Herbal teas have a wide variety of uses, and if you are suffering from Legionnaire’s disease, these teas can be ideal complementary treatments to more aggressive antibiotic treatments. Herbal teas like green tea, catnip, marigold and echinacea can help to counter the symptoms of Legionnaire’s disease, such as a weakened immune system, low energy levels, fever and high anxiety levels. Along with helping to treat the peripheral symptoms, many herbal teas possess antioxidant compounds that can strengthen the immune system and eliminate the underlying infection causing Legionnaire’s disease.