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Pharmacokinetics and tolerability of lefamulin following intravenous and oral dosing.


ABSTRACT: OBJECTIVES:To explore the pharmacokinetics (PK) of oral and intravenous (iv) lefamulin after single and multiple doses, and the effect of food on bioavailability. METHODS:Lefamulin PK was examined in four studies. In Study 1, PK was assessed in patients with acute bacterial skin and skin structure infections who received repeated iv lefamulin q12h (150?mg). In Study 2, a four-period crossover study, healthy subjects received a single dose of oral lefamulin [immediate-release (IR) tablet, 1?×?600?mg] in a fasted and fed state, oral lefamulin (capsule, 3?×?200?mg) in a fasted state, and iv lefamulin in a fasted state. In Study 3, a three-period crossover study, healthy males received a single oral lefamulin dose (IR) in the following states: fasted, fasted followed by a high-calorie meal 1?h post-dose, and fed. Study 4 had two parts; in part A, healthy males received a single lefamulin dose (IR) in a fasted and fed state; in part B, subjects received repeated doses of lefamulin (IR, q12h) or placebo. Adverse events (AEs) were recorded in each study. RESULTS:Single and repeated dosing of iv and oral lefamulin resulted in comparable exposure. Intravenous and oral lefamulin (given fasted or with a meal 1?h post-dose) resulted in bioequivalence. Bioequivalence was not established between oral lefamulin in the fed state and iv or oral administration in the fasted state. All AEs were mild or moderate in severity, no serious AEs were reported, and no participant discontinued because of an AE. CONCLUSIONS:The PK of lefamulin supports successful switch from iv to oral therapy; lefamulin was generally well tolerated.

SUBMITTER: Wicha WW 

PROVIDER: S-EPMC6449572 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature

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Pharmacokinetics and tolerability of lefamulin following intravenous and oral dosing.

Wicha Wolfgang W WW   Prince William T WT   Lell Claudia C   Heilmayer Werner W   Gelone Steven P SP  

The Journal of antimicrobial chemotherapy 20190401 Suppl 3


<h4>Objectives</h4>To explore the pharmacokinetics (PK) of oral and intravenous (iv) lefamulin after single and multiple doses, and the effect of food on bioavailability.<h4>Methods</h4>Lefamulin PK was examined in four studies. In Study 1, PK was assessed in patients with acute bacterial skin and skin structure infections who received repeated iv lefamulin q12h (150 mg). In Study 2, a four-period crossover study, healthy subjects received a single dose of oral lefamulin [immediate-release (IR)  ...[more]

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