1. decision of withholding invasive mechanical ventilation 2. shock requiring vasopressor infusion 3. co-infection with another respiratory pathogen which could be responsible of pneumonia 4. hypersensitivity to captopril, to any other angiotensin converting enzyme inhibitor or any of the excipients of the specialty used 5. history of angio-oedema 6. history of ace-inhibitor allergy 7. known pregnancy or current lactation: female subject of childbearing potential should have a negative serum pregnancy test prior to receiving the first dose of study medication. 8. patient who is currently enrolled in other investigational study; 9. persons deprived of their liberty by judicial or administrative decision, 10. persons under legal protection/safeguard of justice, 11. patients under duress psychiatric care, 12. persons admitted to a health or social institution 13. patient on state medical aid

1. decision of withholding invasive mechanical ventilation 2. shock requiring vasopressor infusion 3. co-infection with another respiratory pathogen which could be responsible of pneumonia 4. hypersensitivity to captopril, to any other angiotensin converting enzyme inhibitor or any of the excipients of the specialty used 5. history of angio-oedema 6. history of ace-inhibitor allergy 7. known pregnancy or current lactation: female subject of childbearing potential should have a negative serum pregnancy test prior to receiving the first dose of study medication. 8. patient who is currently enrolled in other investigational study; 9. persons deprived of their liberty by judicial or administrative decision, 10. persons under legal protection/safeguard of justice, 11. patients under duress psychiatric care, 12. persons admitted to a health or social institution 13. patient on state medical aid

decision of withholding invasive mechanical ventilation shock requiring vasopressor infusion co-infection with another respiratory pathogen which could be responsible of pneumonia hypersensitivity to captopril, to any other angiotensin converting enzyme inhibitor or any of the excipients of the specialty used history of angio-oedema history of ace-inhibitor allergy known pregnancy or current lactation: female subject of childbearing potential should have a negative serum pregnancy test prior to receiving the first dose of study medication. patient who is currently enrolled in other investigational study; persons deprived of their liberty by judicial or administrative decision, persons under legal protection/safeguard of justice, patients under duress psychiatric care, persons admitted to a health or social institution patient on state medical aid

decision of withholding invasive mechanical ventilation shock requiring vasopressor infusion co-infection with another respiratory pathogen which could be responsible of pneumonia hypersensitivity to captopril, to any other angiotensin converting enzyme inhibitor or any of the excipients of the specialty used history of angio-oedema history of ace-inhibitor allergy known pregnancy or current lactation: female subject of childbearing potential should have a negative serum pregnancy test prior to receiving the first dose of study medication. patient who is currently enrolled in other investigational study; persons deprived of their liberty by judicial or administrative decision, persons under legal protection/safeguard of justice, patients under duress psychiatric care, persons admitted to a health or social institution patient on state medical aid

1. decision of withholding invasive mechanical ventilation 2. shock requiring vasopressor infusion 3. co-infection with another respiratory pathogen which could be responsible of pneumonia 4. hypersensitivity to captopril, to any other angiotensin converting enzyme inhibitor or any of the excipients of the specialty used 5. history of angio-oedema 6. history of ace-inhibitor allergy 7. known pregnancy or current lactation: female subject of childbearing potential should have a negative serum pregnancy test prior to receiving the first dose of study medication. 8. patient who is currently enrolled in other investigational study; 9. persons deprived of their liberty by judicial or administrative decision, 10. persons under legal protection/safeguard of justice, 11. patients under duress psychiatric care, 12. persons admitted to a health or social institution 13. patient on state medical aid

1. decision of withholding invasive mechanical ventilation 2. shock requiring vasopressor infusion 3. co-infection with another respiratory pathogen which could be responsible of pneumonia 4. hypersensitivity to captopril, to any other angiotensin converting enzyme inhibitor or any of the excipients of the specialty used 5. history of angio-oedema 6. history of ace-inhibitor allergy 7. known pregnancy or current lactation: female subject of childbearing potential should have a negative serum pregnancy test prior to receiving the first dose of study medication. 8. patient who is currently enrolled in other investigational study; 9. persons deprived of their liberty by judicial or administrative decision, 10. persons under legal protection/safeguard of justice, 11. patients under duress psychiatric care, 12. persons admitted to a health or social institution 13. patient on state medical aid