#alpha_blocker__alphablocker__alpha-blocker__alphablocker__alpha-adrenergic_blocker__alpha-adrenergic_blocking_agent  any of various drugs that block alpha-adrenergic receptors; used in treating benign prostatic hyperplasia; relaxes the muscles of the prostate and bladder
  subtype:  prazosin  terazosin
  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:  thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
                    supertype:  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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