Overview Sildenafil in COVID-19 Status: Completed Trial end date: 2021-06-30 Target enrollment: Participant gender: Summary This randomised trial aims to assess the role of sildenafil in improving oxygenation amongst hospitalised patients with COVID19. Phase: Phase 1/Phase 2 Details Lead Sponsor: Universidad Nacional Andres BelloCollaborator: Hospital Naval Almirante Nef, ViƱa del Mar, ChileTreatments: Sildenafil Citrate