With Ventavis, the most common side effects are reddening of the face caused by dilation of blood vessels (flushing), increased cough, low blood pressure (hypotension), headaches,
nausea, spasm of the jaw muscles that
causes trouble opening your mouth,
and fainting (syncope); other serious adverse events reported with the use of Ventavis include congestive heart failure, chest pain, supraventricular tachycardia, dyspnea, peripheral edema, and kidney failure.