Clinical trial, with positive findings,  on 50 patients with accumulation of heavy fluid in the trachea  (windpipe) in an Intensive Care Unit at a university hospital in  Austria. Approximately half of the patients were randomly allocated to  receive a homeopathic medicine called Potassium dichromate; the others  received a dummy medicine (placebo). They did not know which treatment  group they were in. After 2 days, there was less accumulation of heavy  fluid in the windpipe of patients who received homeopathic treatment  than in those who received placebo.

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