As with so many other bacterial, viral or fungal infections, green tea is praised for its ability to treat histoplasmosis. The high concentration of antioxidants found in green tea, including catechins and epigallocatechins, can stimulate the immune system and seek out those fungal spores in the respiratory tract that are causing the flu-like symptoms and immune system vulnerability. Green tea can also be consumed 3-4 times per day, providing an extended and intense burst of antioxidants that can quickly wipe out any infection attacking your body.