title: Palonosetron HCl compatibility and stability with doxorubicin HCl and epirubicin HCl during simulated Y-site administration.
abstract: BACKGROUND
  Palonosetron HCl is a selective 5-HT3 receptor antagonist used for the prevention of chemotherapy-induced nausea and vomiting. Palonosetron HCl may be administered with other drugs by Y-site administration, including doxorubicin HCI and epirubicin HCI. Consequently, stability and compatability information are needed to verify the acceptability of such Y-site administration.
  
  
  OBJECTIVE
  To evaluate the physical and chemical stability of undiluted palonosetron HCl 50 microg/mL with doxorubicin HCl 1 mg/mL and epirubicin HCl 0.5 mg/mL during simulated Y-site administration.
  
  
  METHODS
  Triplicate samples of palonosetron HCl with each of the anthracycline chemotherapy drugs were tested. Samples were stored and evaluated for up to 4 hours at room temperature near 23 degrees C. Physical stability was assessed using turbidimetric and particulate measurement, as well as visual inspection. Chemical stability was assessed by HPLC.
  
  
  RESULTS
  All of the admixtures were clear and red-orange when viewed in normal fluorescent room light and with a Tyndall beam. Measured turbidity and particulate content were low initially and remained low throughout the study. The drug concentration was unchanged in any of the samples throughout the study.
  
  
  CONCLUSIONS
  Palonosetron HCl is physically and chemically stable with doxorubicin HCl and epirubicin HCl during simulated Y-site administration of these drugs over 4 hours at ambient room temperature.
authors.affiliation: Clinical Pharmaceutics Research, The University of Texas, MD Anderson Cancer Center, Houston, TX 77030-4095, USA.
authors.forename: Lawrence A
authors.initials: LA
authors.lastname: Trissel
authors.forename: Yanping
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D004347:Drug Interactions; D004355:Drug Stability; D015251:Epirubicin / Q000008:administration & dosage / Q000737:chemistry* / Q000493:pharmacokinetics*; D007546:Isoquinolines / Q000008:administration & dosage / Q000737:chemistry* / Q000493:pharmacokinetics*; D009391:Nephelometry and Turbidimetry / Q000379:methods; D000077924:Palonosetron; D011812:Quinuclidines / Q000008:administration & dosage / Q000737:chemistry* / Q000493:pharmacokinetics*
chemical_list: D007546:Isoquinolines; D011812:Quinuclidines; D015251:Epirubicin; D000077924:Palonosetron