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Common Adverse Events in Idiopathic or Heritable Pulmonary Arterial Hypertension (IPAH/HPAH)

The most common and dose-limiting adverse events during dose initiation and escalation (≥1%) were flushing (58%), headache (49%), nausea/vomiting (32%), hypotension (16%), anxiety/nervousness/agitation (11%), chest pain (11%), dizziness (8%), bradycardia (5%), abdominal pain (5%), musculoskeletal pain (3%), dyspnea (2%), back pain (2%), sweating (1%), dyspepsia (1%), hypesthesia/paresthesia (1%), and tachycardia (1%).

Adverse events occurring in patients with idiopathic or heritable PAH with ≥10% difference between epoprostenol and conventional therapy alone were chills/fever/sepsis/flu-like symptoms (25% vs 11%), tachycardia (35% vs 24%), flushing (42% vs 2%), diarrhea (37% vs 6%), nausea/vomiting (67% vs 48%), jaw pain (54% vs 0%), myalgia (44% vs 31%), nonspecific musculoskeletal pain (35% vs 15%), anxiety/nervousness/tremor (21% vs 9%), dizziness (83% vs 70%), headache (83% vs 33%), and hypesthesia/hyperesthesia/paresthesia (12% vs 2%).

Thrombocytopenia has been reported during uncontrolled clinical trials in patients receiving epoprostenol.

Although the relationship to epoprostenol administration has not been established, pulmonary embolism has been reported in several patients taking epoprostenol and there have been reports of hepatic failure.