Ginger Extract Zingiber officinale gingerols shogaols Ginger, the underground stem, or rhizome, of the plant Zingiber officinale has been used as a medicine in Asian, Indian, and Arabic herbal traditions since ancient times. In China, for example, ginger has been used to aid digestion and treat stomach upset, diarrhea, and nausea for more than 2,000 years. Since ancient times, ginger has also been used to help treat arthritis, colic, diarrhea, and heart conditions. In addition to these medicinal uses, ginger continues to be valued around the world as an important cooking spice and is believed to help the common cold, flu-like symptoms, headaches, and even painful menstual periods. Native to Asia where its use as a culinary spice spans at least 4,400 years, ginger grows in fertile, moist, tropical soil. Today, ginger root is widely used as a digestive aid for mild stomach upset and is commonly recommended by professional herbalists to help prevent or treat nausea and vomiting associated with motion sickness, pregnancy, and, sometimes, chemotherapy for cancer (although the latter has not been studied). Motion Sickness Several studies suggest that ginger may be more effective than placebo in reducing symptoms associated with motion sickness. In one trial of 80 novice sailors (prone to motion sickness), those who took powdered ginger experienced a significant reduction in vomiting and cold sweating compared to those who took placebo Pregnancy Related Nausea and Vomiting At least two studies have found that ginger is more effective than placebo in relieving nausea and vomiting associated with pregnancy. In a small study including 30 pregnant women with severe vomiting, those who ingested 1 gram of ginger every day for four days reported more relief from vomiting than those who received placebo