Vitamin B2

What is Vitamin B2?

Vitamin B2, also known as riboflavin, is an essential water-soluble vitamin that plays a crucial role in maintaining overall health. It is part of the B-complex group of vitamins and is involved in numerous metabolic processes in the body. Because it is a water-soluble vitamin that cannot be stored in the body, it needs to be replenished regularly through diet.

In this article, we will explore Riboflavin’s role in the body, daily requirements, dietary sources, deficiency-related diseases, supplementation, and the risk of overdose.

Role in the Body

B2 Vitamin serves as a coenzyme:

-helping enzymes carry out their functions effectively

-energy production by assisting in the conversion of carbohydrates, fats, and proteins into usable energy

-synthesis of red blood cells

-maintaining healthy skin, healthy eyes, and a healthy nervous system

– production of hormones

Daily Requirement

The recommended daily intake of vitamin B2 varies based on age, sex, and certain conditions. For adult men and women, the recommended dietary allowance (RDA) is approximately 1.3 mg per day. However, during pregnancy and lactation, the requirement increases to 1.4 mg and 1.6 mg, respectively. Infants, children, and adolescents have different RDAs, ranging from 0.3 mg to 1.3 mg, depending on their age.

Sources of Vitamin B2

Vitamin B2 can be obtained from a variety of dietary sources. Good food sources of riboflavin include dairy products, such as milk, cheese, and yogurt, eggs, lean meats, poultry, fish, green leafy vegetables, legumes, nuts, and whole grains. However, some of the vitamin B2 content may be lost during cooking or processing, so it is advisable to consume these foods in their raw or lightly cooked form to maximize the vitamin’s availability.

Deficiency-Related Diseases

Deficiency of riboflavin can lead to a condition known as riboflavin deficiency or ariboflavinosis. Common symptoms of deficiency include cracks and sores around the corners of the mouth, a swollen and sore tongue, dermatitis, eye redness and sensitivity to light, and fatigue. Prolonged deficiency can result in more severe complications, including anemia, nerve damage, and impaired growth and development in children.


Certain populations may be more prone to vitamin B2 deficiency. These include individuals with poor dietary habits, alcoholics, people with malabsorption disorders, and those with certain chronic diseases. Additionally, strict vegetarians or vegans who do not consume dairy products or eggs may have a higher risk of deficiency, as these are some of the richest food sources of vitamin B2.

Risks of Overdose

While vitamin B2 is generally safe, an overdose is unlikely to occur through dietary sources alone. Since it is water-soluble, excess amounts of the vitamin are excreted through urine. However, extremely high doses of riboflavin supplements may cause harmless discoloration of urine, turning it bright yellow. This discoloration is harmless and not a cause for concern.

Bottom Line

In conclusion, vitamin B2 is an essential nutrient that plays a crucial role in maintaining overall health. It is necessary for energy production, healthy skin, eyes, and nervous system. Adequate amounts of riboflavin can be obtained through a balanced diet that includes sources like dairy products, eggs, meats, whole grains, and vegetables. Deficiency can lead to Ariboflavinosis and other associated symptoms. In certain cases, supplementation may be required, but it is important to consult with a healthcare professional. Vitamin B2 is generally safe, and the risk of overdose is low when consumed through dietary sources, but high doses of supplements should be avoided without medical supervision.


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