Different definition / meanings for the word "viagra":

A substance that is used to treat erectile dysfunction. Viagra relaxes the smooth muscle of the penis to allow increased blood flow and erection. It belongs to the family of drugs called phosphodiesterase inhibitors. Also called sildenafil.

A medication used to treat erectile dysfunction that works by increasing the flow of blood into the penis.

A drug used in the treatment of erectile disorder; sildenafil.

The most-prescribed treatment for erectile dysfunction (ED). Viagra is the brand name for the drug sildenafil. The drug allows increased blood flow to the penis that enables a firm erection.

Sildenafil: virility drug (trade name Viagra) used to treat erectile dysfunction in men .

Sildenafil citrate, sold under the name Viagra, is a drug used to treat male erectile dysfunction (impotence), developed by the pharmaceutical company Pfizer. The pills are blue with the words "Pfizer" on one side and "VGR xx" (with xx being either 25, 50 or 100 as the dose of that pill in milligrams) on the other.

DE: Viagra® ist der Markenname für das erste Medikament der Wirkstoffgruppe der PDE5-Hemmer Sildenafil, und wird nach dem Erscheinen weiterer Präparate oft auch als Sammelbegriff verwendet. Siehe hierzu auch: Potenzmittel - Tadalafil (viagra) - Vardenafil (Levitra).----Viagra mit dem Wirkstoff Sildenafil (CAS-Nummer: 139755-83-2) ist ein Medikament, das 1998 von der amerikanischen Firma Pfizer zur Behandlung der erektilen Dysfunktion auf den Markt gebracht wurde.

IT: Il Viagra® (nome commerciale del Sildenafil, come verrà denominato nel resto dell'articolo) è un farmaco, sviluppato dalla compagnia farmaceutica Pfizer, utilizzato nella terapia della disfunzione erettile (impotenza od impotentia erigendi).

Nome commerciale di un farmaco utilizzato per curare l'impotenza. Il principio attivo è il sildenafil citrato, molecola, studiata e messa in produzione dalla casa farmaceutica Pfizer. Essa agisce sulle strutture vascolari del pene, i cosiddetti "corpi cavernosi", favorendo l'afflusso di sangue all'interno di essi e di conseguenza permettendo l'erezione.

NL: Viagra (stofnaam sildenafil) is een medicijn dat de erectie bij mannen stimuleert. Het is een product van de fabrikant Pfizer. Viagra wordt beschouwd als het eerste medicijn dat slechts het genoegen dat mensen aan het leven kunnen beleven vergroot, en niet de gezondheid verbetert.

PT: Sildenafil mais conhecido pelo seu nome comercial Viagra, é um fármaco que é usado no tratamento da disfunção eréctil no homem (impotência sexual).

ES: Viagra es el nombre comercial del fármaco usado para la disfunción eréctil (impotencia).El nombre genérico es el de citrato de sindenafilo. Desarrollada por la compañia farmaceútica Pfizer se comercializa en pastillas de color azul con la palabra 'Pfizer' en una de sus caras y VGR xx (donde xx indica la cantidad en miligramos 25, 50 o 100 unidades) en la otra.

Non-medical use

Aphrodisiac

Sildenafil is commonly and increasingly used as an aphrodisiac. While there is no clinical evidence that it has aphrodisiac activity, many seem to believe it will improve sexual performance as well as erectile function and enhance the sexual experience that will occur.

Recreational use

Viagra's popularity with young adults has increased over the years. It is sometimes used recreationally. Some users mix Viagra with methylenedioxymethamphetamine (MDMA, ecstasy) in an attempt to compensate for the side effect common to many amphetamines of erectile dysfunction, a combination known as "sextasy", "rockin' and rollin', or 'trail mix'."

History

Sildenafil was synthesized by a group of pharmaceutical chemists working at Pfizer's Sandwich, Kent research facility. It was initially studied for use in hypertension (high blood pressure) and angina pectoris (a form of ischaemic cardiovascular disease). Phase I clinical trials under the direction of Ian Osterloh suggested that the drug had little effect on angina, but that it could induce marked penile erections. Pfizer therefore decided to market it for erectile dysfunction, rather than for angina. The drug was patented in 1996, approved for use in erectile dysfunction by the Food and Drug Administration on March 27, 1998, becoming the first pill approved to treat erectile dysfunction in the United States, and offered for sale in the United States later that year. It soon became a great success: annual sales of Viagra in the period 1999–2001 exceeded $1 billion.

The British press portrayed Peter Dunn and Albert Wood as the inventors of the drug, a claim which Pfizer disputes.[4] Their names are on the manufacturing patent application drug, but Pfizer claims this is only for convenience.
Viagra is available as blue pills with a characteristic shape

Even though sildenafil is only available by prescription from a doctor, it was advertised directly to consumers on US TV (famously being endorsed by Bob Dole and Football star Pele). Numerous sites on the Internet offer Viagra for sale after an "online consultation", a mere web questionnaire. The "Viagra" name has become so well known that many fake aphrodisiacs now call themselves "herbal Viagra" or are presented as blue tablets imitating the shape and colour of Pfizer's product. Viagra is also informally known as "Vitamin V", "the Blue Pill", as well as various other nicknames.

Pfizer's worldwide patents on sildenafil citrate will expire in 2011–2013. The UK patent held by Pfizer on the use of PDE5 inhibitors (see below) as treatment of impotence was invalidated in 2000 because of obviousness; this decision was upheld on appeal in 2002.