The Chinese Centre for Disease Control and Prevention (CDC) isolated COVID-19 AS Infectious diseases pose a significant risk to the global population. Coronaviruses are enveloped, non-segmented, positive-sense RNA viruses belonging to the Coronaviridae family. On March 11, 2020 WHO, declared COVID-19 a pandemic. Treatment for COVID-19 infection is not yet available. In india in general, there are limited studies on awareness and attitudes among Indians towards infectious diseases, especially during outbreaks such as coronavirus. Tamil Nadu has come out with public health advertisement promoting Nilavembu Kudineer and Kabasura Kudineer as preventive and controlling the morbidity level of public on contracting viral fever. The aim of the study is to assess the health literacy on knowledge regarding nilavembu kudineer and kabasurakudineer for immunity boosting of covid-19 among adults in rural population. Descriptive research design were adopted. The sample size was 100 adults in age group between 18-60 years selected using Non –probability convenience sampling techniques. The health literacy on knowledge regarding nilavembu kudineer and kabasurakudineer was assessed using self structured questions given with yes or no option. The data was analysed by using descriptive and inferential statistics. Study explains us clearly that, among 100 respondents, 47% (47) of the adults possess considerable good level of knowledge, 48% (48) of the adults possess considerable average level of knowledge and 5% (5) of the adults possess considerable inadequate knowledge on Nilavembu- Kabasura kudineer as immunity booster against deadly viruses along with covid – 19. Study finding also revealed that there was an increase in the mean total knowledge score of adults with higher level of education, it was significant at 0.01 level as the sample size was N=100.