Goserelin

How it works

A 1 mm implant that floods the pituitary's GnRH receptors until they go deaf, so sex hormones fall. For prostate and breast cancer.

What it's made of

10 amino acids: GnRH with a bulky D-serine at position 6 and a changed end (azaglycine). It activates the receptor more strongly and for longer than the natural hormone.

What it's for

Prescribed for

Prostate cancer, advanced breast cancer before menopause, endometriosis, and thinning the endometrium before an ablation.