Bile is also used as a source of biochemicals for production of cortisone by the pharmaceutical industry. Heparin is utilized as a therapeutic anticoagulant and is extracted from bovine lungs or intestinal mucosa. Pharmaceutical industry representatives confirm that blood fractions I, II, III, IV and V are utilized in the production of an anti-rejection product. Heparin continues to be an ingredient in anticoagulants. Bovine fetal serum and trypsin are utilized in the manufacture of vaccines.
Pharmaceutical companies produce animal-source and human insulin.
They specify the use of porcine and bovine pancreas tissue as a source of insulin. Human insulin is made either by recombinant technique or via chemically altering pork insulin to human insulin. Porcine sourced insulin would provide the majority of animal based product. Nonetheless, the use of bovine insulin continues. Apparently some people experience allergic reactions to the recombinant form of insulin which likely assures the continued use of animal-based product.