It is indicated to regularize estrus in the post-winter transition stage, when it is present at the ovarian level, a follicle of 15 to 20mm, detectable by palpation or ultrasound. It is also indicated as a synchronizer of estrus in cyclic mares and as an enhancer of uterine tone and as a preservative of gestation in mares with suspected primary and / or secondary luteal insufficiency. Composition: Altrenogest 2%. Therapeutic action: synthetic progesterone for seas. Use: Horses Presentation: Bottles of 1000 ml.