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Study to Evaluate the Efficacy of N-acetylcysteine (NAC) in the Treatment of the Common Cold and Cough

A Randomized, Parallel-Group, Double-Blind, Placebo-Controlled, Multiple-Dose, Proof-of-Concept Study to Evaluate the Efficacy of N-acetylcysteine Capsules in the Treatment of the Common Cold (Viral URTI) Associated With Cough in an Adult Population

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02379637
Acronym
NAC cold cough
Enrollment
70
Registered
2015-03-05
Start date
2015-01-31
Completion date
2015-04-30
Last updated
2016-07-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Common Cold Associated With Cough

Keywords

N-acetylcysteine, adults, cough and cold

Brief summary

This study is designed to improve knowledge regarding the initial effectiveness of N-acetylcysteine (NAC) on cold and cough symptoms.

Interventions

DRUGN-acetylcysteine
DRUGPlacebo

Sponsors

Novartis
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* Cold/URTI symptoms occurring no more than 4 days * cough due to a cold or acute viral (URTI) with an onset of no more than 3 days * cough frequency with specified cut-off

Exclusion criteria

* A subchronic, or chronic cough (cough duration \> 2 months) due to any condition other than a cold/URTI * Diagnosed as suffering from any pulmonary conditions associated with cough, e.g., chronic obstructive pulmonary disease (COPD), acute or chronic bronchitis, asthma, cystic fibrosis * Taking any medications known to induce cough * Fever of greater than 39°C (102°F) orally * Complication of the common cold like otitis media, severe sinusitis, or pneumonia * Other protocol-defined inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Cough Count (Number of Coughs Will be Measured by a 24-hour Ambulatory Cough Monitoring System for the First 72 Hours)72 hoursNumber of coughs will be measured by a 24-hour ambulatory cough monitoring system for the first 72 hours

Secondary

MeasureTime frameDescription
Safety of Daily Dose of NAC (Number of Patients With Adverse Advents)7 DaysNumber of patients with adverse advents

Countries

Canada

Participant flow

Recruitment details

8 centers in canada Start date 26 Jan 2015 End date 01 Apr 2015

Pre-assignment details

Screening and randomization are on day 1 Duration of the study = 7 days

Participants by arm

ArmCount
A N-acetylcysteine
N-acetylcysteine N-acetylcysteine
35
B Placebo
Placebo Placebo
35
Total70

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event10
Overall StudyProtocol Violation01
Overall StudyWithdrawal by Subject10

Baseline characteristics

CharacteristicA N-acetylcysteineB PlaceboTotal
Age, Continuous33 years
STANDARD_DEVIATION 11.06
34 years
STANDARD_DEVIATION 12.9
33.5 years
STANDARD_DEVIATION 11.94
Body mass index26.3 kg/m^2
STANDARD_DEVIATION 4.49
27.3 kg/m^2
STANDARD_DEVIATION 4.59
26.8 kg/m^2
STANDARD_DEVIATION 4.53
Region of Enrollment
Canada
35 participants35 participants70 participants
Sex: Female, Male
Female
23 Participants23 Participants46 Participants
Sex: Female, Male
Male
12 Participants12 Participants24 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
2 / 352 / 35
serious
Total, serious adverse events
0 / 350 / 35

Outcome results

Primary

Cough Count (Number of Coughs Will be Measured by a 24-hour Ambulatory Cough Monitoring System for the First 72 Hours)

Number of coughs will be measured by a 24-hour ambulatory cough monitoring system for the first 72 hours

Time frame: 72 hours

Population: Full Analysis set

ArmMeasureValue (MEAN)Dispersion
A N-acetylcysteineCough Count (Number of Coughs Will be Measured by a 24-hour Ambulatory Cough Monitoring System for the First 72 Hours)6.92 log-transformed total cough countStandard Deviation 0.95
B PlaceboCough Count (Number of Coughs Will be Measured by a 24-hour Ambulatory Cough Monitoring System for the First 72 Hours)6.51 log-transformed total cough countStandard Deviation 0.83
Secondary

Safety of Daily Dose of NAC (Number of Patients With Adverse Advents)

Number of patients with adverse advents

Time frame: 7 Days

ArmMeasureValue (NUMBER)
A N-acetylcysteineSafety of Daily Dose of NAC (Number of Patients With Adverse Advents)4 participants
B PlaceboSafety of Daily Dose of NAC (Number of Patients With Adverse Advents)4 participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026