Viagra

Order Viagra if you want a tried & trusted treatment for ED

This little blue pill needs no introduction and millions of men can attest to its powerful erectile effect. To order this prescription drug from us discreetly, all it takes is a quick online consultation.

Our prices

Strength Quantity Price Stock
25mg4 tablets£23.95In Stock
25mg8 tablets£43.95In Stock
25mg12 tablets£69.00In Stock
25mg16 tablets£85.99In Stock
25mg32 tablets£171.98In Stock
25mg64 tablets£343.96In Stock
50mg4 tablets£28.95In Stock
50mg8 tablets£58.95In Stock
50mg12 tablet£86.00In Stock
50mg16 tablets£112.00In Stock
50mg32 tablets£224.00In Stock
50mg64 tablets£448.00In Stock
100mg4 tablets£33.50In Stock
100mg8 tablets£63.95In Stock
100mg12 tablets£95.00In Stock
100mg16 tablets£124.00In Stock
100mg32 tablets£248.00In Stock
100mg64 tablets£496.00In Stock
Prices exclude a prescription fee. This treatment requires a quick online consultation,
which a doctor will review to determine if a prescription is appropriate.

Safe and discreet

  • Safe and regulated treatments
  • 100% discreet and confidential
  • UK qualified doctors
  • Fully registered UK pharmacy

Information

Dr Samantha Miller

Reviewed by Dr Samantha Miller MB ChB
(2017, University of Glasgow)
GMC number: 7561464

Information last reviewed 25/05/2021

About

What is Viagra?

Viagra is a treatment for erectile dysfunction (ED) which contains the drug sildenafil. In combination with sexual stimulation, it helps a man to achieve and maintain an erection for long enough to engage in sexual activity.

What is Viagra Used for?

Viagra is used for treating erectile dysfunction in men. The active ingredient in Viagra is sildenafil. Sildenafil, under the brand name Revatio, is also used to treat high blood pressure in the lungs (pulmonary hypertension).

How does Viagra work?

Viagra contains sildenafil, which belongs to a class of drugs known as PDE-5 inhibitors. These work by relaxing blood vessels and increasing blood flow to the penis. Viagra does not increase sexual desire but works when a man becomes sexually stimulated, enabling him to maintain an erection.

How effective is Viagra?

Viagra improves erectile dysfunction in more than two-thirds of men with ED, and up to 84% with higher doses. It is not uncommon to try several different types of ED medication at different doses before finding one that suits you. If you feel that Viagra is not working for you, your doctor can help you find alternatives.

Viagra and psychological ED

Often, erectile dysfunction has a psychological cause, such as anxiety or depression. In this case, counselling can be an effective treatment. This approach can take time and Viagra is often recommended for use in the short term, although it is important not to allow treatment to mask the problem.

Is Viagra safe?

When used correctly, Viagra is a safe and effective treatment for erectile dysfunction.

Ingredients

Active ingredients

The active ingredient in Viagra is sildenafil citrate.

Inactive ingredients

The inactive ingredients in Viagra are microcrystalline cellulose, calcium hydrogen phosphate (anhydrous), croscarmellose sodium, magnesium stearate, hypromellose, titanium dioxide (E171), lactose monohydrate, triacetin and indigo carmine aluminium lake (E132).

Dosage

Viagra dosage

The recommended starting dose for Viagra is 50mg, no more than once daily. Your doctor will be able to adjust your dose if you feel that it is too strong or too weak. The maximum dose is 100mg per day and increasing the dosage further than this will not increase the effectiveness of Viagra but may result in more side effects.

Starting Viagra

You can start taking Viagra at any convenient time. You may not experience the effects straight away and it is recommended that you trial Viagra on several occasions over the course of a few weeks to assess its effectiveness.

How to take Viagra?

Always take Viagra as instructed by a doctor or pharmacist, who will also instruct you on your dosage. Swallow one tablet whole with a glass of water approximately one hour before sexual activity. Viagra may take longer to work if you have just eaten a heavy or fatty meal. If you feel that your dose is too weak or too strong, your doctor may alter your dosage. Do not take Viagra more than once per day, as taking too much will increase the likelihood of experiencing side effects.

How to get an erection whilst taking Viagra?

You should aim to take Viagra about an hour before sexual activity. It takes 30–60 minutes to have an effect, typically remaining effective for 4–5 hours, with some studies showing effects for up to 12 hours post-ingestion. Once taken, you can engage in your preferred sexual activity as usual. Viagra, along with arousal and stimulation can enhance your ability to achieve and maintain an erection.

