Clinical Pharmacokinetics of IPX066: Evaluation of Dose Proportionality and Effect of Food in Healthy Volunteers.

Abstract:

OBJECTIVES:IPX066 is an oral, extended-release capsule formulation of carbidopa-levodopa (CD-LD) available in 4 strengths. The goals of this investigation were to assess the dose proportionality of IPX066 and to study the effects of a high-fat, high-calorie meal and of sprinkling the capsule contents on applesauce on the pharmacokinetics of IPX066 in healthy volunteers. METHODS:Three open-label studies were conducted. In the first study, subjects received 1 capsule of each IPX066 strength (23.75-95, 36.25-145, 48.75-195, and 61.25-245 mg of CD-LD). In the second study, subjects received 1 and 2 capsules of IPX066 245-mg LD under fasting conditions. In the third study, subjects received 2 capsules of IPX066 245-mg LD under 3 conditions: fasting; following a high-fat, high-calorie breakfast; and with the capsule contents sprinkled on applesauce under fasting conditions. RESULTS:Peak plasma concentrations (Cmax) and systemic exposure (AUCt, AUCinf) for LD and CD increased dose-proportionally over the range of the IPX066 capsule strengths. Comparison of 1 and 2 IPX066 245-mg LD capsules showed dose-proportional pharmacokinetics for Cmax and AUCt. Sprinkling the capsule contents on applesauce did not affect the pharmacokinetics. A high-fat, high-calorie meal delayed the initial increase in LD concentration by approximately 1 to 2 hours, reduced Cmax by 21%, and increased AUCinf by 13% compared with the fasted state. CONCLUSIONS:IPX066 shows dose-proportional pharmacokinetics. Sprinkling the capsule contents on applesauce does not affect the pharmacokinetics; a high-fat, high-calorie meal delayed absorption by 1 to 2 hours, slightly reduced Cmax, and slightly increased extent of absorption.

journal_name

Clin Neuropharmacol

authors

Yao HM,Hsu A,Gupta S,Modi NB

doi

10.1097/WNF.0000000000000126

subject

Has Abstract

pub_date

2016-01-01 00:00:00

pages

10-7

issue

1

eissn

0362-5664

issn

1537-162X

journal_volume

39

pub_type

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