Major Functions: Coenzyme (TTP), Energy metabolism, synthesis of DNA, RNA, and NADPH, Nerve function

Deficiency: Beriberi

Toxicity: N/A

Food Sources: Pork, whole grains, legumes, tuna, soy milk

Major Functions: Coenzyme (FAD and FMN), energy metabolism, metabolism of folate, vitamin A, niacin, vitamin B6, and vitamin K, Nerotransmitter metabolism

Deficiency: Ariboflavinosis

Toxicity: N/A

Food Sources: Liver, Mushrooms, diary products, tomatoes, spinach

Major Functions: Coenzyme, energy metabolism, protein synthesis, glucose homeostasis, cholesterol metabolism, DNA repair

Deficiency: Pellagra

Toxicity: skin inflammation and flushing

Food Sources: Liver, fish, meat, tomatoes, mushrooms

Major Functions: coenzyme, energy metabolism, heme synthesis, cholesterol, fatty acid, steroid, and phospholipid synthesis

Deficiency: Burning feet syndrome

Toxicity: N/A

Food sources: Liver, mushrooms, sunflower seeds, yogurt, turkey