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Keywords:

  • Diabetic Peripheral Neuropathy;
  • Pain;
  • Analgesic;
  • Sustained-Release Oxycodone;
  • Opioid;
  • Adverse Reactions

Abstract

Objective.  To evaluate the efficacy and safety of sustained-release (SR) oxycodone tablets in the treatment of moderate to severe painful diabetic peripheral neuropathy (DPN).

Design.  This was a multicenter, randomized, open-labeled study.

Setting.  This study was completed in 12 hospitals in China.

Patients.  A total of 80 Chinese patients undergoing moderate to severe painful DPN.

Interventions.  An initial dose of 10 mg is recommended to be taken orally every 12 hours. Dose titration was done appropriately according to pain intensity and adverse reactions.

Outcome Measures.  Data record included days, dosage, analgesic efficacy, quality of sleep, adverse events, and combination therapy when patients were treated with SR oxycodone tablets. The continuous observation period was 6 weeks.

Results.  After medication for 1 week, pain was significantly (P < 0.01) relieved from 6.8 ± 1.4 to 2.8 ± 1.6. Onset time was within 45 minutes in nearly 60% of the patients, and within 1 hour in nearly 95% of that ones. More than 90% of the patients achieved stable analgesic dose within 3 days. After using SR oxycodone tablets for 1 week, sleep quality was significantly (P < 0.01) improved. In week 1, the average dose of SR oxycodone tablets was 16.63 ± 7.79 mg. The average daily dose of most patients was about 20 mg after 2 weeks. In all the enrolled patients, 38 (47.5%) had adverse reactions. No serious adverse reactions took place.

Conclusion.  The results of this clinical observation further elaborated the efficacy and safety of SR oxycodone tablets in the treatment of moderate to severe painful diabetic peripheral neuropathy in China.