The immunomodulatory medicinal plants in pharmacognosy are relatively recent. In a number of disease situations, the immune response is impaired. Thus, either activating or inhibiting the immune response can be a valuable treatment for maintaining a disease-free state. Immunomodulators can be used for the treatment of chemotherapy. Even while the immune system iscapable of maintaining immunity and combating infections, germs and viruses can impair it.If our immune system is operating properly, we are protected against viruses and illnesses caused by a lack of immunity. Immune modulators can assist us in interfering with this process while also strengthening our immune system. Immunomodulators serve a wide range of purposes. They increase the number of white blood cells in your body and change them to fight against germs and viruses that cause sickness. Tinospora cordifolia, Asparagus racemosus, Reishi, haritaki, and other plants have been extensively studied for immunostimulant activity. They are also preventing diabetics, improves cognitive functions, heals wounds and infections.