Clinical trial

A Cross-sectional Study to Measure Cough in Severe Asthma

NCT03999203

StatusCOMPLETED

Study typeINTERVENTIONAL

Start date2017-10-04

PhaseNA

Study timeline

Study start (actual)2017-10-04Date precision: day

Registry last updated2023-11-22

Observed by CureCurrent2026-10-07

Recorded dates are source observations, not predictions. Missing milestones are not estimated.

Conditions

Asthmaunresolved

Coughunresolved

Interventions

Citric acidDRUG · verified · RxNorm: citric acid

Leicester Cough monitorDEVICE

fractional exhaled nitric oxide testing (FeNO)OTHER

Patient reported outcome measuresOTHER

Sponsors & collaborators

Queen's University, Belfastlead sponsor

King's College Londoncollaborator

Registry source

Open the source record to verify current eligibility, contacts, locations and registry updates.

Open NCT03999203 on ClinicalTrials.gov ↗

Registry-derived research relationships: ClinicalTrials.gov. Raw condition and intervention labels remain distinct from canonical MONDO/RxNorm entities unless separately normalized.