商品名：Progesterone*
Binds to specific cytoplasmic receptors, which then enter the nucleus and alter the transcription of DNA leading to alterations in cellular metabolism.
Threatened or habitual abortion, induction of parturition and postponement of oestrus. Doses of 2 mg/kg i.m. q48h will maintain plasma progesterone values >2 ng/ml, the level required to maintain pregnancy. Parturition can be expected 72 hours after the last injection. Parturition should be planned for day 57 after the onset of cytological dioestrus in the bitch or 64 days after mating in the queen. Other medications are authorized for the postponement of oestrus.
劑量數字暫停提供：VetPro 的劑量改依 DRUGAPI 藥物資料庫對外的內容，DRUGAPI 目前不提供可直接計算的劑量。下方列出 DRUGAPI 的審查結論與劑量審查引用的來源；計算機可手動輸入劑量換算。
本藥是長效處方注射懸液；劑量、發情週期時點、療程、物種與供應狀態依具名產品及法域而異。core 的保胎／催產肌肉注射舊內容與現行產品皮下途徑及妊娠限制衝突；未完成產品與法域配對前，計算器與飼主自行施打全部封鎖。
DRUGAPI 劑量審查引用的獸醫官方標示（各標示只適用於其產品、物種與法域，不可互換）
依出現頻率分組；嚴重副作用獨立列出，臨床上需立即辨識。