What are the symptoms of riboflavin toxicity?

Vitamin B2 doesn’t pose any health risk in the amounts that are present in your diet. However, the high therapeutic dosages of vitamin B2 can rarely cause toxicity symptoms. The symptoms of riboflavin toxicity include numbing or itching sensations, sun-induced eye damage, and orange colored urine. It is highly unlikely for anyone to suffer from riboflavin toxicity.

This is rare scenario since you may to eat a lot of it to face such things.

Even I have never heard of any such thing