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- W2541999838 abstract "Aims To compare the levodopa/carbidopa (LC) and levodopa/benserazide (LB) pharmacokinetic profiles following repeated doses of opicapone (OPC) administered apart from levodopa. Methods Two randomized, double blind, sex‐balanced, placebo‐controlled studies in four groups of 12 or 18 healthy subjects each. In each group, enrolled subjects received a once‐daily morning (5, 15 and 30 mg) or evening (5, 15 and 50 mg) administration of OPC or placebo for up to 28 days. On the morning of Day 11, 12 h after the OPC or placebo evening dose, or the morning of Day 21, 1 h after the OPC or placebo dose, a single dose of immediate‐release 100/25 mg LC was administered. Similarly, on Day 18 morning, 12 h after the OPC or placebo evening dose, or Day 28 morning, 1 h after the OPC or placebo dose, a single dose of immediate‐release 100/25 mg LB was administered. Results All OPC treatments, in relation to the placebo group, presented a higher extent of exposure (AUC) to levodopa following either LC or LB doses. A relevant but not dose‐dependent increase in the levodopa AUC occurred with all OPC dose groups in relation to placebo. All active treatments significantly inhibited both peak (E max ) and extent (AUEC) of the catechol‐O‐methyltransferase activity in relation to placebo. The tolerability profile was favourable. Conclusion Opicapone, as once‐daily oral evening regimen and/or 1 h apart from levodopa therapy, increases the bioavailability of levodopa associated with its pronounced, long‐lasting and sustained catechol‐O‐methyltransferase inhibition. The tolerability profile was favourable and similar between OPC and placebo." @default.
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- W2541999838 date "2016-12-02" @default.
- W2541999838 modified "2023-10-18" @default.
- W2541999838 title "Effect of opicapone multiple-dose regimens on levodopa pharmacokinetics" @default.
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- W2541999838 doi "https://doi.org/10.1111/bcp.13156" @default.
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