Bacteria respond to antibiotics, but viruses do not. Because there aren't vaccines for many viruses, we're vulnerable to their health effects. However, there are simple lifestyle choices as well as medicinal herbs that have been shown to be beneficial in thwarting viral infections. Herbal antivirals play a twofold role: decreasing both the duration of an infection and the severity of symptoms, and interrupting the replication of a virus so it can't survive. Learn how these twelve herbs can boost the immune system naturally to help battle viral infections: American ginseng, andrographis, Asian ginseng, astragalus, barberry, Chinese skullcap, echinacea, elderberry, green tea, lemon balm, licorice and peppermint.