Swine flu is an acute respiratory disease of pigs caused by tiny spheroid virus that is H1N1 virus that belongs to the influenza A virus group. This virus spread the infection in to the people through sneezing, coughing, splitting, inhaling infected droplets. Oseltamivir is now drug of choice for the swine flu, but it has several side effects. The primary infection of H. influenza to the host stimulates the host immune system. Immunostimulant property of herbal drugs proved to stimulate T cell and macrophages that can be used as adjuvant therapy for Swine flu treatment to stimulate the low host immune system. This review is an attempt to discuss the role of immune-stimulant as adjuvant therapy for H1N1.