Hormone
testolactone
Effect:
Testicular Endocrine Activity Alteration
May Treat:
Breast Neoplasms
Definitions related to testolactone:
  • A progesterone derivative with antineoplastic activity. Testolactone inhibits steroid aromatase, thereby preventing the formation of estrogen from adrenal androstenedione and reducing endogenous estrogen levels. (NCI04)
    NCI
    U.S. National Cancer Institute, 2021
  • An antineoplastic agent that is a derivative of progesterone and used to treat advanced breast cancer.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
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