Viagra Misuse

Viagra is a convenient and effective treatment for ED but should not be overused or used recreationally. Viagra is a prescription-only medication and should only be used when prescribed to you personally by a doctor. Purchasing Viagra illegally from an unregistered source is very risky as you can never be sure of what you are taking. Viagra should never be used where it is not necessary, as improper use puts you at risk of increased side effects and dependency. 

Side Effects

Viagra side effects

Like all medications, Viagra can cause side effects. If you experience any of the following serious side effects, stop taking Viagra and seek medical help immediately:

  • Symptoms of an allergic reaction including wheezing, breathing difficulty or swelling of the face, face, lips or throat
  • Chest pain. If this occurs, sit down and try to relax. Do NOT use nitrates (e.g. sublingual GTN spray) 
  • Prolonged (>4 hours) or painful erections (priapism)
  • Sudden reduced vision or loss of vision
  • Serious skin reaction including severe peeling, swelling, blistering of the mouth, genitals or skin around the eyes, and fever
  • Seizures or fits

Headaches are the most common side effect of Viagra and affect more than 1 in 10 people.

  • Other common side effects (affecting up to 1 in 10 people) are:
  • Nausea
  • Flushing, particularly of the face
  • Indigestion
  • Visual disturbance including colour distortion and blurred vision
  • Congested nose
  • Dizziness

Uncommon side effects (affecting up to 1 in 100 people) are:

  • Vomiting
  • Skin rash
  • Eye irritation
  • Bloodshot or red eyes
  • Seeing flashes of light
  • Visual brightness
  • Light sensitivity
  • Watery eyes
  • Pounding or rapid heartbeat
  • High or low blood pressure
  • Muscle pain
  • Sleepiness
  • Reduced sense of touch
  • Vertigo
  • Ringing in the ears
  • Dry mouth
  • Blocked sinuses
  • Sinusitis
  • Upper-abdominal pain
  • Gastro-oesophageal reflux disease
  • Blood in the urine
  • Pain in the arms or legs 
  • Nosebleed
  • Feeling hot or tired

Rarely (less than 1 in 1,000 people), the following side effects may be experienced:

  • Fainting
  • Stroke
  • Heart attack
  • Irregular heartbeat
  • Temporarily decreased blood flow to parts of the brain
  • Tightening of the throat
  • Numb mouth
  • Bleeding at the back of the eye
  • Double vision
  • Abnormal sensation in the eye
  • Swelling of the eye or eyelid
  • Small particles or spots in your vision
  • Seeing halos around lights
  • Dilation of the pupil of the eye
  • Discolouration of the white of the eye
  • Penile bleeding
  • Blood in the semen
  • Dry nose
  • Swelling of the inside of the nose
  • Feeling irritable
  • Sudden decrease or loss of hearing

Contraindications

Do NOT take Viagra if you:

  • Are allergic to sildenafil or any of the other ingredients
  • Have low blood pressure
  • Have unstable heart disease or unstable angina
  • Have severe heart or liver problems
  • Have recently had a stroke or heart attack
  • Have a family history of degenerative eye diseases such as retinitis pigmentosa
  • Have ever had a condition involving loss of vision due to damage of the optic nerve from insufficient blood supply known as non-arteritic ischemic optic neuropathy (NAION)
  • Are taking nitrites e.g. for angina
  • Use “poppers” (butyl nitrate)
  • Take a guanylate cyclase stimulators (used to treat pulmonary hypertension)

You should inform your doctor and take particular care when taking Viagra if YOU:

  • Have leukaemia or multiple myeloma
  • Have problems with your heart e.g. aortic stenosis, arrhythmia, cardiomyopathy
  • Have hypertension (high blood pressure)
  • Currently have a stomach ulcer
  • Have a bleeding problem such as haemophilia
  • Have an anatomic abnormality of your penis e.g. angulation, Peyronie’s disease
  • Have sickle cell disease

Drug interactions

Before taking Viagra, tell your doctor or pharmacist if you are taking any other medications, including those purchased over the counter without a prescription. 

Do not take Viagra along with:

  • Medicines containing nitrates, e.g. glyceryl trinitrate (GTN), isosorbide mononitrate, nicorandil, amyl nitrate
  • “Poppers” which contain amyl nitrate or butyl nitrate
  • Guanylate cyclase stimulators e.g. riociguat, used to treat pulmonary hypertension

In particular, speak to your doctor if you take:

  • Other treatments for erectile dysfunction
  • Other PDE-5 inhibitors e.g. sildenafil or tadalafil for the treatment of pulmonary hypertension
  • Alpha-blockers such as doxazosin, prazosin
  • Medications used to treat HIV e.g. ritonavir
  • Anti-infective medications such as ketoconazole, itraconazole, erythromycin, cimetidine

You should also be aware that grapefruit and grapefruit juice can interfere with Viagra so you should avoid consuming grapefruit or its juice when taking Viagra. You should also avoid fruits related to grapefruits such as pomelos, tangelos and pink grapefruits etc.

