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Sildenafil 50mg Tablets (Generic Viagra)

Sildenafil 50mg Tablets (Generic Viagra)

Pack Size: 4 tablets
RRP: £24.00
Saving: £9.01
Our Price: £14.99
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Age: 18 years +

Sildenafil 50mg tablets increase the blood flow to the penis helping to achieve and maintain a satisfactory erection. They are available from The Independent Pharmacy Online Doctor following a free 3 minute simple health questionnaire. Take action to treat your ED problems today.

Sildenafil is the name of the drug contained in the branded medicine Viagra. Now that the patent on Viagra has expired other companies may make ‘generic’ versions of the drug, however they still must receive a product licence from the MHRA ensuring their safety. Due to increased competition ‘generic’ Sildenafil is available at a much lower price but still has the same effect and quality you would expect from a branded medication.

Pharmacist Tip

Reduce alcohol consumption: As well as making your drowsy, alcohol acts to depress the central nervous system. This make you less sensitive and reduce blood flow, both of which can it harder to achieve an erection.

Sildenafil 50mg tablets are available to buy from The Independent Pharmacy Online Doctor service, following a free consultation, to help to treat erectile dysfunction in men. To find out more about erectile dysfunction and see all the available treatments, see our Online Doctor Erectile Dysfunction page.

Sildenafil 50mg tablets are a generic treatment for erectile dysfunction (ED) in men. Sildenafil was first released under the well-known brand name Viagra, the ‘blue pill’ that has become iconic in the treatment of impotence. Once the patent on Viagra expired in 2013, generic treatments could be produced by drug manufacturers at a significant discount. Each manufacturer now produces different sizes and shapes of Sildenafil 50mg tablets, however they all contain the same active ingredient and should produce the same effect. Sildenafil is a PDE-5 inhibitor that treats erectile dysfunction by relaxing the blood vessels that feed blood to the penis, causing them to widen. This dilation allows a greater flow of blood to the penis, enabling it to become successfully erect.

Sildenafil 50mg tablets are the starting dose for patients who have not taken Sildenafil or other erectile dysfunction treatments before. Sildenafil 50mg is normally sufficient strength to treat most cases of ED however, as with all ED medicines, Sildenafil isn’t always successful the first time you take it, it can take a few attempts for your body to get used to the treatment. It is recommended to take a particular dose of Sildenafil at least eight times before attempting to increase the dose or switch to a different erectile dysfunction treatment.

It’s important to note that Sildenafil does not itself cause sexual arousal, it increases; an erection cannot be achieved without the necessary sexual stimulation. To fully understand how Sildenafil 50mg tablets work, it is first necessary to understand the mechanics of an erection. When a man becomes sexually aroused, his nervous system will start to release nitric oxide into the erectile tissue of the penis. The nitric oxide interacts with an enzyme called cGMP. cGMP relaxes the smooth muscle cells of the penis, causing the arteries within to dilate and the erectile tissue to fill with blood. It is this process that results in an erection. Sildenafil 50mg tablets block the action of the chemical responsible for breaking down the enzyme cGMP. This allows for the arteries to remain dilated for longer and the flow of blood to the penis to continue. If a man isn’t sexually aroused in the first place then nitric oxide isn’t released hence no cGMP will be produced. This will result in no erection. So taking Sildenafil 50mg minus any arousal or sexual stimulation will not result in an erection or increased sexual performance.

Sildenafil 50mg tablets will, for most, resolve the symptoms of erectile dysfunction. Even if the cause is psychological, its effect can help to break the cycle of anxiety associated with being unable to achieve or maintain a satisfactory erection. 


  • You should take one 50mg tablet 30 minutes to 1 hour before sex.
  • Sildenafil can take up to an hour to take effect in some men, although it can take effect in as little as 20 minutes in some men.
  • Sildenafil can produce an effect for up to 4 – 5 hours.
  • You should never take more than tablet for erectile dysfunction (Viagra, Cialis, or Levitra) in a 24-hour period.
  • You should take Sildenafil on an empty stomach and try to limit your alcohol intake to ensure it remains effective.

