Clinical therapeutics
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Clinical therapeutics · Feb 2015
Randomized Controlled TrialGabapentin enacarbil and morphine administered in combination versus alone: a double-blind, randomized, pharmacokinetic, and tolerability comparison.
Coadministration of morphine with oral gabapentin has been shown to increase plasma gabapentin concentrations. This study evaluated whether there was any interaction between gabapentin enacarbil (GEn), which is a prodrug of gabapentin, and morphine in terms of pharmacokinetics, pharmacodynamics, safety, and tolerability. ⋯ No significant pharmacokinetic interaction between the 2 drugs was seen in this study. The VAS data suggest that the potential exists for increased adverse effects when GEn and morphine are coadministered. ClinicalTrials.gov identifier: NCT01476124.
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Clinical therapeutics · Feb 2015
Single- and multiple-dose pharmacokinetics of a hydrocodone bitartrate extended-release tablet formulated with abuse-deterrence technology in healthy, naltrexone-blocked volunteers.
A hydrocodone extended-release (ER) formulation was developed to provide sustained pain relief with twice-daily dosing. Developed using the CIMA abuse-deterrence technology platform (CIMA Labs Inc, Brooklyn Park, Minnesota), this formulation also provides resistance against rapid release of hydrocodone when tablets are comminuted and resistance against dose dumping when tablets are taken with alcohol. Two open-label studies evaluated hydrocodone ER pharmacokinetics (PK) after single- and multiple-dose administration in healthy, naltrexone-blocked subjects. ⋯ The PK profile of hydrocodone ER was qualitatively similar after single- and multiple-dose administration. The steady-state profile demonstrated sustained exposure with limited swing and fluctuation. Single and multiple doses of hydrocodone ER (45 and 90 mg) were generally well tolerated in healthy subjects receiving naltrexone; however, exposure to naltrexone may have confounded the interpretation of safety findings.