ClinicalTrials.gg
Status unknownNCT04928495Updated Jun 30, 2021

Clinical Trial With N-acetylcysteine and Bromhexine for COVID-19

A Phase 3 interventional study of Vitamin C and N-acetylcysteine (NAC) in COVID-19, sponsored by Universidade Federal do Ceara. Status unknown at 1 site in Brazil. Open to participants aged 18 Years to 60 Years. Per ClinicalTrials.gov, last updated 2021-06-30.

Sponsored by Universidade Federal do Ceara · Phase 3, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Jun 2021), so the status shown — last known as Not yet recruiting — may be out of date.
Phase
Phase 3
Study type
Interventional
Enrollment
219
Allocation
Randomized
Ages
18 Years to 60 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 12 studies testing acetylcysteine in COVID-19 — 1 open to participants now, 2 under way, none of them phase 3. Acetylcysteine · COVID-19.

Planned enrollment
2nd of 12
219 · median 70
Started
2021
with 3 others
Phase 3
3 of 12
none open now
Registered
7th of 12
by date
Lead sponsor
1 of 12
Universidade Federal do Ceara

Among the 12 studies testing acetylcysteine in COVID-19, this one is the 2nd largest by planned enrollment, is one of 4 that started in 2021, is one of 3 in phase 3, and was the 7th registered.

By phase

12 studies; the count open now beside each. This study's row is marked.

Phase 24 · 1 open
Phase 13 · 0 open
Phase 3this study3 · 0 open
Phase 1/22 · 0 open

By the year they started

First in 2020; this study’s year is marked. 4 started in 2021.

Tested beside acetylcysteine

Size and results

Median enrollment 70 across the 12 interventional studies. Of the 5 that completed or were terminated, 1 (20%) have results posted.

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Watch this landscapeDownload CSVWith an account: a weekly mail of what changed among 12 studies testing acetylcysteine in COVID-19, or all of them as a file.
02

Study summary

Clinical, control, double-blind, randomized experimentation with N-acetylcysteine and bromhexine for COVID-19.

Read the detailed description

Several therapeutic agents have been evaluated for the treatment of COVID-19, but only one, the antiviral drug called remdesivir administered intravenously, has shown to be effective in shortening the duration of the disease by 26.7% in critically ill patients. This proposal has the primary objective (1) to determine the effect of N-acetylcysteine (NAC; reducing substance and complementary viral intercepting action) and combination of NAC + bromhexine (BMX; viral protease inhibitor), on the clinical duration of COVID-19 evaluated on the 7th. day of outpatient follow-up, observing the score of clinical signs and symptoms of the disease. The study has as secondary objectives: (2) to assess the change in viral load by RT-qPCR of SARS-CoV-2 between the 1st, 7th, and 14th. days of the experimental protocol; (3) determine the action of NAC and BMX + NAC on the immune response using the rapid ELISA test (IgM / IgG) to be performed on the 14th. monitoring day of the experimental protocol; and (4) Assess the effect of NAC and BMX + NAC on the change in the serum level of inflammation biomarkers and reducing substances (IL-6, MCP-3, D-dimer, IL1-RA, IL-10, GCSF, TNF- α, MCP-1, IL-2R, MIP-1 alpha, IP-10, IL-8, NT-proBNP, Troponin I, PCR and procalcitonin; glutathione peroxidase-GPx; superoxide dismutase-SOD and catalase-CAT) of patients collected on the 1st. and 14 o. study days. The study will be a prospective, double-blind, placebo control and randomized clinical trial of a total of 219 patients, 73 for each treatment group, with mild to moderate disease, equal to or above 18 years of age, with clinical signs and symptoms. of COVID-19 and certified by the RT-qPCR test for the detection of SARS-CoV-2 viral load. The study will be carried out using the Surveillance, Service and Research Network - REVAP-C19, NUBIMED, FAMED, UFC, Fortaleza, CE in order to facilitate the efficiency of patients' entry into the study. The random groups of treatments will be: (1) Placebo control (Vitamin C - 500 mg / day, for 10 days); (2) N-acetylcysteine (NAC; 1800 mg / day, for 10 days); and (3) NAC (1800 mg / day, for 10 days) + Bromhexine Hydrochloride (BMX; 32 mg / day, for 10 days). The study has the perspective of evaluating the effectiveness of NAC alone or combined with BMX in the duration of the clinical score of mild to moderate cases of COVID-19. The study will also assess secondary parameters such as the effect of drugs on changing viral load, immune response, and changing the inflammatory reaction and reducing substances in the plasma of the study patients. In this sense, the trial plans to minimize the evolution of the disease to severe cases, thus alleviating the collapse of the health system and minimizing the social, economic and health disorders of the pandemic by SARS-CoV-2.

03

Conditions studied

  • COVID-19

Browse trials for

Keywords

  • N-acetylcysteine
  • Bromhexine
  • COVID-19
  • Clinical trial
04

Who can participate

Ages eligible
18 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

The inclusion criteria will be:

  1. patients with clinical signs and symptoms of COVID-19; and
  2. patients over 18 years and below 60 years of age.

