Background: Coronavirus disease 2019 (COVID-19) is an ongoing, rapidly spreading pandemic
caused by Severe Acute Respiratory Syndrome Coronavirus2 (SARS-CoV2). Among all the infected countries
around the globe as of now (June 15, 2020), the total confirmed positive cases reported are 7,805,148, with the
death of 431,192. At present, no specialized treatments evolved to cure COVID-19. Its treatment is symptomatic.
Though huge efforts are being made to produce potential therapies to scuffle COVID-19, no drug has been
discovered so far.
Objective: Natural products have been playing a significant role in disease control since ancient days. These
products serve as templates for designing new anti-microbial agents with a different mechanism of action and
also open a door for investigation of effective anti-viral drugs to combat COVID-19. By focusing on this, the
authors have narrated the basic structure, infection, and pathogenesis of SARS-CoV2 virus in humans and also
reported various natural products or plant-based extracts/bioactive compounds tested against coronaviruses like
SARS and MERS, as these viruses are structurally similar to SARS-CoV2 and can be used in designing novel
drug against this virus.
Conclusion: The natural products having the potential to combat SARS, MERS, and other viruses reviewed in
this review article might have anti-viral activities against the SARS-CoV2 virus and can be used directly for further
preclinical studies. Therefore, all efforts should be focused on overcoming this serious problem to save
many people's lives all over the world.