#beta_blocker__beta-adrenergic_blocker__beta-adrenergic_blocking_agent  any of various drugs used in treating hypertension or arrhythmia; decreases force and rate of heart contractions by blocking beta-adrenergic receptors of the autonomic nervous system
  subtype:  #acebutolol  #atenolol  #carvedilol  #esmolol  #metoprolol  #nadolol  #pindolol  #propanolol  #timolol
  supertype:  #blocking_agent__blocker  a class of drugs that inhibit (block) some biological process
     supertype:  #medicament__medicine__medication__medicinal_drug__medicinaldrug  something that treats or prevents or alleviates the symptoms of disease
        supertype:  #drug  a substance that is used as a medicine or narcotic
           supertype:  #agent.causal_agent  a substance that exerts some force or effect
              supertype:  #causal_agent__cause__causal_agency  any entity that causes events to happen
                 supertype:  pm#thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
                    supertype:  pm#thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type

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