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Sildenafil 25mg Tablets (Generic Viagra)

Sildenafil 25mg Tablets (Generic Viagra)

Pack Size: 4 tablets
RRP: £24.99
Saving: £10.00
Our Price: £14.99
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Age: 18 Years +

Sildenafil 25mg tablets are available to buy from The Independent Pharmacy Online Doctor by filling in a simple medical questionnaire. They are suitable for men who are suffering with erectile dysfunction and find 50mg Viagra or Sildenafil produces side effects.

Pharmacist Tip

If you smoke, quitting will help to improve your ED problems. Smoking can be the cause of reduced blood flow, which in turn can lead to erectile dysfunction.

Sildenafil 25mg 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 25mg tablets are a generic medication prodcued by many different drug manufacturers to treat erectile dysfunction (impotence). Generic Sildenafil 25mg tablets are now availble following the patent expiry on branded Viagra, allowing other companies to produced the same unbranded treatment for a fraction of the cost. The active ingredient in Sildenafil is sildenafil. Sildenafil is technically classed as a Phosphodiesterase Type 5 inhibitor (PDE-5 inhibitor). Simply put, Sildenafil 25mg tablets work by relaxing blood vessels and allowing a greater flow of blood to the penis. This increased flow will enable the penis to successfully become erect when sexually stimulated. In the majority of cases Sildenafil 25mg will take effect within thirty minutes. If the tablet is taken after eating a heavy meal that is high in fat, it can take a little longer to take effect. Sildenafil 25mg tablets will usually remain effective between four to six hours.    

Sildenafil 25mg tablets are the lowest strength of Sildenfail/Viagra available. Sildenafil 25mg tablets are normally used in patients who have experienced side effects when taking the starting dose of Sildenafil or Viagra 50mg tablets. Although they are the lowest strength treatment, Sildenafil 25mg tablets can still successfully treat ED in many patients with the lowest chance of side effects.

Sildenafil 25mg tablets should, for those whom the 50mg strength are unsuitable, 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 achieve and maintain a satisfactory erection. 



  • You should take one Sildenafil 25mg tablet 30 minutes to 1 hour before sex.
  • Sildenafil can take up to an hour to take effect in some men, although in others it can take effect in as little as 20 minutes.
  • Sildenafil can produce an effect for up to 4 – 5 hours.
  • You should never take more than tablet for erectile dysfunction (Sildenafil, Viagra, Cialis, Spedra, or Levitra) in a 24-hour period.
  • You should take Sildenafil on an empty stomach or after a low-fat meal and try to limit your alcohol intake to ensure it remains effective.

Each Sildenafil tablet contains sildenafil 25mg 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. 

Sildenafil 25mg tablets, as with all medicines has the potential to produce side-effects. Fortunately, these side effects are usually brief and mild, if experienced at all. The most common side-effects relating to Sildenafil 25mg tablets are; facial flushing and headache. Uncommon side effects can include; indigestion, a stuffy nose and a blue tint to the vision. As Sildenafil 25mg tablets are the lowest strength available, you are much less likely to experience side effects.

Sildenafil 25mg 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 25mg tablets will be safe for you to use.

Sildenafil 25mg 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 25mg tablets should not be used. Sildenafil 25 mg 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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