Study to Evaluate the Safety and Efficacy of VIRAZOLE® in Hospitalized Adult Participants With Respiratory Distress Due to COVID-19
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ClinicalTrials.gov Identifier: NCT04356677 |
Recruitment Status :
Withdrawn
(Due to pandemic status changing in Canada prior to investigative sites being initiated for participation, and that concurrent participant recruitment in the global study BHC-RIB-5401-GL will achieve target enrollment across all countries.)
First Posted : April 22, 2020
Last Update Posted : June 22, 2021
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
COVID19 | Drug: 50 mg/mL Virazole Drug: 100 mg/mL Virazole | Phase 1 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 0 participants |
Allocation: | Non-Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | An Open-Label Study to Evaluate the Safety and Efficacy of VIRAZOLE® (RIBAVIRIN FOR INHALATION SOLUTION, USP) in Hospitalized Adult Participants With Respiratory Distress Due to COVID-19 |
Estimated Study Start Date : | May 2021 |
Estimated Primary Completion Date : | August 2021 |
Estimated Study Completion Date : | August 2021 |

Arm | Intervention/treatment |
---|---|
Experimental: 50 mg/mL Virazole
50 mg/mL Virazole aerosolized and administered over 1 hour twice a day for up to 6 days.
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Drug: 50 mg/mL Virazole
50 mg/mL Virazole aerosolized and administered over 1 hour twice a day for up to 6 days. |
Experimental: 100 mg/mL Virazole
100 mg/mL Virazole aerosolized and administered over 30 minutes twice a day for up to 6 days.
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Drug: 100 mg/mL Virazole
100 mg/mL Virazole aerosolized and administered over 30 minutes twice a day for up to 6 days. |
- Change in the clinical status severity (CSS) rating from the first dose date up to the completion of treatment [ Time Frame: 7 days ]
The severity rating will be based on the ordinal scale of clinical status as follows:
- Death.
- Hospitalized, on invasive mechanical ventilation or extracorporeal membrane oxygenation (ECMO).
- Hospitalized, on non-invasive ventilation or high flow oxygen devices.
- Hospitalized, requiring supplemental oxygen.
- Hospitalized, not requiring supplemental oxygen.
- Not hospitalized, limitation on activities.
- Not hospitalized, no limitations on activities.
- Time to recover gas exchange to a PaO2/FiO2 ≥300 for at least 24 hours. [ Time Frame: 7 days ]
- Time to reach peripheral capillary oxygen saturation (Sp02) >94% for at least 24 hours. [ Time Frame: 7 days ]

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Male or non-pregnant female ≥ 18 years of age.
- Willing and able to provide written informed consent (or provided by a proxy).
- Currently hospitalized with laboratory confirmed COVID-19 novel coronavirus infection.
- PaO2/FiO2 ratio <300 mmHg.
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Illness of any duration, and at least one of the following:
- Radiographic infiltrates by imaging (chest x-ray, CT scan, etc.), OR
- Clinical assessment (evidence of rales/crackles on exam) AND SpO2 ≤94% on room air, OR
- Requiring mechanical ventilation and/or supplemental oxygen.
- Once released from the hospital, women of childbearing potential (WOCBP) and all men must agree to use at contraception methods for 9 months.
Exclusion Criteria:
- Pregnant or breast feeding.
- Respiratory distress for reasons other than COVID-19 infection (e.g., congestive heart failure (CHF), bacterial pneumonia, etc.).
- Presence of secondary bacterial pneumonia.
- Presence of significant pulmonary fibrosis.
- Hypotension (need for hemodynamic pressors to maintain blood pressure).
- Greater than 7 days on mechanical ventilation.
- Anemia defined as hemoglobin or RBC <75% of the institutional lower limit of normal for race, age and gender.
- History of COPD or bronchospasm prior to COVID-19 infection.
- History of hypersensitivity to ribavirin.
- Any condition that could cause noncompliance with treatment or may otherwise contraindicate the subject's participation in the study
- Subject is currently participating in any drug or device clinical investigation.
- Subject has received an investigational agent or approved drug that, in the Investigator's judgement, may have a chemical or pharmacological interaction with Virazole if administered within 5 half-lives or 30 days of the Baseline Visit.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04356677
Study Director: | Anya Loncaric | Bausch Health |
Responsible Party: | Bausch Health Americas, Inc. |
ClinicalTrials.gov Identifier: | NCT04356677 |
Other Study ID Numbers: |
BHC-RIB-5401-HC |
First Posted: | April 22, 2020 Key Record Dates |
Last Update Posted: | June 22, 2021 |
Last Verified: | June 2021 |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | No |
COVID-19 Pneumonia, Viral Pneumonia Respiratory Tract Infections Infections Virus Diseases Coronavirus Infections Coronaviridae Infections Nidovirales Infections |
RNA Virus Infections Lung Diseases Respiratory Tract Diseases Ribavirin Antimetabolites Molecular Mechanisms of Pharmacological Action Antiviral Agents Anti-Infective Agents |