Organotherapy is a medical treatment that uses animal organ preparations to treat human illness. There are many synonyms that can be used for this term, including glandular therapy, endocrine therapy, and organ extract therapy. These terms all describe the same basic treatment method, but may highlight different aspects of the process. For example, glandular therapy focuses on the use of specific glands, while endocrine therapy describes the involvement of hormones. Organ extract therapy is more general, encompassing the use of any animal organ extracts. Regardless of the terminology used, the goal of organotherapy is to provide the body with the nutrients and hormones it needs to function optimally.