I have been using liquid ReadiSorb to reduce the symptoms of viral infections, colds, and flu, for more than 15 years. Now I take the ReadiSorb GO powder. I believe it has been effective in reducing the flu-like symptoms I got after vaccinations for the flu, shingles, pneumococcal pneumonia and Covid 19. I had a very short 3-day bout with the flu in early February 2020 which could actually have been Covid 19. Regardless which virus it was, I believe it was ReadiSorb GO that enabled me to recover from the virus so quickly with very moderate symptoms.