
Medicinal plants are the most exclusive source of life saving drugs for majority of the world’s population. The use of medicinal plant extract increases the body’s immune system and lowers the allergies and asthma. The four medicinal plants taken for the present study possess digestive property. The experiment conducted to study the biochemical parameters of the leaves of the four medicinal plants viz., R. tomentosa, P. guajava, C, aurantium and C. limonum showed a significantly higher protein, carbohydrate and chlorophyll content in C. aurantium. The chlorophyll 'b' and total chlorophyll content was found to be significantly higher in R. tomentosa.