Riboflavin (Vitamin B2), MTHFR, and Deficiency Symptoms Genetic Lifehacks Still tired even after sleeping? Cracks at the corner of your mouth? Your body might be screaming for Vitamin B2 Most people ignore this until the signs get obvious. Vitamin 10.4: Riboflavin Medicine LibreTexts Full article: Riboflavin and health: A review of recent human research Addressing optimal folate and related B vitamin status through the lifecycle: health impacts and challenges Proceedings of the Nutrition Society Cambridge Core Riboflavin aka B2 is the second of the 8 B vitamins Riboflavin is found naturally in many foods Best sources milk and milk products Great sources enriched flour products,