title: Plasma levels and negative chronotropic effect of metoprolol following single doses of a conventional and sustained release formulation.
mesh_terms: D003692:Delayed-Action Preparations; D003864:Depression, Chemical; D006339:Heart Rate / Q000187:drug effects*; D006801:Humans; D008790:Metoprolol / Q000008:administration & dosage / Q000097:blood / Q000494:pharmacology*; D011412:Propanolamines / Q000494:pharmacology*
chemical_list: D003692:Delayed-Action Preparations; D011412:Propanolamines; D008790:Metoprolol