Ellis , K.E., K.A. Von Dollen, K. Mirandi, T.M. Beachler, C.S. Bailey, J.L. Davis, and S.K. Lyle. “Pharmacokinetics of Intra-Rectal Altrenogest Administration in Horses ”. Clinical Theriogenology 10, no. 3 (September 1, 2018): 313. Accessed March 29, 2026. https://clinicaltheriogenology.net/index.php/CT/article/view/10015.