NCT07053956Completed
Impact of Chewing Gum on FeNO Levels in Patients With Bronchial Asthma
Source: ClinicalTrials.gov · Last updated 30 Dec 2025
Brief summary (registry, in English)
The aim of the study is to investigate the influence of chewing gum consumption on FeNO levels in asthma patients in order to avoid systematic errors in treatment decisions.
- Status (registry)
- Completed
- Study type
- Interventional
- Enrollment
- 30 (actual)
- First submitted
- 27 Jun 2025
- Start date
- 1 Aug 2025
- Primary completion date
- 17 Dec 2025
- Lead sponsor
- RWTH Aachen University
- Diseases
- Asthma
- NCT number
- NCT07053956
What you commit to
- Study type: Interventional
- Participants enrolled: 30
- From 1 Aug 2025 to the primary completion date, 17 Dec 2025
- 2 sites in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Other illness
- Current or past medically relevant illness or treatment that could impact the evaluability of the study.
- Known allergies or intolerances to the contents of chewing gum
Other
- FeNO levels \< 25 ppb
- Medical contraindications to conducting FeNO measurements
- Expected unwillingness to actively participate in study-related measures.
- Smoking, alcohol consumption, mouthwash use, chewing gum/candy/lettuce/spinach/kale/beetroot/radish/sausage consumption, or exercise on the day of the study.
Who the study is looking for
- have known bronchial asthma with a FeNO level ≥25 ppb at regular medical checkups
- are of legal age
- are mentally and physically capable of understanding the significance and scope of the study and obeying the instructions of study personnel
- are legally competent and have signed the informed consent form.
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
Sites (2)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Department of Pneumology and Intensive Care Medicine, RWTH Aachen University Hospital Coordinator of this site? Confirm its status | Aachen | Germany | Unknown status |
| University Hospital Aachen Coordinator of this site? Confirm its status | Aachen | Germany | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.