Viagra and Sildenafil tablets for Erectile Dysfunction

Sildenafil 100mg, 50mg & 25mg

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Quantity25mg50mg100mg
4 Tablets£2.99£5.99£7.99
8 Tablets7.99£11.49£14.99
12 Tablets£11.99£17.49£21.99
16 Tablets£15.99£21.99£29.99
32 Tablets£29.99£39.99£54.99
Quantity25mg50mg100mg
4 Tablets£24.99£34.99£34.99
8 Tablets£47.99£62.99£64.99
12 Tablets£68.99£89.99£94.99
16 Tablets£79.99£109.99£119.99
32 Tablets£139.99£169.99£219.99

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What are Sildenafil Tablets for Men?

Sildenafil tablets are the most commonly prescribed ingredient for the treatment of erection problems in men and are used by over 20 million men worldwide.

Sildenafil tablet is the active ingredient in branded Viagra and therefore works, in the same way, to increase the flow of blood to the penis, allowing you to achieve and maintain a firm erection throughout sexual intercourse. The tablets work effectively in the system, taking effect in under an hour and remaining active for up to four hours. Sildenafil tablets are available to buy in dosages of 25mg, 50mg, and 100mg. You can subscribe and save or opt for a one-time purchase.

What are the benefits of using Sildenafil tablets?

Erectile dysfunction (ED) can lead to, and be caused by, psychological issues such as relationship problems, depression, and performance anxiety. Performance anxiety is the most common cause of erectile issues among younger men; such is their desire to please their partner. Whilst Sildenafil can help alleviate the physiological factors behind erectile dysfunction, it’s always best to talk through any psychological problems with your partner. Known benefits of using Sildenafil include:

  • Possible increase in sexual confidence
  • Stronger, sustained erections
  • Possible improvement in self-esteem

Improving your sex life could be the kick-start you need to press on in other areas that may have been neglected due to dissatisfaction in your romantic relationships. Sometimes, sexual discontentment can lead to other psychological issues such as depression and anxiety. That’s why it’s always helpful to try and tackle the underlying issues. For more information, please refer to these useful NHS resources or speak to your doctor.

Also, it is strongly advised not to take more than one dosage in a single day.

One tablet should be taken at least 30-60 mins before intercourse, preferably on an empty stomach. The tablet will only work if you are sexually aroused. The tablets should only be taken when needed. The pill box/packet should be stored at room temperature. It is not advised to take more than one tablet in 24 hours for health reasons. 

How do Sildenafil tablets work?

Erectile dysfunction occurs when the blood flow to the penis is limited preventing a strong enough erection required for sexual activity. This is due to an abundance of an enzyme called phosphodiesterase type 5 (PDE 5). The majority of erectile dysfunction treatments are in the PDE5-inhibitor family of drugs, meaning they all work in a similar capacity. The active ingredient, Sildenafil, works by restricting the impact of this enzyme so that the blood vessels in your penis can open sufficiently. This ensures sufficient blood flow when you are aroused, ensuring you can achieve and sustain an erection for a longer duration.

How do I take Sildenafil tablets?

Sildenafil tablet is taken in the same way as Viagra. Take one pill about 30-60 minutes before sex. You can take the pill with a glass of water but do not take more than one pill within 24 hours.

Sildenafil tablets can last for up to four hours. However, this does not mean you’ll be erect throughout this period. After you climax, your penis will return to its flaccid state until the next time arousal can be achieved. Like other PDE-5 inhibitor treatments, Sildenafil tablets don’t increase your sexual desire but will enhance the strength of your erections when you do become sexually aroused.

What dosages of Sildenafil tablets are available?

Sildenafil tablets are available in three different strengths – 25mg, 50mg, and 100mg.

The recommended starting dose for Sildenafil is 50mg. For men who experience negative side effects, this can be lowered to 25mg. For men where 50mg is not effective enough, nor does it cause any unwanted side effects, then the dose can be increased to 100mg.

  • 25mg – For men known to experience frequent side effects
  • Sildenafil 50mg – The recommended starting dosage
  • 100mg – For men who have found the 50mg to be ineffective

What precautions/interactions should I be aware of with Sildenafil tablets?

Sildenafil tablets should not be taken alongside other PDE5 inhibitors such as Cialis (Tadalafil), Spedra (Avanafil), or Levitra (Vardenafil).

