Difelikefalin acetatePharmaceutical InformationUpdated on Jun 11, 2019 View more like this | Visit SHIRLEY, NY | Contact Cathy Miller |

Difelikefalin ,also known as D-Phe-D-Phe-D-Leu-D-Lys-[γ-(4-N-piperidinyl)amino carboxylic acid] (as the acetate salt), is an analgesic opioid peptide acting as a peripherally specific, highly selective agonist of the κ-opioid receptor (KOR).