Targeting fatigue in COPD with chronic respiratory failure undergoing pulmonary rehabilitation: a multicentre, randomised, placebo-controlled trial of L-arginine/liposomal vitamin C.
BACKGROUND Pulmonary rehabilitation (PR) is the cornerstone of non-pharmacological treatment for chronic obstructive pulmonary disease (COPD), yet fatigue often persists despite rehabilitation. We conducted a multicentre, randomised, double-blind, placebo-controlled trial to evaluate whether oral L-arginine plus liposo...