Is also called vitamin H and Biotin

Is a water soluable vitamin

Chemical structure includes: a ureido ring, a tetrahydrothiophene ring and a valeric acid substitute

Sources:

   -    Yeast
   -    Royal jelly
   -    Liver
   -    Some fish
   -    Eggs
   -    Cow’s milk
   -    Goat’s milk
   -    Soybeans
   -    Tomatoes
   -    Roamine lettuce
   -    Other vegetables
   -    Some nuts
   -    others

Function:

   -    A key component of cellular growth
   -    Helps in production of fatty acids
   -    Necessary for some fat metabolism
   -    Helps with amino acids
   -    A key component of the Citric Acid Cycle
   -    Carbon dioxide

Deficiencies

   -    very rare
   -    rather mild
   -    change in appetite
   -    change in growth

Toxicity is very unlikely