What are the benefits and side effects of GnRH agonists/antagonists?

GnRH analogues can reduce estrogen levels and, for some patients, provide meaningful short-term relief of endometriosis-related pain. They may be used to help quiet symptoms for a limited period or as a temporary bridge while longer-term plans are being made.

The tradeoff is that lowering estrogen can also trigger menopause-like side effects such as hot flashes, mood and sleep changes, vaginal dryness, and decreased libido, and it can contribute to bone density loss—so treatment is typically time-limited and monitored carefully. Some patients find the side effects outweigh the benefit, and concerns about longer-lasting impacts (including persistent symptoms after stopping) are important to discuss in the context of your health history and goals. If you’re considering GnRH analogues, our team can help you weigh whether they fit into your overall plan and discuss alternatives, including definitive surgical options when appropriate.