Department of Food Technology, School of Applied and Life Sciences, Uttaranchal University, Dehradun

The leaves are well known for medicinal and herbal properties. Due to fast life and westernization all leaves based products has been replaced by cosmetic and chemical based products. The normal sized guava tree (Psidium guajava) is a medium sized tree belonging to the family Myrtaceae which is native to tropical countries. This review summarizes the current knowledge of major pharmacological constituents with major emphasis on traditional and pharmacological activities of fruit based leaves which has discarded by people because of lack of awareness. It is reported that the presence of folic acid in guava leaf are responsible for the antioxidant activity. Various tests are being performed on both the leaf extract in its dried as well as fresh form, like DPPH, Total phenolic content, Vitamin C, moisture determination. In view of its wide pharmacological and biological activities, it seems to be having a great therapeutic potential