When taking Sildenafil citrate tablets, care should be taken when using the treatment alongside other treatments or foods. Although there are no known negative interactions between Sildenafil use and alcohol consumption, it is suggested that the user limits the amount of alcohol consumed before and after the use of the treatment as its effectiveness may be compromised.

Your diet, on the other hand, may affect the use of this treatment. The NHS indicates that ingesting grapefruit or grapefruit juice can increase the levels of free-flowing Sildenafil citrate in the blood, in addition to significantly lowering the blood pressure in the body, which could lead to an increased risk of side effects and other serious cardiac problems.

For more information about Sildenafil, please be sure to read the Product Patient Information or visit the NHS website.

What are some side effects associated with Sildenafil tablets?

Most of the side effects associated with Sildenafil tablets are mild and are unlikely to affect you. Nevertheless, it’s always helpful to know the risks before buying any prescription treatments online. Common side effects include stuffy nose, dizziness, headaches, indigestion, and facial flushing.

Certain treatments have been known to interact with Sildenafil, so always mention any current treatments/medicines you are taking during your online consultation.

At UsMen, we only sell clinically tested and approved treatments. Sildenafil is usually safe and effective for most men to use, however, it is considered unsuitable for men with certain underlying health conditions. These include heart disorders, decreased liver function, low blood pressure, and galactose intolerance.

If you’re concerned about how you’ll react to the treatment, always disclose full details of your medical history to our Clinicians, and they will be able to determine whether it is the right treatment for you.

How can I lessen the risk of side effects?

Whilst for some men, avoiding side effects will be difficult, there are certainly ways you can lower your chances of experiencing them. For example:

  • Lower your alcohol consumption – This not only lessens your chances of side effects, but excess alcohol can also dampen the efficacy of the treatment.
  • Take with food – Although most effective on an empty stomach, eating something beforehand may lower the chances of experiencing side effects.
  • Take a lower dosage – Some men find the lower 25mg dose remains effective, whilst simultaneously reducing their side effects.
  • Avoid nitrates – Nitrates similar to Sildenafil can lower blood pressure. The combination of the two can lead to dangerously low blood pressure levels and consequently a heart attack.
  • Check for drug interactions– As discussed below, it’s important to talk to your doctor if you think you might be taking something which interacts negatively with Sildenafil citrate.

How can I buy Sildenafil online UK?

To buy Sildenafil online in the UK, you need to complete a free consultation to be issued a prescription. This only takes a few minutes and allows our Clinicians to assess your medical history, and decide if Sildenafil is the best treatment for you. You can complete an online consultation by clicking here.

UsMen offers a discreet and secure ordering service, ensuring that you can buy your Sildenafil pills online with peace of mind.

Is it safe to buy Sildenafil online UK?

UsMen is a registered service with UK-certified Pharmacists and pharmacies. We can guarantee that any Sildenafil you buy online at www.usmen.co.uk is a genuine prescription medicine. Our Clinicians individually review every consultation to ensure the treatment, quantity, and dosage is safe for you to use.

Getting Sildenafil tablets delivered in the UK

Across the UK, we use Royal Mail to deliver Sildenafil tablets. Our next-day delivery is free of charge and will arrive at your chosen address the next day including Saturdays. This is on all orders completed and approved by our Doctor by 3 pm Monday to Friday. Weekend orders, including Friday evenings, will be delivered on the following Tuesday.

How do I know if it’s authentic Sildenafil?

Sildenafil will come in genuine blister packs for tablets. It is blue or white and has the medicine name and dosage engraved on the blister packs. Every medicine will come complete with the patient leaflet, which must be thoroughly read before use. At UsMen, our process includes checks from our Clinician as well as the UK-registered pharmacy to ensure the authenticity of Sildenafil.

If you are unsure in any way, you can contact our Customer Service for further validation.

What is Viagra?

Viagra is a very popular treatment for erectile dysfunction (ED) produced by the pharmaceutical company Pfizer.

It has transformed the lives of millions of men and is clinically proven to help achieve erections strong enough for penetrative sex.

The same treatment is available as the generic version – Sildenafil. Sildenafil contains the same ingredients and has identical effects – the only difference is the name and price.

As with most ED treatments, Viagra belongs to a class of medication known as PDE-5 inhibitors. Other treatments in the same class of drugs include CialisLevitra, and Spedra – each with its unique characteristics.

Please note, for any of these treatments to work, you must first become sexually aroused.

