Phase 3 clinical trials confirmed that the Nitric Oxide Nasal Spray (NONS) from Israel’s SaNOtize represents a safe and effective antiviral treatment that shortens the course of COVID-19 and could prevent the transmission of COVID-19. It also received regulatory approval in India.

https://www.bloomberg.com/press-releases/2022-02-09/phase-3-clinical-trial-confirms-sanotize-s-breakthrough-treatment-is-99-effective-against-covid-19-receives-regulatory