Protease inhibitors prevent viral replication by selectively binding to viral proteases (e.g. HIV-1 protease) and blocking proteolytic cleavage of protein precursors that are necessary for the production of infectious viral particles. The first step in the activation of NCoV-2 i.e. Covid-19 is proteolytic cleavage of Spike or envelope protein S by protease present in all body cells of humans and more so in wind pipe and lungs. The protease can be inhibited by protease inhibitors present in many natural fruits and vegetables. These include apple, pineapple, resins, cabbage, cucumber, banana etc. Empower your body and immunity to keep up the resistance towards viral infections. Take plenty of warm water. Eat healthy and stay healthy!🙏