Through this book I am presenting an exhaustive list of medicinal plants used in the treatment of various diseases such as malaria, cancer, antifungal, antibacterial and antiviral diseases, diabetes, hypertension and digestive disorders. The book is very well illustrated giving the details of the families these medicinal plants belong to. Special emphasis is given to plants used in Ayurveda to boost immunity especially in the present times of the spread of COVID-19.