期刊
PLOS ONE
卷 2, 期 12, 页码 -出版社
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0001305
关键词
-
资金
- Roche
- Novartis
The threat of potential pandemic influenza requires a reevaluation of licensed therapies for the prophylaxis or treatment of avian H5N1 infection that may adapt to man. Among the therapies considered for use in pandemic influenza is the co-administration of ion channel and neuraminidase inhibitors, both to potentially increase efficacy as well as to decrease the emergence of resistant isolates. To better understand the potential for drug interactions, a cross-over, randomized, open-label trial was conducted with amantadine, 100 mg po bid, and oseltamivir, 75 mg po bid, given alone or in combination for 5 days. Each subject (N = 17) served as their own control and was administered each drug alone or in combination, with appropriate wash-out. Co-administration with oseltamivir had no clinically significant effect on the pharmacokinetics (PK) of amantadine [mean ratios (90% CI) for AUC(0-12) 0.93 (0.89, 0.98) and C(max) 0.96 (0.90, 1.02). Similarly, amantadine co-administration did not affect oseltamivir PK [AUC(0-12) 0.92 (0.86, 0.99) and C(max) 0.85 (0.73, 0.99)] or the PK of the metabolite, oseltamivir carboxylate [AUC(0-12) 0.98 (0.95, 1.02) and C(max) 0.95 (0.89, 1.01)]. In this small trial there was no evidence of an increase in adverse events. Although many more subjects would need to be studied to rule out a synergistic increase in adverse events, the combination in this small human drug-drug interaction trial appears safe and without pharmacokinetic consequences. Trial Registration. ClinicalTrials.gov NCT00416962
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