dirt drug
n.— «Take the remarkable anti-cancer properties found in soil bacteria. It’s helping bone cancer patients at the Dana-Farber Cancer Institute in Boston. In fact, the “dirt drug,” as it’s been coined, is teamed with a more conventional medicine. And the end result is a boost in its medicinal power.» —“Couric & Co.: Seeds Of Life In The Soil” by Michelle Miller CBS News Sept. 25, 2007. (source: Double-Tongued Dictionary)