 probiotics are live microorganisms that can help improve health when consumed. Previous studies suggest that probiotics may play a role in treating respiratory tract infections such as COVID-19. This study reviews the connection between probiotics and the immune system and explores their potential use as part of COVID-19 treatment. The authors found that probiotics bind to ACE2, a protein expressed in both the lungs and gut, suggesting that they could potentially be used to treat COVID-19. Currently, there are no formal guidelines recommending probiotic consumption during COVID-19, but further research is needed to determine whether probiotics should be included in the treatment of COVID-19. This article was authored by Ginter Dharmawan, Marshall Tendine, Adi Dharmawan, and others.