To estimate the pharmacokinetics and relative bioavailability of oxycodone after administration of 40 mg doses of PF-00345439 formulations taken whole under fed conditions and after chewing under fasted conditions in healthy volunteers
This study will estimate the pharmacokinetics and relative bioavailability of oxycodone following oral administration of single 40 mg doses of PF-00345439 Formulations J and K compared with the reference PF-00345439 Formulation A, all taken whole and under fed conditions in healthy volunteers. In addition, the study will estimate the pharmacokinetics and relative bioavailability of oxycodone followingoral administration of single 40 mg doses of PF-00345439 Formulation J or K (to beselected based on Periods 1-3) after chewing under fasted conditions compared to that taken whole in the fed state in healthy volunteers, and assess the single-dose safety and tolerability of oxycodone inPF-00345439 formulations in healthy volunteers when administered under a naltrexone block.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
19
One capsule of 40 mg PF-00345439 Formulation A, single dose, taken whole and under fed conditions
One capsule of 40 mg PF-00345439 Formulation J, single dose, taken whole and under fed conditions
One capsule of 40 mg PF-00345439 Formulation K, single dose, taken whole and under fed conditions
Pfizer Investigational Site
New Haven, Connecticut, United States
Area Under the Curve From Time Zero to Extrapolated Infinite Time (AUCinf) (if data permit, otherwise Area Under the Curve From Time Zero to Last Quantifiable Concentration [AUClast]) of oxycodone.
Time frame: 0, 0.5, 1, 2, 4, 6, 8, 12, 14, 16, 24, 36, 48 hours post-dose
Maximum Observed Plasma Concentration (Cmax)
Time frame: 0, 0.5, 1, 2, 4, 6, 8, 12, 14, 16, 24, 36, 48 hours post-dose
Area Under the Curve From Time Zero to Last Quantifiable Concentration (AUClast) of oxycodone, as data permit
Time frame: 0, 0.5, 1, 2, 4, 6, 8, 12, 14, 16, 24, 36, 48 hours post-dose
Time to Reach Maximum Observed Plasma Concentration (Tmax) of oxycodone, as data permit.
Time frame: 0, 0.5, 1, 2, 4, 6, 8, 12, 14, 16, 24, 36, 48 hours post-dose
Plasma Decay Half-Life of oxycodone, as data permit.
Time frame: 0, 0.5, 1, 2, 4, 6, 8, 12, 14, 16, 24, 36, 48 hours post-dose
Concentration at time 24 hours (C24) of oxycodone, as data permit.
Time frame: 0, 0.5, 1, 2, 4, 6, 8, 12, 14, 16, 24, 36, 48 hours post-dose
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One capsule of 40 mg PF-00345439 Formulation J or K, single dose, chewed and under fasted conditions