Pharmacokinetic Study of Hydrocodone/APAP in Chronic Pain Patients

Summary

Objective is to evaluate the pharmacokinetics profile of hydrocodone's metabolite hydromorphone in patients who are taking hydrocodone on a routine basis for more than 3 months for chronic pain and correlate hydromorphone levels to their hydrocodone usage.

Timeline

Start

2012-02

Primary completion

2012-05

Completion

2012-09

Publications

• Background Wu Y. [Studies on the analysis of hydrocodone and its metabolite in human urine by GC/MS]. Yao Xue Xue Bao. 1997 Apr;32(4):305-9. Chinese.
• Background Chen YL, Hanson GD, Jiang X, Naidong W. Simultaneous determination of hydrocodone and hydromorphone in human plasma by liquid chromatography with tandem mass spectrometric detection. J Chromatogr B Analyt Technol Biomed Life Sci. 2002 Mar 25;769(1):55-64. doi: 10.1016/s1570-0232(01)00616-x.
• Background Menelaou A, Hutchinson MR, Quinn I, Christensen A, Somogyi AA. Quantification of the O- and N-demethylated metabolites of hydrocodone and oxycodone in human liver microsomes using liquid chromatography with ultraviolet absorbance detection. J Chromatogr B Analyt Technol Biomed Life Sci. 2003 Feb 25;785(1):81-8. doi: 10.1016/s1570-0232(02)00856-5.
• Background Hutchinson MR, Menelaou A, Foster DJ, Coller JK, Somogyi AA. CYP2D6 and CYP3A4 involvement in the primary oxidative metabolism of hydrocodone by human liver microsomes. Br J Clin Pharmacol. 2004 Mar;57(3):287-97. doi: 10.1046/j.1365-2125.2003.02002.x.
• Background Cone EJ, Darwin WD, Gorodetzky CW. Comparative metabolism of codeine in man, rat, dog, guinea-pig and rabbit: identification of four new metabolites. J Pharm Pharmacol. 1979 May;31(5):314-7. doi: 10.1111/j.2042-7158.1979.tb13507.x.
• Background Otton SV, Schadel M, Cheung SW, Kaplan HL, Busto UE, Sellers EM. CYP2D6 phenotype determines the metabolic conversion of hydrocodone to hydromorphone. Clin Pharmacol Ther. 1993 Nov;54(5):463-72. doi: 10.1038/clpt.1993.177.

Drugs

Indications