Herbal and Ayurvedic Plants as Remedial Approach for Viral Diseases with Focus on COVID-19: A Narrative Review

Background: Infectious diseases have posed a major threat to human survival for centuries and can devastate entire populations. Recently, the global outbreak of COVID-19 has increased exponentially, affecting more than 200 countries and millions of lives since the fall of 2019, largely due to the ineffectiveness of existing antiviral therapies. WHO announced it a public health emergency of international concern. A significant waiting period in antiviral therapy hindered by the rapid evolution of severe acute respiratory syndrome-coronavirus-2 aggravated the situation ensuing imposition of strict laws (e.g., communal dissociation, international travel restrictions, and maintenance of hygiene) that would help in inhibiting further outspread of COVID-19. Ayurveda system of medicine offers a holistic approach to the COVID-19 pandemic. Objective: This review aims to highlight the potential of medicinal herbs and Ayurvedic drugs as the remedial approach for viral diseases, such as COVID- 19. Methods: We reviewed the literature from journal publication websites and electronic databases, such as Bentham, Science Direct, Pub Med, Scopus, USFDA, etc. Results: The drugs used in the traditional system of medicine have the potential to prevent and cure the infected patient. Ayurvedic therapies are known for regulating immunity and rejuvenation properties that behold much promise in the management of COVID-19 disease. Government of India, Ministry of AYUSH recommends some precautionary fitness measures and an increase in immunity with special reference to respiratory health. Conclusion: While there is no medication for COVID-19 as of now, taking preventive measures and boosting body immunity is highly recommended. A number of medicinal plants that play an important role in revitalizing the immune system are easily accessible in home remedies.