Triptorelin acetate (TA) is a GnRH agonist that was earlier used as a veterinary drug for a single fixed-time artificial insemination through the synchronised estrous cycle of weaned sows. The risk assessment was that the Food Safety Commission of Japan (FSCJ) concluded that TA is not likely to cause adverse effects on human health through dietary exposure. Because TA does not have genotoxicity relevant to human health and is degraded in the digestive tract, its oral bioavailability is low. TA is currently used for the treatment of central precocious puberty and assisted reproduction. Injectable TA alone or in combination with levonorgestrel intrauterine device is also used to treat endometrial atypical hyperplasia (EAH) . Combination therapy is more effective, improving patients' menstrual abnormalities, endometrial thickening and quality of life, and is safe.
