Bio Case V Pro is an extra potent pancreatic enzyme concentrate made from whole porcine pancreas to give dogs the enzymes necessary for proper food digestion. Bio Case V Pro includes Vitamin B12 with Intrinsic factor. Intrinsic factor is a protein that binds to Vitamin B12, to allow its absorption preventing deficiency often common to pets with this condition. Probiotics have also been added to promote a healthy, stable bacteria level in the digestive tract. Made in USA.