Treatment of prostate cancer suitable for hormonal manipulation. Breast cancer in pre-menopausal women suitable for hormone manipulation.Endometriosis. Assisted reproduction: pituitary down regulation in preparion for superovulation. Endometrial thinning: Zoladex is indicated for the prethinning of the utetine endometrium prior ro endometrial ablation or resection. Uterine Fibroids: For reduction of fibroid size prior to surgery.