Pinellia ternata is a common ingredient in Traditional Chinese Medicine combination products. Many of these products are used for morning sickness. Pinellia ternata, along with ginger, is an ingredient in the herbal formulation Xiao-Ban-Xia-Tang (XBXT), which is used to prevent vomiting. Pinellia ternata is also used in Japanese Kampo medicine. It is an ingredient in Sho-seiryu-to (SST), which is used for the flu.
Outside of Chinese Medicine, pinellia ternata is used for nausea, morning sickness, cough, birth control, influenza (flu), swine flu, and pain and swelling (inflammation).
However, since April 2004, pinellia ternata has been banned in the US because it contains chemicals called ephedrine alkaloids. These chemicals might cause serious side effects such as heart attack, stroke, or seizures.
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