Drug firm is creating fast-acting, inhaled Viagra

The maker of the anti-impotence drug Viagra has started work on an inhalable version that should hit the spot - so to speak - much faster than the pill form.

The pharmaceuticals company Pfizer has already tested the new version of the drug on dogs and human volunteers, and formal pharmaceutical tests are believed to be planned. "We are always keen to look at new formulations of drugs," said a spokeswoman for Pfizer, which developed Viagra from the heart drug sildenafil. "But we are trying to establish if this has any advantage over the pill form."

According to New Scientist magazine, a patent filed about 18 months ago by the scientists at Pfizer's research laboratories in Sandwich, Kent describes a new form of sildenafil that can be absorbed in water, and so could be used either as a nasal spray or other liquid form.

Such delivery methods are commonly used for fast-acting drugs, as the inside of the nose contains plenty of blood vessels with thin skin covering, allowing chemicals to migrate rapidly into the bloodstream.

Dr David Delvin, who has private clinics in London and Brighton, prescribes Viagra to 150 men. He said yesterday "This would be quite a good idea - a lot of men have difficulty because of the long delay between the time that they take Viagra and the time when it starts working."

One of the problems with the pill form is that it takes at least an hour to take effect, meaning that sex has to be carefully timed. But the delay can be even longer if the man has a full stomach - which, as Dr Delvin pointed out, can be a problem after a romantic dinner.

It could be years before a nasal spray is available, though. Even though the pill form has passed all the requirements for approval, the spray would have to start again with the standard regime of three tiers of clinical tests before it is cleared for general use.

Start your day with The Independent, sign up for daily news emails
News
Sir David Attenborough
people
Life and Style
Young girl and bowl of cereal
food + drink
News
Comic miserablist Larry David in 'Curb Your Enthusiasm'
peopleDirector of new documentary Misery Loves Comedy reveals how he got them to open up
Arts and Entertainment
Henry VIII played by Damien Lewis
tvReview: Scheming queens-in-waiting, tangled lines of succession and men of lowly birth rising to power – sound familiar?
PROMOTED VIDEO
Sport
football
Arts and Entertainment
'The Archers' has an audience of about five million
radioA growing number of listeners are voicing their discontent; so loudly that even the BBC's director-general seems worried
News
i100
Arts and Entertainment
Ready to open the Baftas, rockers Kasabian are also ‘great film fans’
musicExclusive: Rockers promise an explosive opening to the evening
Life and Style
David Bowie by Duffy
fashion
Arts and Entertainment
Hell, yeah: members of the 369th Infantry arrive back in New York
booksWorld War Z author Max Brooks honours WW1's Harlem Hellfighters in new graphic novel
ebooks
ebooksA year of political gossip, levity and intrigue from the sharpest pen in Westminster
News
advertisingVideo: The company that brought you the 'Bud' 'Weis' 'Er' frogs and 'Wasssssup' ads, has something up its sleeve for Sunday's big match
Arts and Entertainment
tv
News
i100
Environment
Dame Vivienne Westwood speaking at a fracking protest outside Parliament on Monday (AP)
environment
Life and Style
tech
Latest stories from i100
Have you tried new the Independent Digital Edition apps?
Independent Dating
and  

By clicking 'Search' you
are agreeing to our
Terms of Use.

iJobs Job Widget
iJobs General

Tradewind Recruitment: English Teacher

Negotiable: Tradewind Recruitment: This post arises as a result of the need to...

Tradewind Recruitment: Class Teacher Required ASAP In Uminster

£120 - £150 per annum: Tradewind Recruitment: I am recruiting on instruction o...

Ashdown Group: Head of Finance - Financial Director - London - £70,000

£70000 per annum: Ashdown Group: Head of Finance - Financial Controller - Fina...

Ashdown Group: Marketing Executive - Wimbledon, SW London

£24000 - £28000 per annum + benefits: Ashdown Group: Marketing Executive - Wim...

Day In a Page

Isis hostage crisis: Militant group stands strong as its numerous enemies fail to find a common plan to defeat it

Isis stands strong as its numerous enemies fail to find a common plan to defeat it

The jihadis are being squeezed militarily and economically, but there is no sign of an implosion, says Patrick Cockburn
Virtual reality thrusts viewers into the frontline of global events - and puts film-goers at the heart of the action

Virtual reality: Seeing is believing

Virtual reality thrusts viewers into the frontline of global events - and puts film-goers at the heart of the action
Homeless Veterans appeal: MP says Coalition ‘not doing enough’

Homeless Veterans appeal

MP says Coalition ‘not doing enough’ to help
Larry David, Steve Coogan and other comedians share stories of depression in new documentary

Comedians share stories of depression

The director of the new documentary, Kevin Pollak, tells Jessica Barrett how he got them to talk
Has The Archers lost the plot with it's spicy storylines?

Has The Archers lost the plot?

A growing number of listeners are voicing their discontent over the rural soap's spicy storylines; so loudly that even the BBC's director-general seems worried, says Simon Kelner
English Heritage adds 14 post-war office buildings to its protected lists

14 office buildings added to protected lists

Christopher Beanland explores the underrated appeal of these palaces of pen-pushing
Human skull discovery in Israel proves humans lived side-by-side with Neanderthals

Human skull discovery in Israel proves humans lived side-by-side with Neanderthals

Scientists unearthed the cranial fragments from Manot Cave in West Galilee
World War Z author Max Brooks honours WW1's Harlem Hellfighters in new graphic novel

Max Brooks honours Harlem Hellfighters

The author talks about race, legacy and his Will Smith film option to Tim Walker
Why the league system no longer measures up

League system no longer measures up

Jon Coles, former head of standards at the Department of Education, used to be in charge of school performance rankings. He explains how he would reform the system
Valentine's Day cards: 5 best online card shops

Don't leave it to the petrol station: The best online card shops for Valentine's Day

Can't find a card you like on the high street? Try one of these sites for individual, personalised options, whatever your taste
Diego Costa: Devil in blue who upsets defences is a reminder of what Liverpool have lost

Devil in blue Costa is a reminder of what Liverpool have lost

The Reds are desperately missing Luis Suarez, says Ian Herbert
Ashley Giles: 'I'll watch England – but not as a fan'

Ashley Giles: 'I'll watch England – but not as a fan'

Former one-day coach says he will ‘observe’ their World Cup games – but ‘won’t be jumping up and down’
Greece elections: In times like these, the EU has far more dangerous adversaries than Syriza

Greece elections

In times like these, the EU has far more dangerous adversaries than Syriza, says Patrick Cockburn
Holocaust Memorial Day: Nazi victims remembered as spectre of prejudice reappears

Holocaust Memorial Day

Nazi victims remembered as spectre of prejudice reappears over Europe
Fortitude and the Arctic attraction: Our fascination with the last great wilderness

Magnetic north

The Arctic has always exerted a pull, from Greek myth to new thriller Fortitude. Gerard Gilbert considers what's behind our fascination with the last great wilderness