Ginseng is one of the most popular herbal remedies for better memory, more energy, insulin production, headache relief, stress reduction, menopause relief, anti-inflammatory, immune booster, improved mood, weight loss, improved lung function, and reduced cancer risks. Among its other uses, ginseng helps bolster the immune system. If you regularly contract colds, flu and other viruses, taking ginseng as a supplement can reduce your risk and help speed up recovery time.