#cardiac_glycoside__cardiacglycoside__cardiac_glucoside__cardiacglucoside  obtained from a number of plants and used to stimulate the heart in cases of heart failure
  supertype:  steroid  any of several fat-soluble organic compounds having as a basis 17 carbon atoms in four rings; many have important physiological effects
  subtype:  digitalis_glycoside__digitalisglycoside__digitalis__digitali__digitalin  a powerful cardiac stimulant obtained from foxglove
     subtype:  digitoxin  digitalis preparation used to treat congestive heart failure or cardiac arrhythmia
     subtype:  digoxin__Lanoxin  digitalis preparation (trade name Lanoxin) used to treat congestive heart failure or cardiac arrhythmia; helps the heart beat more forcefully

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