Testolactone

Testolactone was a medication used to treat certain types of breast cancer. However, it's important to note that it's no longer available for medical use as of 2008. Here's what you should know about it:

• Historical Use: It was primarily used for treating advanced breast cancer in postmenopausal women or women whose ovaries no longer functioned.
• Mechanism of Action: Testolactone worked by blocking the production of estrogens in the body. Some breast cancers are fueled by estrogen, so reducing its production could help slow or prevent tumor growth.

Replacement for Testolactone: More effective medications have replaced testolactone for treating breast cancer. These newer drugs offer improved effectiveness and potentially fewer side effects.

Here's some additional information to consider:

• Testolactone was a non-selective and irreversible aromatase inhibitor. This means it broadly blocked the enzymes responsible for estrogen production and did so permanently.
• It was available in pill form (oral) and by injection (intramuscular).