What side effects does riboflavin (vitamin B2) cause?

Riboflavin is generally safe to use. Most people can take riboflavin without having side effects. A common and mild side effect is yellow discoloration to urine. If you take a particularly high dose, you could feel itchy, burned or numb. Call your healthcare professional if you are concerned about your reaction to taking riboflavin.

Continue Learning about Vitamins



In the United States, the Food and Drug Administration (FDA) regulates vitamin supplements and provides recommended daily amount information. The FDA says that we should pay attention when considering vitamin supplements, because ...

frequently many different vitamins and minerals are combined into one product.

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.