Viagra and alcohol

Drinking alcohol can inhibit your ability to get an erection. In order to experience the best effects of Viagra, it is recommended that you limit the amount of alcohol that you drink.

Viagra and heavy machinery / driving

Viagra can cause dizziness and disturbances to vision. If you experience either of these side effects, avoid driving or operating heavy machinery.

Treatment Options

Lifestyle changes to improve ED

Erectile dysfunction can have both physical and psychological causes. Exercise, eating healthily, maintaining a healthy weight and not smoking can help improve underlying physical causes of ED. 

The root cause of erectile dysfunction is often psychological. Finding ways to reduce stress in your life can be extremely beneficial, as can maintaining a healthy lifestyle and exercising regularly. Anxiety may also contribute and can be further exacerbated by difficulties with sexual performance. Being open with your partner about your anxieties can often help you to relax. For advice on dealing with anxiety or depression, speak to a doctor or nurse.

Viagra vs. Viagra Connect

Viagra and Viagra Connect contain the same active ingredient, sildenafil. Viagra Connect can be purchased over the counter without a prescription and was approved to reduce the number of men purchasing Viagra from illegal sources online. Viagra Connect works in the same way as Viagra but is only available at a dosage of 50mg. Although it is prescription-free, you should consult a doctor or pharmacist before purchasing Viagra Connect.

Viagra vs. sildenafil

Viagra and sildenafil both contain the active ingredient (sildenafil) and they work in exactly the same way. Viagra is the brand name for sildenafil, the generic drug.

Viagra vs. other ED medications

Viagra is the most well-known and popular treatment for erectile dysfunction. Since it was first approved in 1998, other ED treatments that work in similar ways have been developed. Like Viagra, Cialis (tadalafil) and Levitra (vardenafil) are also PDE-5 inhibitors that work by increasing blood flow to the penis in the event of sexual stimulation. Cialis has a longer action time and can remain effective for up to 36 hours. The most recent treatment that’s been developed for ED is Spedra (avanafil), which is a fast-acting variant that can take as little as 15 minutes to become effective.

What if Viagra doesn’t work for me?

Different erectile dysfunction treatments are better suited to different people, and it is not uncommon to try a few different treatments to begin with. If Viagra does not work for you, speak to a doctor about alternative treatments for erectile dysfunction.

Q&A

Can I buy Viagra online?

Viagra can be purchased online but only from a registered pharmacy such as Dr Felix. Buying Viagra from unregistered on illegal websites can be dangerous, and you can never be sure what you are buying.

Do I need a prescription for Viagra?

In the UK, Viagra is available on prescription at a range of doses, however a 50mg version of Viagra – Viagra Connect – is available over-the-counter without a prescription.

Who makes Viagra?

Viagra is made and sold by Pfizer/UpJohn Ltd but the generic sildenafil has been produced by other companies since the patent expired in 2020.

How can I tell if my Viagra is genuine?

The best way to make sure your Viagra is genuine is to purchase it on prescription from a registered pharmacy following consultation with a doctor.

Is Viagra a cure?

Viagra is not a cure for erectile dysfunction, the root cause of which is often psychological. However, it can relieve some of the stress and worry associated with ED in the short term.

Will Viagra give me an erection for hours?

While Viagra typically remains effective for 4–5 hours after administration, and up to 12 hours, it only works in combination with sexual stimulation. If a man becomes aroused within this time period, Viagra will help him to achieve and maintain an erection. The erection will still subside in the absence of arousal. A rare side effect of Viagra is prolonged and painful erections (priapism). If this happens, stop taking Viagra and seek medical attention.

Is Viagra safe for long-term use?

Viagra is safe for long-term use, but it is important to be aware that this can lead to psychological dependency. ED often has a psychological cause, such as anxiety, depression or stress, and long-term use of treatments such as Viagra can mask these issues and prevent the user from pursuing long-term, psychological help.

Can women take Viagra?

Viagra should not be used by women, and there is little evidence to suggest that it has any effect on female libido or sexual enjoyment, and it is not licensed for this purpose. Sildenafil is used to treat pulmonary hypertension in both men and women.

Will Viagra show up on a drug test?

Viagra can stay in the bloodstream for 12 hours or more and may show up on a drug test. Drug tests tend to test for specific drugs and do not screen for the presence of every medication. Viagra would only show up on a blood test if that test is looking for evidence of Viagra or PDE-5 inhibitors.

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