Oxymorphone Peer Reviewed Journal

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A Phase I study of the pharmacokinetics, safety and tolerability of a novel tocopheryl phosphate mixture/oxymorphone transdermal patch system

Aim: Characterize the pharmacokinetic profile and tolerability of two tocopheryl phosphate mixture/oxymorphone patch formulations in healthy subjects, and the active metabolite (6-OH-oxymorphone). Materials & methods: Fifteen participants received a single application of oxymorphone patches +/− capsaicin for 72 h and were crossed-over for another 72 h. Results:Plasma oxymorphone was detected approximately 7 h and 6-OH-oxymorphone after approximately 18–19 h postapplication of both formulations, respectively. For oxymorphone, median t_max was 24 h, and C_max/C_min ratio was approximately 2.4. The most frequently reported treatment-related adverse event was application site reaction, mainly with capsaicin formulation. Conclusion:Tocopheryl phosphate mixture/oxymorphone transdermal patches can successfully deliver therapeutic amounts of oxymorphone in a sustained manner over 72 h and are well tolerated.

https://www.futuremedicine.com/doi/full/10.2217/pmt-2017-0032