Summary of findings ‐ Inhaled mannitol vs control (non‐respirable mannitol)Lung function: FEF25‐75 mL/s (change from baseline) · adults, children and young people with CF1 finding from 1 reviewInhaled mannitol for cystic fibrosis 2020 · Cochrane Headline outcomes onlyno estimate extracted1261 participantsLow