Sulprostone, a P1/EP3 prostanoid receptor agonist, participated in trials for ending pregnancy after fetal death between 14 and 42 weeks gestation. This drug was also studied for treating severe atonic postpartum hemorrhage after vaginal delivery and for management of retained placenta. Moreover, recent investigations have revealed, that sulprostone could be a valuable drug candidate in the therapy of many pathophysiological states, including ulcerative colitis, glaucoma, and bone healing.

Fenprostalene is a long-acting PGF2 alpha analog. Fenprostalene is indicated for use in feedlot heifers to induce abortion when pregnant 150 days or less, for the induction of parturition in sows and gilts pregnant at least 112 days.

Prostalene is an analogue of prostaglandin PGF-2 alpha. It is used for the control of estrus in mares.

Ornoprostil is a methyl derivative of PGE1 with anti-ulcreative properties developed in Japan. It is a prostaglandin E1 receptor agonist.

Alfaprostol is a synthetic analogue of prostaglandin F2α. Its activity is similar to that of the endogenous PFG2α, causing luteolysis. Alfaprostol is recommended for use in the cow, sow and mare.

Beraprost is a stable, orally active prostacyclin analogue. Beraprost acts by binding to prostacyclin membrane receptors ultimately inhibiting the release of Ca2+ from intracellular storage sites. This reduction in the influx of Ca2+ has been postulated to cause relaxation of the smooth muscle cells and vasodilation. Beraprost is indicated for the treatment of pulmonary hypertension and improvement of ulcers, pain & feeling of coldness associated with chronic arterial occlusion. In addition beraprost displays thyroid hormone receptor antagonistic properties.

Gemeprost is a PGE1 analogue indicated for softening and dilatation of the cervix uteri prior to operative procedures or therapeutic abortion. The drug is marketed under the name Cervagem.

Arbaprostil (15(R)-15-methylprostaglandin E2) is a prodrug, which is activated by epimerization to form the active S-epimer. It was shown, that arbaprostil markedly accelerated the healing rate of active duodenal ulcers, due to inhibition of acid secretion as well as gastric cytoprotection.

Tafluprost acid is a prostanoid selective FP receptor agonist that is believed to reduce the intraocular pressure (IOP) by increasing the outflow of aqueous humor. Studies in animals and humans suggest that the main mechanism of action is increased uveoscleral outflow. A prostaglandin analogue ester prodrug used topically (as eye drops) to control the progression of glaucoma and in the management of ocular hypertension. Tafluprost was approved for use in the U.S. on February 10, 2012. Tafluprost, preserved and preservative-free formulations, received marketing approval for the reduction of elevated intraocular pressure (IOP) in open-angle glaucoma and ocular hypertension in several European and Nordic countries as well as Japan, and some other Asia Pacific markets.

Treprostinil (marketed under the trade names Remodulin for infusion) is a vasodilator that is used for the treatment of pulmonary arterial hypertension. Pulmonary arterial hypertension (PAH) is a disease in which blood pressure is abnormally high in the arteries between the heart and lungs. PAH is characterized by symptoms of shortness of breath during physical exertion. The condition can ultimately lead to heart failure. Treprostinil is a potent oral antiplatelet agent. The major pharmacologic actions of treprostinil are direct vasodilation of pulmonary and systemic arterial vascular beds and inhibition of platelet aggregation. In animals, the vasodilatory effects reduce right and left ventricular afterload and increase cardiac output and stroke volume. Other studies have shown that treprostinil causes a dose-related negative inotropic and lusitropic effect. No major effects on cardiac conduction have been observed. Treprostinil had high affinity for the Prostaglandin D2 receptor (DP1), Prostaglandin E2 receptor EP2 subtype (EP2) and Prostaglandin D2 receptor (IP) receptors (Ki 4.4, 3.6 and 32 nM, respectively), low affinity for EP1 and EP4 receptors and even lower affinity for EP3, Prostaglandin F (FP) and thromboxane (TP) receptors. Treprostinil has demonstrated a unique effect on PPAR gamma, a transcription factor important in vascular pathogenesis as a mediator of proliferation, inflammation and apoptosis. Through a complementary, yet cyclic AMP-independent pathway, treprostinil activates PPARs, another mechanism that contributes to the anti-growth benefits of the prostacyclin class.