What is the difference between endogenous and exogenous hormones?

Endogenous hormones are those that are naturally produced within the body, generated by various glands that are part of the endocrine system. These hormones play essential roles in regulating physiological processes such as metabolism, growth, and mood. On the other hand, exogenous hormones refer to those that are introduced into the body from external sources, often through medications or treatments. These can be synthetic and used for therapeutic purposes or can also be derived from biological sources.

Understanding the distinction between these two types of hormones is crucial in veterinary pharmacology, as it influences how various hormonal treatments are administered and their expected effects in the body. For instance, during hormone replacement therapy, exogenous hormones may be used to supplement or mimic the action of endogenous hormones that are deficient or absent.