Vitamin B2 (Riboflavin)
It is important in the processes involved in energy production. It plays a important role in thyroid hormone metabolism. Its deficiency inhibits red blood cell production, and reduces the bodies’ ability to produce antibodies. It is found in the pigment of the retina (part of eye), thus enabling the eye to adapt to light. Thus the deficiency can manifest themselves as photo

phobia, an excessive sensitivity to light that causes the eye to water and become inflamed and bloodshot.
Substances like antibiotic, oral contraceptives, alcohol, and other medication that deplete or interfere with the absorption or utilization of B2.

Food Source
High: yogurt, and eggs; meat, especially kidney and liver, poultry, and fish; beans; and spinach. Other good sources are avocados, currants, asparagus, broccoli, brussels sprouts, and nuts.
No known toxicity.