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  • Viagra was the UK's first erectile dysfunction treatment
  • Viagra is effective for up to 4 or 5 hours
  • Viagra works by relaxing the blood vessels to the penis

Viagra (sildenafil) UK based online prescription tablets

If you have erectile dysfunction, Viagra (sildenafil) could help improve your sex life. To buy Viagra online, complete a short consultation.

Strength i

Generic or branded i

In Stock

Other common treatments



From £44.00

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From £28.00

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Levitra 5Mg

From £40.00

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Spedra 100Mg

From £45.00

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Our Doctor Says...

Doctor Phelan Profile

Viagra is the best known medicine for erectile dysfunction, and should be taken around an hour before sexual activity. Sexual stimulation is needed for it to work. It can remain effective for up to 4-5 hours.

Dr. Alex Phelan Pharmacy2U Online Doctor

Dr Phelan is registered as a doctor in the UK with the General Medical Council. Their registration number is 6150198. You can verify their registration on the GMC website.

More information about Viagra (sildenafil) UK based online prescription tablets

Frequently asked questions

You should avoid alcohol if you're taking Viagra, or any other brand of sildenafil. Even though you might feel that it helps to lower your anxiety, alcohol can be a contributing factor to erection difficulties in itself, so it'll potentially counteract the beneficial effects of the Viagra. Also, Viagra and alcohol can both lower your blood pressure, and this is even more likely to happen if you take both at the same time. If this gets too low it can be potentially dangerous as you could experience light-headedness, fainting, headaches and heart palpitations.

Viagra is a prescription-only drug which you can obtain through our Online Doctor service if it's suitable for you. To get started all you need to do is complete a short online consultation which will be reviewed by a UK registered doctor. There is also a non-prescription version called 'Viagra Connect', containing 50mg sildenafil per tablet. This is available from our sister company Chemist Direct at

Viagra is the most well-known brand name associated with erectile dysfunction treatments. Sildenafil is the name of the active ingredient within Viagra tablets. You can also be prescribed sildenafil as a non-branded (generic) medicine, which is available in the same strengths and works in exactly the same way.

There's no specific cure for erectile dysfunction, because there are many potential underlying causes; including obesity, diabetes, high alcohol intake, smoking, blood pressure and cholesterol status, general circulatory health, nerve damage, hormone levels, as well as psychological factors. It's more common in men over the age of 40, primarily because these factors listed above become more likely with increasing age. Medicines are available that can help for many men, such as Viagra, however these can sometimes take a few attempts before their effect becomes significant. Living a healthy lifestyle, losing weight, stopping smoking and excessive drinking, taking exercise, and effectively managing any other long term medical conditions will also help.