Ginger is an underground stem widely used not as a cooling spice, but also for its medicinal properties. It has been used as a medicine in Asian, Indian, and Arabic herbal traditions since ancient times. Today, ginger root is widely used as a digestive aid for mild stomach upset and is recommended to help prevent or treat nausea and vomiting associated with motion sickness, pregnancy, and cancer chemotherapy. It is also used to alleviate inflammatory conditions such as arthritis. The root stimulates digestion and boosts circulation, respiration, and nervous system function. By increasing circulation, it also has a cleansing effect on the skin, bowels, and kidneys. It further eases congestion in the throat and lungs, relieving symptoms of cold and flu, and helps alleviate menstrual discomfort.

The medicinal properties of ginger are currently being studied to determine its effects in reducing heart disease and cancer. According to preliminary studies, ginger may lower cholesterol and prevent the blood from clotting, which would lead to a decreased occurrence of heart attack or stroke.

The intake of ginger does not pose any risks, and is therefore often preferred over conventional prescription and non-prescription medicines that may cause undesired side effects. However, it is important not to take too much ginger (in general, ginger intake should not exceed 4 grams per day) as two of its components, gingerol and zingerone, have an irritant effect.

Ginger may be taken in extracts, tinctures, capsules, and oils. Fresh ginger root can also be purchased and prepared as a tea.