Codonopsis root is effective in boosting the health of your immune system; promoting better mental sharpness and memory, and generally as an adaptogen. This means that it can help your body in its reaction to stress. Some people say that this root is a poor man's ginseng. As with all other types of adaptogens, codonopsis root is effective in improving how your body reacts to stress. Some of the most common adaptogens in herbal medicine are ginseng and codonopsis root.