#phenylephrine  a powerful vasoconstrictor used to dilate the pupils and relieve nasal congestion
  supertype:  #adrenergic_drug__adrenergic  drug that has the effects of epinephrine
     supertype:  #vasoconstrictor__vasoconstrictive  any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure
        supertype:  #agent  an active and efficient cause; capable of producing a certain effect; "their research uncovered new disease agents"
           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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