Cycium barbarum: nourish the liver and kidneys, benefit the essence and eyesight; jujube: nourish the middle and benefit the qi, nourish the blood and tranquilize the spirit; American ginseng: nourish the qi and nourish the yin, clearing away heat and generating fluids; Astragalus: nourish the qi and strengthen the spleen, raise the yang to lift the traps, benefit the guards and fix the surface. Most of them are qi tonic drugs, especially for people who are weak and prone to colds. It should be used with caution for those with hyperactive liver yang. Control the dosage, nothing too big side effects.