How does Viagra work?

Put simply, Viagra works by increasing blood flow to the penis.

An erection occurs when sexual arousal stimulates the brain. Your brain then initiates the body’s production of cGMP. This chemical relaxes the muscles in the penile wall, allowing the arteries in the penis to fill with blood. The result is an erection.

When you have climaxed, your body will then produce an enzyme called PDE-5. This enzyme breaks down the erection.

For some men, the PDE-5 enzyme is overly active. This prevents proper function and limits the flow of blood to the penis.

Viagra works through its active ingredient ‘Sildenafil Citrate’, which inhibits the PDE-5 enzyme for some time, meaning the arteries in the penis can fill with blood.

What dosages are available?

There are three prescribed dosages with varying strengths of 25mg, 50mg, and 100mg, all of which are available to order online with UsMen.

  • 25mg – the lowest dosage is recommended for those sensitive to higher dosages, as well as those over the age of 65
  • 50mg – this is usually recommended if you are using the treatment for the first time
  • 100mg – the strongest dosage available and only recommended if the 50mg dosage has little effect. It is also important that you have not experienced any side effects when using the 50mg dosage.

If you are unsure which strength to take, you should first consult with a doctor.

How do I take Viagra?

You should always follow the directions of your Doctor and what is detailed in the patient information leaflet (PIL).

This medication is very easy to take:

  • You should take one tablet 30-60 mins before intercourse
  • More than one tablet should not be taken within 24 hours.
  • Take tablets with a glass of water.
  • If a lower dosage does not provide the desired effect, you may have to adjust it.
  • Store the pack at room temperature away from moisture.

Please note, that the time it takes for this treatment to work varies among men. It will normally take between 30 minutes and one hour.

If this medication does not have any effect, please contact your doctor.

*Taking a dose of more than 100mg will not increase the efficacy – however, it will increase the severity of side effects. If you would like to take an impotence medication that is optimized for more frequent sexual intercourse, Cialis Daily would be a better option.

Can I take Viagra with food and alcohol?

If you eat a heavy meal (especially a fatty meal), you may find that this medicine takes a longer time to take effect. However, it is completely fine to take with meals, as long as you expect a slight delay before the effects.

Alcohol can prevent a man from achieving an erection. For this reason, it is not advised to drink heavily when taking this medication.

What are the possible side effects?

All prescription medications can cause adverse effects. Thankfully Viagra is very well-tolerated and any reactions are not normally serious.

The following are the most commonly reported (they are usually mild and not long-lasting):

  • alopecia
  • anemia
  • anxiety
  • cough
  • diarrhea
  • dizziness
  • fluid retention
  • headaches
  • increased risk of infection
  • insomnia
  • nasal complaints
  • nausea
  • night sweats
  • pain
  • skin reactions
  • stomach discomfort
  • stomach disorders
  • tremor
  • vasodilation
  • vision disorders

If you experience any of the above and it causes you distress, please stop treatment and contact your doctor.

You should also stop treatment and seek immediate medical attention if you suffer an allergic reaction, chest pain, or, painful erections. Call 999.

A full list of reactions and their frequency can be found in the patient information leaflet – this will be included with your order or you can view more information directly on the NHS website.

Who can take Viagra?

Viagra is generally suitable for any adult male with erectile dysfunction. However, it may not be prescribed and may be unsuitable for those who:

  • You have or have had cardiovascular disease e.g. heart problems, angina, or a stroke
  • have kidney or liver disease
  • You have low blood pressure or sickle cell anemia
  • have galactose intolerance
  • You have or have had renal dysfunction
  • have had a stroke in the past 6 months
  • You have severe damage/deformity to the penis
  • are already on nitrate medication

If any of these apply to you, you should contact your doctor and ask about other ED treatments – there are other options available.

What precautions should I take?

Viagra is known to interact adversely with certain drugs and substances:

  • you should avoid grapefruit – when combined with sildenafil, the fruit can cause low blood pressure
  • alcohol – excessive consumption can increase the chance of side effects occurring
  • blood pressure medications – some medications, such as Lisinopril or Amlodipine can lower blood pressure to dangerous levels
  • if you have used other erectile dysfunction treatments such as Cialis or Levitra it is recommended to wait at least 24 hours (36 hours for Cialis) before using Viagra
  • You are also using Priligy to combat premature ejaculation, you should confirm with a doctor that you are also suited to take Viagra
  • Viagra is safe to take alongside many heart medications, but it is recommended to avoid taking it with alpha-blockers or medications containing nitrates

When completing a consultation to buy Viagra online, it is important to list any medications you are taking, especially high blood pressure medications.