Sildenafil does not always work for everyone the first time they use it. If this is the case you should not give up, guidance states that you should try Sildenafil at least 8 times before trying an alternative dose or treatment. If you find Sildenafil effective and do not experience any serious side effects you can request a repeat order via your online account. If you followed the above guidance and still find Sildenafil ineffective you may wish to increase the strength, or alternatively try a different medicine such as Cialis or Levitra. 

Each Sildenafil tablet contains sildenafil 50mg as the active ingredient.

Each tablet also contains: microcrystalline cellulose, calcium hydrogen phosphate anhydrous, croscarmellose sodium, megnesium stearate, poly(vinyl alcohol), titanium dioxide (E171), macrogol 3350 & talc. 

If you do experience side effects from Sildenafil they may include headache, flushing, light headedness and rarely a stuffy nose or indigestion. Sildenafil has a small risk of nausea, vomiting, diarrhoea, and skin rash as with all medicines. Please read the Patient Information Leaflet enclosed with your medicines for a full list of side effects.

If you experience any adverse effects from taking your prescribed medicine it is important to let us know immediately. Please log in to your online account and message one of our healthcare professionals or alternatively call us on 0117 971 1603. In a medical emergency you should contact the emergency services or go straight to your local Accident & Emergency.

Sildenafil 50mg tablets may not be suitable if any of the following apply:

  • You suffer from heart disease or heart rhythm problems
  • You have had a heart attack or stroke within the last six months
  • You have high or low blood pressure
  • You suffer from liver or kidney disease
  • You are a haemophiliac
  • You suffer from sickle cell anaemia or leukaemia
  • There is a physical deformity of the penis
  • You suffer from retinitis pigmentosa
  • You have a stomach ulcer

If any of the above apply, it is important to let your prescriber know so they can judge whether Sildenafil 50mg tablets will be safe for you to use.

Sildenafil 50mg tablets can slightly lower the blood pressure. For most men this isn’t a concern. However, this effect on blood pressure can be exaggerated if Sildenafil is taken with a nitrate drug, such as Isosorbide or Glyceryl Trinitrate (GTN). If taking nitrate drugs then Sildenafil 50mg tablets should not be used. Sildenafil 50mg tablets should be used in caution if combined with alpha blockers due to the potenial hypotensive effects.   


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All our orders are sent out using Royal Mail. Tracking is available on all orders. We always aim to dispatch all orders within 24 hours of them being received, if we are unable to meet this high standard for whatever reason we will always contact you to advise you of the delay.

We offer free UK standard delivery on orders over £40.

The following delivery options are available:

  • Standard Delivery - 2/3 day delivery - £2.95
  • Express Delivery - 1/2 day delivery - £4.45
  • Special Delivery (Guaranteed before 1pm) - £8.95
  • Saturday Guaranteed before 1pm - £10.45

The cut-off for same day dispatch of orders is 4pm. Orders processed after this time will be dispatched the following working day. Orders are dispatched Monday - Friday. Orders will not be processed on weekends or bank holidays.

We ensure all deliveries are in plain packaging for discreet delivery of your medicines and pharmacy goods.

Deliveries containing pharmacy-only or prescription medicines may require a signature on receipt. 

Delivery is free for all NHS prescriptions.

Please note: Royal Mail do not deliver on Sundays or Bank Holidays - this should be taken into account when ordering. 


We are currently unable to ship orders outside of the UK.

The Independent Pharmacy is an online pharmacy and online doctor service is owned and operated by ABSM Healthcare Ltd (Company Reg. 08515600) and Red Label Medical Ltd (Company Reg. 08676338). All information that appears on this website is intended for information purposes only and should be used to supplement, not replace, your relationship with your local healthcare professionals. You should consult your doctor if you think you may have a health problem or before you start taking a new medicine. Please ensure you always read the information leaflets supplied with any medicinal products.For more information see our policies and terms and conditions at the bottom of every page. © 2014 ABSM Healthcare Ltd. All rights reserved.
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