Pulsatilla, derived from the plant Pulsatilla pratensis or Pulsatilla vulgaris, has a longstanding history of use in traditional herbal and homeopathic medicine. Historically, practitioners in European herbalism and homeopathy have recommended Pulsatilla for a variety of mild digestive complaints, including nausea and vomiting, particularly when these symptoms are thought to be associated with emotional factors or mild, non-severe gastric upset. In homeopathy, Pulsatilla is often suggested for individuals who exhibit specific emotional patterns (such as being gentle, yielding, or weepy) and whose symptoms may improve with fresh air or gentle motion.

However, the evidence supporting Pulsatilla's efficacy for treating nausea and vomiting primarily comes from traditional and anecdotal sources, rather than from rigorous scientific studies. There are no well-conducted clinical trials or robust pharmacological studies demonstrating its effectiveness for these symptoms in the context of modern evidence-based medicine. Modern herbal references typically do not list Pulsatilla as a primary remedy for nausea or vomiting, and mainstream medical literature does not recognize it as an effective treatment for these conditions.

In summary, while Pulsatilla has traditional and homeopathic uses for nausea and vomiting, the evidence supporting these uses is weak, anecdotal, and not substantiated by scientific research.