<unk>  is an endothelin receptor antagonist that is FDA approved for the {{{indicationType}}} of pulmonary arterial hypertension. There is a Black<unk> x Warning for this drug as shown here.  Common adverse reactions include edema, hypotension, palpitations, flushing, and headache.
Bosentan
Macitentan
Ambrisentan
Sitaxentan
Iofendylate
Bepotastine Besilate
Sildenafil
Alprostadil 