The supplements reduced vomiting by roughly 5 percent in the study, says Ryan, but very few of the patients had any vomiting due to the anti-emetic drugs they were taking.

CNN: Ginger may help chemo patients with nausea

Last year, researchers from the San Francisco Medical Examiner's Department said in New Scientist magazine that it was regular doses of antimony potassium tartrate, or tartar emetic a poisonous colourless salt which was used to make him vomit, that killed him.

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