I always see the question "Viagra vs Viagra Connect" What is the difference?

There is no difference between the two medicines as they both have the same active ingredient, which is sildenafil citrate. It is important to remember that Viagra Connect is the over-the-counter version and is also only available in the 50mg strength.

About sildenafil (Viagra)

Sildenafil is a medicine used to treat Erectile Dysfunction.

Sildenafil is also sometimes used to treat pulmonary hypertension (high blood pressure in the blood vessels that supply the lungs).

If you have erection problems Sildenafil works by temporarily increasing blood flow to your penis when you get sexually excited.

In pulmonary hypertension, it works by relaxing blood vessels in the chest.

If you buy Sildenafil for erectile dysfunction, it can also be known by the brand names Viagra, Aronix, Liberize, Eropid, and Perrigo.

This medicine is available on prescription and you can also buy it from most pharmacies. It comes as standard tablets, chewable tablets, and as a liquid that you swallow. Click here to purchase.

Who can and cannot take sildenafil?

Who can take sildenafil?

Most men aged 18 and over can take sildenafil for erectile dysfunction.

Most adults and children aged 1 year and over can take sildenafil for pulmonary hypertension.

Who may not be able to take Sildenafil?

Sildenafil is not suitable for some people. To make sure it’s safe for you, speak to your doctor or pharmacist before taking sildenafil if you:

  • have ever had an allergic reaction to sildenafil or any other medicine
  • are taking medicines called nitrates for chest pain (angina)
  • have a serious heart or liver problem
  • You have recently had a strokeheart attack , or a heart problem – your doctor should carefully check whether your heart can take the additional strain of having sex
  • have low blood pressure (hypotension)
  • You have a rare inherited eye disease, such as retinitis pigmentosa
  • have sickle cell anaemia (an abnormality of red blood cells), leukemia (cancer of blood cells), or multiple myeloma (cancer of bone marrow)
  • have a deformity of your penis or Peyronie’s disease (curved penis)
  • have a stomach ulcer
  • have a bleeding problem like hemophilia

How and when to take Sildenafil?

It’s important to take sildenafil as advised by a doctor or pharmacist.

Dosage and strength for erectile dysfunction

Sildenafil tablets for erectile dysfunction come in different strengths ranging from 25mg to 100mg.

The usual dose is 50mg when you need it. Do not take it more than once a day.

The dose can be increased to 100mg or decreased to 25mg depending on its effect.

Take sildenafil up to 4 hours before you want to have sex. For sildenafil to work properly, you’ll need to be sexually excited.

How to take tablets

Swallow tablets whole with a drink of water or juice (but not grapefruit juice).

For erectile dysfunction, it’s best to take sildenafil on an empty stomach. It may take longer to work if you take it with food.

If you take too much

Taking too much sildenafil can cause unpleasant side effects.

Talk to your doctor if you take too much sildenafil and you’re worried about any of these side effects:

  • headaches
  • dizziness
  • indigestion
  • blocked nose
  • changes to your vision

Side effects of sildenafil

Like all medicines, sildenafil can cause side effects, although not everyone gets them.

Common side effects

Common side effects of sildenafil happen in more than 1 in 100 people.

If you’re taking it for erection problems you’re unlikely to get side effects as you’re only taking it for a short time. However, you may experience;

  • Headaches
  • Feeling sick (nausea)
  • Flushing including hot flushes
  • Indigestion
  • Stuffy nose
  • Feeling dizzy

Tell your doctor or pharmacist if the advice on how to cope does not help or if the side effects get worse.

Serious side effects

Serious side effects are rare and happen in less than 1 in 1,000 people.

Stop taking sildenafil and contact your doctor or 111 straight away if you have a sudden decrease or loss of vision.

Go to 111.nhs.uk or call 111. Call 111 if you’re worried about a child under the age of 5 years.

Immediate action required: Call 999 or go to A&E now if:
  • you or someone around you has a seizure or fit
  • you have a prolonged or sometimes painful erection, especially if it lasts for more than 2 hours

Find your nearest A&E

Immediate action required: Call 999 now if:

  • Do you get any chest pain

If this happens during or after sex and you are taking nitrates, do not take them to treat your chest pain.

