Products Tadalafil is commercially available in the form of film-coated tablets (Cialis, Adcirca, generics). It has been approved in many countries since 2004. Generics were registered in 2016 and came on the market in 2019. This article is related to erectile dysfunction treatment. Structure and properties Tadalafil (C22H19N3O4, Mr = 389.4 g/mol) exists as a … Tadalafil
Products Vardenafil is commercially available in the form of film-coated tablets and oral tablets (Levitra, co-marketing drug: Vivanza). It has been approved in many countries since 2003. Generic versions were approved in 2018. Structure and properties Vardenafil (C23H32N6O4S, Mr = 488.6 g/mol) is present in the drugs as vardenafil hydrochloride trihydrate, a piperazine derivative and … Vardenafil
Products Sildenafil is commercially available in the form of film-coated tablets and as a solution for injection (Viagra, Revatio, generics). It has been approved in many countries since 1998. Generics went on sale July 22, 2013, and the patent expired June 21. Pfizer launched auto-generic sildenafil Pfizer, identical to the original, back in May. In … Sildenafil
Products Avanafil is commercially available in tablet form (Spedra, some countries: Stendra). It was approved in the US in April 2012, in the EU in 2013, and in many countries in 2016. Structure and properties Avanafil (C23H26ClN7O3, Mr = 483.95 g/mol) is a pyrimidine derivative. It exists as a white crystalline powder that is practically … Avanafil