Generic Name: triptorelin

Pronunciation: N/A

Abbreviation: N/A

Other Market Name: N/A

Drug Class: Hormone Therapy Medications

Company: Allergan

Approval Status: Approved

Generic Version Available: No

Experimental Code: N/A

Drug Indication

Trelstar is a GnRH agonist approved for palliative treatment of advanced prostate cancer.

General Info

Testosterone and other male hormones (androgens) stimulate prostate cancer growth. Gonadotropin-releasing hormone (GnRH) agonists, also known as luteinizing hormone-releasing hormone (LHRH) agonists, block signals in the brain that direct the testicles to produce testosterone. Testosterone levels go up briefly (known as a flare) before falling to very low levels.


Dosing Info: Trelstar is given as a long-acting intramuscular injection that lasts from one to six months, depending on the dose.

Side Effects

Common side effects include hot flashes, bone pain, headache and swelling. Medications that lower testosterone may lead to reduced sexual desire, erectile dysfunction and shrinkage of the testicles. Potential serious side effects include increased risk of diabetes and cardiovascular disease.

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Last Reviewed: September 19, 2018