needs may vary throughout life. While babies typically require around half a milligram per day, adults exceed the 1 gram daily requirement.

Dairy products are an excellent source of B vitamins.

Ariboflavinosis is a rare problem

Ariboflavinosis is a rare problem, caused by an insufficient supply of vitamin B2. This nutrient performs several functions within the body, also participating in energy metabolism and in the communication of the central nervous system.

Keep in mind that nutritional needs must always be completed through food.. At some point, supplements can be included to satisfy a greater contribution, but it is not ideal. It will always be necessary to guarantee that products from different groups are consumed in order to cover the recommended daily amounts of vitamins and minerals.

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