Aim: To characterize the pharmacokinetic profile and evaluate the safety and tolerability of a transdermal oxycodone patch containing tocopheryl phosphate mixture (TPM).
Patients & methods: Eleven healthy subjects received a single application of three TPM/oxycodone patches applied to the torso for 72 h.
Results: Oxycodone was detected 8.0 ± 2.7-h postpatch administration, reaching a mean maximum plasma concentration of 3.41 ± 1.34 ng/ml at 49.3 ± 21.2 h. The safety profile was consistent with the application method and known side-effect profile of oxycodone and naltrexone. No treatment-limiting skin irritation was observed.
Conclusion: A 3-day application of the TPM/oxycodone patch demonstrated an acceptable safety profile and was well tolerated by healthy subjects, with limited dermal irritation following application.
Keywords: oxycodone; tocopheryl phosphate mixture (TPM); transdermal patch.