How deficiency of riboflavin affects other vitamins especially vitamin B
A deficiency of riboflavin is rarely seen alone. It usually occurs in conjugation with deficiencies of other B vitamins. One reason is that the food sources of B vitamins are similar. Therefore, a deficiency of riboflavin due to a poor diet will likely lead to multiple vitamin deficiencies. Because riboflavin is needed to convert other vitamins (pyridoxine and folic acid) into their active forms, some of the symptoms seen with riboflavin deficiency are actually due to deficiencies in these other nutrients.