Current understanding on pharmacokinetics, clinical efficacy and safety of progestins for treating pain associated to endometriosis. Posted on 4 April 20187 February 2020 by admin Barra F, Scala C, Ferrero S. Current understanding on pharmacokinetics, clinical efficacy and safety of progestins for treating pain associated to endometriosis. Expert Opin Drug Metab Toxicol 2018;14:399-415.https://www.tandfonline.com/doi/abs/10.1080/17425255.2018.1461840?journalCode=iemt20Â