When it comes to boosting the immune system, there are few substances that compare to the herb astragalus. It is widely used throughout Europe and Asia to strengthen the body's resistance to disease and shorten the duration of several types of infections, including the common cold and hepatitis. It works by increasing the body's production of interferon, a powerful antiviral compound.
Hundreds of scientific studies have been done on astragalus, most recently on its ability to improve heart function. Other studies have confirmed its successful use in the treatment of heart attack, high blood pressure and coronary heart disease. Chinese doctors learned long ago that astragalus potentiates the many positive effects of ginseng, and they routinely use the two herbs together in formulas designed to increase energy, overall health and longevity.
For ongoing immune support, I recommend 50 to 100 milligrams of Chinese astragalus every day. This is particularly important during the flu season, or if you're prone to any other type of infection.