<unk> (injection) is a prostaglandin analog that is FDA approved for the treatment of pulmonary arterial hypertension.   Common adverse reactions include edema, hypotension, vasodilatation, flushing, injection site pain, injection site reaction, pruritus , rash, diarrhea, nausea, jaw pain, dizziness, headache, cough, and throat irritation.
Treprostinil 
Tadalafil
Oxybutynin 
Avanafil
Vardenafil
Arbutamine
Finasteride
Gemeprost