Long‐term efficacy of opicapone in fluctuating Parkinson's disease patients: a pooled analysis of data from two phase 3 clinical trials and their open‐label extensions

The aim was to evaluate the efficacy of the catechol‐O‐methyltransferase inhibitor opicapone (25 and 50 mg) as adjunct therapy to levodopa in a pooled population of Parkinson's disease patients who participated in the pivotal double‐blind trials of opicapone and their 1‐year open‐label extensions.