Side effects due to ginger are rare when used as recommended. However, some people sensitive to the taste may experience heartburn. People with a history of gallstones should consult a doctor before using ginger.³² Short-term use of ginger for nausea and vomiting during pregnancy appears to pose no safety problems. However, long-term use during pregnancy is not recommended. A doctor should be informed if ginger is used before surgery as the herb may increase bleeding.