General and Systematic Veterinary Pharmacology

ANIMAL SOURCE OF DRUGS

• The body fluids or glands of animals are also natural drug sources. The drugs obtained from animal sources include:
  • hormones, such as insulin
  • oils and fats (usually fixed), such as cod-liver oil
  • enzymes, which are produced by living cells and act as catalysts, such as pancreatin and pepsin
  • vaccines, which include suspensions of killed, modified, or attenuated microorganisms, or antigenic materials obtained from these.