title: Letter: Propranolol and digitalis.
mesh_terms: D000787:Angina Pectoris / Q000188:drug therapy*; D003864:Depression, Chemical; D004070:Digitalis / Q000494:pharmacology / Q000627:therapeutic use*; D004077:Digoxin / Q000009:adverse effects / Q000494:pharmacology; D004357:Drug Synergism; D004359:Drug Therapy, Combination; D006321:Heart / Q000187:drug effects; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008517:Phytotherapy; D010946:Plants, Medicinal; D010947:Plants, Toxic; D011433:Propranolol / Q000494:pharmacology / Q000627:therapeutic use*
chemical_list: D004077:Digoxin; D011433:Propranolol