Drug-Drug Interactions Between Raltegravir and Pravastatin in Healthy Volunteers

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Background: To evaluate the potential drug-drug interaction between raltegravir and pravastatin. Methods: This was an open-label, randomized, 3-period, cross-over, single-centre trial in 24 healthy volunteers. Subjects received the following treatments: pravastatin 40 mg every day for 4 days, raltegravir 400 mg twice a day for 4 days, and pravastatin 40 mg every day + raltegravir 400 mg twice a day for 4 days. The treatments were separated by washout periods of 10 days. On day 4 of each treatment period, blood samples for pharmacokinetics were collected throughout a 24-hour period. Results: Geometric mean ratios (90% confidence interval) for pravastatin + raltegravir versus pravastatin alone were 0.96 (0.83 to 1.11) for AUC(0-24) and 1.04 (0.85 to 1.26) for C-max. The mean low-density lipoprotein cholesterol decrease after 4 days of pravastatin was 0.42 mmol/L both in the presence and the absence of raltegravir. The geometric mean ratio (90% confidence interval) AUC(0-12), C-max, and C-12 for raltegravir + pravastatin versus raltegravir alone were 1.13 (0.77 to 1.65), 1.31 (0.81 to 2.13), and 0.59 (0.39 to 0.88), respectively. Conclusions: Raltegravir did not influence the pharmacokinetics or the short-term lipid-lowering effects of pravastatin, whereas pravastatin increased the C-max but decreased the C-12 of raltegravir. The effects of pravastatin on raltegravir pharmacokinetics are not likely to be clinically relevant.
Original languageUnknown
Pages (from-to)82-86
JournalJaids-Journal Of Acquired Immune Deficiency Syndromes
Issue number1
Publication statusPublished - 1 Jan 2010

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