Serious allergic reaction

In rare cases, it’s possible to have a serious allergic reaction (anaphylaxis) to sildenafil.

Immediate action required: Call 999 or go to A&E now if:

  • you get a skin rash that may include itchy, red, swollen, blistered, or peeling skin
  • you’re wheezing
  • you get tightness in the chest or throat
  • you have trouble breathing or talking
  • your mouth, face, lips, tongue, or throat start swelling

You could be having a serious allergic reaction and may need immediate treatment in hospital.

Other side effects

These are not all the side effects of sildenafil. For a full list, see the leaflet inside your medicine packet.

Sildenafil and fertility

There’s no clear evidence to suggest that taking sildenafil reduces fertility in either women or men.

Speak to your doctor before taking it if you’re trying to get pregnant.

Cautions with other medicines

Some medicines do not mix well with sildenafil.

Tell your pharmacist or doctor if you’re taking any of these medicines before you start sildenafil:

  • Nitrates for chest pain (angina)
  • Riociguat for pulmonary hypertension

Mixing sildenafil with herbal remedies or supplements

It’s not possible to say that herbal remedies and supplements are safe to take with sildenafil. They’re not tested in the same way as pharmacy and prescription medicines.

If you require further information on Sildenafil (Viagra) – Please visit the NHS website.

Is Sildenafil Viagra?

Viagra is the branded version of Sildenafil. They both contain the same active ingredient; sildenafil citrate and are medically the same. Sildenafil is available at a fraction of the cost. More information on Sildenafil can be found in the BNF (British National Formulary).

How long does it take to work?

Sildenafil and Viagra will take effect 30-60 minutes after taking the tablet but will only give you an erection once aroused.

How long does Sildenafil last?

Approximately 4 hours for all strengths: 25mg, 50mg, and 100mg.

What is the most popular strength of Sildenafil and Viagra?

Sildenafil 50mg tablets are the most popular strength prescribed.

Can I Buy Sildenafil 100mg UK?

Yes, you are able to buy Sildenafil 100mg UK once you have completed a questionnaire and a prescription is approved.

Can I eat and drink with Sildenafil/ Viagra?

Eating a heavy meal may reduce the effectiveness and slow down the action.

You can drink when taking Sildenafil/ Viagra but drinking alcohol can make it more difficult to get an erection.

What are the side effects of Sildenafil/Viagra?

  • Flushing
  • Headaches
  • Heartburn
  • Nasal Congestion
  • Indigestion
  • Dizziness

A full list of side effects can be found on the NHS website. If you experience any of these, call 999 immediately.

Which other names are there for Sildenafil?

Sildenafil is the generic name of the medicine. The branded alternatives in the UK ( United Kingdom) are Viagra Connect and Viagra. There are several Generic OTC sildenafil versions, the most popular being Eropid 50mg and Perrigo Sildenafil tablets. Viagra Numan and Manual also supply their generic brands of Sildenafil, however, our prices are a lot cheaper.

Kamagra vs Viagra?

Kamagra or the Ultra Blue Pill is the Indian name for Sildenafil or Viagra, it is not legally available in the UK and it is something you should refrain from purchasing. The internet is abundant with searches for Kamagra oral jelly, however, it is important to remember this is not available in the UK. 

Which generic brands are available for Sildenafil?

There are several generic manufacturers of sildenafil citrate in the UK. Accord, Dr. Reddys, Somex Pharma, and Teva Sildenafil are just a few of them and are available in 25mg, 50mg, and 100mg strengths. It is important to remember that they all contain the same active ingredient of Sildenafil Citrate and there should be no difference between the effectiveness if you switched a band.

Is there a Herbal Viagra available?

The Viagra brand name is reserved for Pfizer's version of Sildenafil and they do not have a herbal version.

Does Sildenafil make you last longer?

There is a common misconception that Viagra or Sildenafil delay ejaculation. We however do treat Premature Ejaculation for more information please click here.

Sildenafil vs Viagra Connect

Sildenafil 50mg tablets are equivalent to Viagra Connect 50mg tablets in the UK.

Where can I buy Viagra?

You can only buy Viagra and Sildenafil from Pharmacies registered with the GPHC in the UK.

Order Sildenafil Online in the UK

When ordering Sildenafil online in the UK always make sure the Pharmacy is registered with GPHC.