Nausea and vomiting of pregnancy (hyperemesis gravidarum)
Preliminary studies suggest that ginger may be safe and effective for nausea and vomiting of pregnancy when used at recommended doses for short periods of time (less than five days). Some publications discourage large doses of ginger during pregnancy due to concerns about mutations or abortion. Additional research is needed to determine the safety and effectiveness of ginger during pregnancy before it can be recommended for longer periods of time.
Motion sickness / seasickness
There is mixed evidence in this area, with some studies reporting that ginger has no effect on motion sickness, and other research noting that ginger may reduce vomiting (but not nausea). Before a recommendation can be made, more studies are needed comparing ginger to other drugs used for this purpose.
Nausea and vomiting (after surgery)
Some human studies report improvement in nausea or vomiting after surgery if patients take ginger before surgery. However, other research shows no difference. Additional studies are needed before the use of ginger before surgery to help with nausea and vomiting can be recommended.
Rheumatoid arthritis / osteoarthritis / joint and muscle pain
There is limited scientific evidence in this area, and it is not clear if ginger is beneficial.
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