Oats, milk, yogurt, and beef liver arranged as dietary sources of vitamin B2.

7 Vitamin B2 Deficiency Symptoms, According to Experts

Prevention · February 16, 2026

Riboflavin deficiency is uncommon in the United States, but risk rises when intake or absorption is limited. I contributed guidance on food sources, possible supplement side effects, and why symptoms should be evaluated rather than self-diagnosed from a checklist.