-Tamoxifen is a hormone therapy drug. It works by blocking the hormone estrogen from accelerating the growth of specifically breast cancers. It is not a chemotherapy drug, these work by attacking the process of cell division, and attack all rapidly dividing tissues such as hair.

-Actually according to the Nursing Drug Reference book (Mosby's) used by the nursing industry, Lupron IS considered an antineoplastic hormone, used for treatment of endo and also for metastatic prostate cancer as it reduces the testosterone levels to "castrate" level. It is a type of chemo drug, as it is used in the same fashion for treating cancer as the other antineoplastics are. Antineoplastics are defined as: ...are divided into alkylating agents, antimetabolites, antibiotic agents, hormonal agents, and miscellaneous agents. Their uses are: ...vary widely among products and classes of drugs. They are used to treat leukemia, Hodgkin's disease, lymphomas, and other tumors throughout the body. The generic names in the hormonal agents list are: aminoglutethimide, estramustine, flutamide, goserelin acetate, leuprolide (this is Lupron), megestrol, mitotane, tamoxifen, testolactone, and trilostane...... These are all chemo drugs