The exclusion criteria will be:

  1. participate in another clinical intervention study;
  2. you have a disease or other medical condition that prevents you from using the medications for this intervention;
  3. patient incapable of ingesting, retaining and absorbing the intervention medications; and (d) is mentally disabled.
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
219 participants (estimated)

Study arms

  • Placebo comparator
    Treatment group 1

    Control placebo (Vitamin C - 500mg / day, for 10 days)

    Drug: Vitamin C

  • Active comparator
    Treatment group 2

    N-acetylcysteine (NAC; 1800 mg / day, for 10 days)

    Drug: N-acetylcysteine (NAC)

  • Active comparator
    Treatment group 3

    NAC (1800 mg / day) + bromhexine-BMX (32 mg / day for 10 days)

    Drug: NAC + Bromhexine (BMX)

Interventions

  • DrugVitamin C

    Vitamin C 500 mg / day for ten days

  • N-acetylcysteine 1800 mg / day for ten days.

  • DrugNAC + Bromhexine (BMX)

    Drug pages: Acetylcysteine · Bromhexine

    NAC + Bromhexine (BMX) 32 mg / day for ten days.

06

What researchers measure

Primary outcomes

  1. The time to recovery, defined at day 7 days follow up after enrollment, on which a patient met the criteria for category 1 or 2 on the four-category ordinal scale. [Time Frame: Day 7 follow up after enrollment.]

    The categories are as follows: 1 - No signals and symptoms; 2 - One signal or symptom; 3 - Two signals or symptoms; 4 - Three or more signals or symptoms.

    Time frame: Day 7

Secondary outcomes

  1. SARS-CoV-2 RNA viral load measurements change. [ Time Frame: Change between Day 1 and Day 7 follow up after enrollment. ]

    Molecular diagnostic analyzes will be done by Real-Time PCR (qPCR) based on official guidelines determined by the American CDC (CDC-006-00019, Revision: 03; https://www.fda.gov/media/134922/download). The nasopharyngeal swab samples collected (Covid-19 test) will proceed to the nucleic acid isolation (NuAc). All qPCR reactions will be by uniplex diagnosis. Results will be reported in copies of RNA / ml.

    Time frame: Day 1 and Day 7

  2. Proportion of patients with qualitative serum IgM / IgG. [ Time Frame: Proportion of positive patients at Day 7 for IgM / IgG (N; %). ]

    The IgM / IgG immune response to SARS-CoV-2 will be qualitative measure using rapid diagnostic test provide by Eco Diagnóstica (Nova Lima, MG, Brazil).

    Time frame: Day 7

  3. Biomarkers (IL-6, MCP-3, D-dimer, IL1-RA, IL-10, GCSF, TNF-α, MCP-1, IL-2R, MIP-1 alpha, IP-10, IL-8, NT-proBNP, Troponin I, CRP and procalcitonin) measurements change. [ Time Frame: Change between Day 1 and Day 14 follow up after enrollment. ]

    We will use the Luminex XMAP Technology (MAGPIX® System, Merck Co., Kenilworth, NJ) which includes the simultaneous analysis, in the same plasma sample (volume of 25 uL), of a panel of protein markers of pro and anti-inflammatory activity (IL-6, MCP-3, D-dimer, IL1-RA, IL-10, GCSF, TNF-α, MCP-1, IL-2R, MIP-1 alpha, IP-10, IL-8, NT-proBNP, Troponin I). Specific antibodies covalently linked to the carboxylated microspheres containing different specific fluorochromes will be used. Standard curves will be constructed for each protein and then their quantification. Results will be reported in pg / mL.

    Time frame: Day 1 and Day 14.

07

Study locations

1 site
  • Núcleo de Biomedicina - NUBIMED
    Fortaleza, Ceará 60430270, Brazil
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Jul 2021; primary completion for Apr 2022, 8 months later.

Of 285 non-industry phase 3 interventional studies under COVID-19, half reached primary completion within 10 months of starting (the median), counting those still running; a quarter within 5 and three quarters within 19. This study's planned 8 months is below that.

Counting every sponsor, half of 453 studies reached it within 9 months; a quarter within 4 and three quarters within 17.

How these figures are worked out, and which studies are left out of them.

Registered
Jun 14, 2021
First posted
Jun 16, 2021
StartEst.
Jul 15, 2021
Primary completionEst.
Apr 9, 2022
CompletionEst.
Jun 9, 2022
Last update
Jun 30, 2021
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 30, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04928495
Lead sponsor
Universidade Federal do Ceara
Collaborators
Paulista School of Medicine-EPM, UNIFESP, Health Surveillance Secretariat - SVS, Central Laboratory of Public Health of Ceara - LACEN-CE, Leonardo da Vinci Hospital - HLV, São José Hospital for Infectious Diseases - HSJ, Ceará Health Secretariat - SESA, Municipal Health Secretary - SMS-Fortaleza
Responsible party
Aldo Ângelo Moreira Lima (Professor, Universidade Federal do Ceara) — Principal investigator
First posted
Jun 16, 2021
Start date
Jul 15, 2021 (estimated)
Primary completion
Apr 9, 2022 (estimated)
Completion
Jun 9, 2022 (estimated)
Last update
Jun 30, 2021

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Jun 2021. You cannot join it, but the record below documents what was studied.

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Studies of the drugs tested here: Acetylcysteine · Bromhexine

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