*Prices reflect U.S. average retail price

Vardenafil is a PDE5 inhibitor used for treating erectile dysfunction that is sold under the trade names Levitra, Staxyn, and Vivanza...Wikipedia

Manufacturer's Website: Not Available                                                                                                                            Average retail cost: $173/4 tabs

Prostaglandin E1 (PGE1), also known as alprostadil, is a naturally occurring prostaglandin which is used as a medication. In infants with congenital heart defects, it is used by slow injection into a vein to open the ductus arteriosus until surgery can be carried out. By injection into the penis or placement in the urethra, it is used to treat erectile dysfunction...Wikipedia

Manufacturer's Website: Edex                                                                                                                                   Average retail cost: $259/package

Secnidazole (trade names Flagentyl, Sindose, Secnil, Solosec) is a nitroimidazole anti-infective. Effectiveness in the treatment of dientamoebiasis has been reported. It has also been tested against Atopobium vaginae. In the United States, secnidazole is approved for the treatment of bacterial vaginosis in adult women...Wikipedia

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Manufacturer's Website: Not Available                                                                                                                       Average retail cost: $455/30 tabs

Avanafil is a PDE5 inhibitor approved for erectile dysfunction by the FDA on April 27, 2012 and by EMA on June 21, 2013. Avanafil is sold under the brand names Stendra and Spedra...Wikipedia

Manufacturer's Website: Not Available                                                                                                                   Average retail cost: $781/10 tabs

Prostaglandin E1 (PGE1), also known as alprostadil, is a naturally occurring prostaglandin which is used as a medication. In infants with congenital heart defects, it is used by slow injection into a vein to open the ductus arteriosus until surgery can be carried out. By injection into the penis or placement in the urethra, it is used to treat erectile dysfunction...Wikipedia

Manufacturer's Website: Caverject Impulse                                                                                                                Average retail cost: $317/carton

Prostaglandin E1 (PGE1), also known as alprostadil, is a naturally occurring prostaglandin which is used as a medication. In infants with congenital heart defects, it is used by slow injection into a vein to open the ductus arteriosus until surgery can be carried out. By injection into the penis or placement in the urethra, it is used to treat erectile dysfunction...Wikipedia

Manufacturer's Website: Not Available                                                                                                                Average retail cost: $588/6 suppositories

Caverject (alprostadil)

Prostaglandin E1 (PGE1), also known as alprostadil, is a naturally occurring prostaglandin which is used as a medication. In infants with congenital heart defects, it is used by slow injection into a vein to open the ductus arteriosus until surgery can be carried out. By injection into the penis or placement in the urethra, it is used to treat erectile dysfunction...Wikipedia

Manufacturer's Website: Caverject                                                                                                                           Average retail cost: $1,029/6 vials

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

Manufacturer's Website: Viagra                                                                                                                        Average retail cost: $2,770/30 tabs