title: Clinical evaluation of the first oxycodone once daily prolonged release tablet in moderate to severe chronic pain: a randomized, double-blind, multicenter, cross-over, non-inferiority study to investigate efficacy and safety in comparison with an established oxycodone twice daily prolonged release tablet.
abstract: OBJECTIVE
  The first oxycodone once daily (OOD) has been developed and after successful pharmacokinetic characterization, therapeutic efficacy and safety were compared to an established oxycodone twice daily (OTD: Oxygesic/OxyContin, Mundipharma).
  
  
  METHODS
  A randomized, double-blind, multicenter, cross-over, non-inferiority study was conducted in patients (n = 68) with chronic malignant or non-malignant pain. The new OOD was compared to OTD at identical total daily doses (TDD: 40-120 mg/day) employing intensive, five times daily current pain (0-100 mm visual analog scale, VAS) and twice daily 12 h recalled pain assessments as well as safety parameters such as nausea and sedation (VAS) over 5 days for each treatment (after a 5 day run-in phase).
  
  
  RESULTS
  There was no significant difference in analgesic potency detected between the two treatments based on 95% CI for difference in the daily mean current pain (-2.09 mm VAS) over 5 days, determined as -5.09 to 0.91 mm VAS. A difference ≤12 mm VAS indicated non-inferiority of OOD, i.e. lack of clinically relevant difference in analgesia. Intake of rescue medication had no effect on study results as evaluated by ANCOVA. The difference in adverse events (AEs) between the two treatments did not reach significance, as 19.1% and 23.5% of patients experienced treatment-related AEs while on OOD and OTD, respectively. Advantages for OOD regarding consistency of analgesia (i.e. use of rescue medication, current and recalled pain) and sedation did not reach statistical significance in this limited study population.
  
  
  CONCLUSIONS
  Despite the small number of patients and short study duration, the results support the conclusion that new OOD is (at least) equivalent to established OTD regarding safety and efficacy.
authors: Klinik für Schmerz- und Palliativmedizin, Klinikum St.-Marienhospital GmbH , Lünen , Germany.
authors: Eberhard Albert
authors: EA
authors: Lux
authors: Marcin
authors: M
authors: Janecki
authors: Martina Alice
authors: MA
authors: Maritz
mesh_terms: D000328:Adult; D000368:Aged; D000701:Analgesics, Opioid / Q000008:administration & dosage*; D059350:Chronic Pain / Q000188:drug therapy*; D018592:Cross-Over Studies; D003692:Delayed-Action Preparations; D004311:Double-Blind Method; D004334:Drug Administration Schedule; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010098:Oxycodone / Q000008:administration & dosage*; D010147:Pain Measurement; D011446:Prospective Studies; D013607:Tablets; D016896:Treatment Outcome
chemical_list: D000701:Analgesics, Opioid; D003692:Delayed-Action Preparations; D013607:Tablets; D010098:Oxycodone
keywords: Chronic pain; New once daily prolonged release tablet formulation; Oxycodone