*Prices reflect U.S. average retail price

Sildenafil, sold as the brand name Viagra among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension.... Wikipedia

Manufacturer's Website: Revatio                                                                                                                       Average retail cost: $1,768/month

Tadalafil (INN) is a PDE5 inhibitor marketed in pill form for treating erectile dysfunction (ED) under the name Cialis /siˈælɪs/ see-AL-iss, and under the name Adcirca /ædˈsɜːrkə/ ad-SUR-kə for the treatment of pulmonary arterial hypertension.... Wikipedia

Manufacturer's Website: Adcirca                                                                                                                   Average retail cost: $3,799/month

Prostacyclin (also called prostaglandin I2 or PGI2) is a prostaglandin member of the eicosanoid family of lipid molecules. It inhibits platelet activation and is also an effective vasodilator. When used as a drug, it is also known as epoprostenol. It is used to treat pulmonary artery hypertension.... Wikipedia

Manufacturer's Website: Not Available                                                                                                                     Average retail cost: *

* This drug is only available at select specialty pharmacies, which usually means it may be expensive.

Prostacyclin (also called prostaglandin I2 or PGI2) is a prostaglandin member of the eicosanoid family of lipid molecules. It inhibits platelet activation and is also an effective vasodilator. When used as a drug, it is also known as epoprostenol. It is used to treat pulmonary artery hypertension.... Wikipedia

Manufacturer's Website: Veletri                                                                                                                            Average retail cost: *

* This drug is only available at select specialty pharmacies, which usually means it may be expensive.

Treprostinil (marketed under the trade names Remodulin for infusion, Orenitram for oral, and Tyvaso for inhalation) is a vasodilator that is used for the treatment of pulmonary arterial hypertension... Wikipedia

Manufacturer's Website: Tyvaso                                                                                                                         Average retail cost: *

* This drug is only available at select specialty pharmacies, which usually means it may be expensive.

Treprostinil (marketed under the trade names Remodulin for infusion, Orenitram for oral, and Tyvaso for inhalation) is a vasodilator that is used for the treatment of pulmonary arterial hypertension... Wikipedia

Manufacturer's Website: Remodulin                                                                                                                    Average retail cost: *

* This drug is only available at select specialty pharmacies, which usually means it may be expensive.

Iloprost is a drug used to treat pulmonary arterial hypertension (PAH), scleroderma, Raynaud's phenomenon and other diseases in which the blood vessels are constricted and blood can't flow to the tissues. This damages the tissues and causes high blood pressure. Iloprost works by opening (dilating) the blood vessels to allow the blood to flow through again... Wikipedia

Manufacturer's Website: Ventavis                                                                                                                     Average retail cost: *

* This drug is only available at select specialty pharmacies, which usually means it may be expensive.

Macitentan (trade name Opsumit) is an endothelin receptor antagonist (ERA) approved for the treatment of pulmonary arterial hypertension (PAH). The other two ERAs marketed as of 2014 are bosentan and ambrisentan. Macitentan is a dual ERA, meaning that it acts as an antagonist of two endothelin (ET) receptor subtypes, ETA and ETB... Wikipedia

Manufacturer's Website: Opsumit                                                                                                                              Average retail cost: *

* This drug is only available at select specialty pharmacies, which usually means it may be expensive.

Ambrisentan (U.S. trade name Letairis; E.U. trade name Volibris; India trade name Pulmonext by MSN labs) is a drug indicated for use in the treatment of pulmonary hypertension... Wikipedia

Manufacturer's Website: Letairis                                                                                                                   Average retail cost: *

* This drug is only available at select specialty pharmacies, which usually means it may be expensive.

Selexipag (brand name Uptravi) is a drug developed by Actelion for the treatment of pulmonary arterial hypertension (PAH)... Wikipedia

Manufacturer's Website: Uptravi                                                                                                                 Average retail cost: *

* This drug is only available at select specialty pharmacies, which usually means it may be expensive.

Bosentan is a dual endothelin receptor antagonist used in the treatment of pulmonary artery hypertension (PAH). It is licensed in the United States, the European Union and other countries by Actelion Pharmaceuticals for the management of PAH under the trade name Tracleer... Wikipedia

Manufacturer's Website: Tracleer                                                                                                                      Average retail cost: *

* This drug is only available at select specialty pharmacies, which usually means it may be expensive.