The foxglove plant is the main source of this medicine used as a stimulant  in damaged heart tissue
The 
animals were given the drugs for seven days, and then their heart tissue was .... 
Request content evidence sources  NHS Direct legacy enquiries... [DOC] [TLE] Digitalis - Wikipedia [PAR] Digitalis is a genus of about 20 species of herbaceous perennials, shrubs, and 
biennials ...