This page is for informational purposes only


Available in multiple pack sizes

Brand May Vary
  • Generic viagra tablets
  • For erectile dysfunction (ED) and impotence
  • Helps you get and maintain an erection
  • Always read the patient information leaflet before use
Upon completion of a medical consultation with one of our health care professionals you can expect prices to start from £8.99
Prescription Included
Consultation Included
Treatment Included
All inclusive price starts from £8.99

The treatment is inclusive of consultation, private prescription & medicine delivery

Product Data

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  • Manufacturer
    Brand May Vary
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Checked for Accuracy by James O'Loan . CEO & Prescribing Pharmacist . on 20/09/2021

What is sildenafil?

Sildenafil is a medication that can treat erectile dysfunction, helping you to get and maintain an erection during sex. Sildenafil is the active ingredient in Viagra, which means that this medication works in the same way as the branded product, and is just as effective. If you’re looking for a way to treat your premature ejaculation and help to keep an erection, sildenafil could be the ideal treatment for you.

How to take this medication

You should follow the dosage and any instructions given to you by your doctor when taking this product. The usual dose you’ll be given to begin with is 50mg of sildenafil, but this may be increased or reduced by your doctor depending on how you react to the medication. Take your tablet around an hour before you are planning on having sex, and swallow whole with a glass of water. You can take this product with food, but be aware that it may take longer to work if you have eaten a heavy meal. You will need to be sexually stimulated for sildenafil to work, just as you would to obtain an erection without taking this medication.

How will sildenafil treat my erectile dysfunction?

Sildenafil is an active ingredient which is part of a group of medications called phosphodiesterase type 5 (PDE5) inhibitors. It treats erectile dysfunction by relaxing the blood vessels in your penis, making it easier for blood to flow to the area. This makes it easier for your penis to get the blood flow it needs to become erect and stay erect.

Why do I have erectile dysfunction?

Lots of men suffer from erectile dysfunction at one point or another, and it’s much more common than you may think. Erectile dysfunction is also known as impotence or ED, and it means that you struggle to get or maintain an erection during sex. There are lots of potential causes for ED, including:

  • Emotional or psychological problems, e.g. stress, anxiety, depression
  • Hormonal problems
  • High blood pressure, high cholesterol, narrowed blood vessels in your penis
  • The side effects of some medications
  • Drinking too much alcohol
  • Some medical conditions

Can I take this product if I’m taking any other medication?

If you’re taking any other medication, you should speak to your doctor or pharmacist before taking this product. Do not take sildenafil if you are already taking:

  • Medicines called nitrates, which are often used for chest pain or angina
  • Any medications known as nitric oxide donors, e.g. amyl nitrate (also known as poppers)
  • Riociguat, which is used to treat high blood pressure in the lungs

Speak to your doctor before taking this product if you are taking:

  • Protease inhibitors, which are used to treat HIV
  • Alpha-blockers, which are used to treat high blood pressure
  • Any other erectile dysfunction treatments
  • Any other medications

Can I drink alcohol while I’m taking Sildenafil?

You should not drink alcohol while taking sildenafil, as it can affect your ability to get an erection.

Can I drive after taking this product?

You may feel dizzy after taking sildenafil. If you experience this or any other side effect that affects your awareness, do not attempt to drive or operate any tools or machinery until you are absolutely certain that you are safe to do so.

Can women take this product?

Women should not take sildenafil, as it should only be taken by men with erectile dysfunction. If you are not sure whether you can take this product, speak to your doctor or pharmacist for advice.

When should this medication not be used?

Do not take sildenafil if you are under the age of 18. This product should not be taken by women. Do not use this product if you are allergic to sildenafil or any of the other listed ingredients. Do not take this product if you have:

  • Severe heart or liver problems
  • Recently had a stroke or heart attack
  • Low blood pressure
  • Certain rare inherited eye diseases, e.g. retinitis pigmentosa
  • Loss of vision due to non-arteritic anterior ischaemic optic neuropathy (NAION)

Speak to your doctor or pharmacist before taking this product if you have:

  • Deformity of the penis or Peyronie’s disease
  • Heart problems
  • A stomach ulcer, or bleeding problem, e.g. haemophilia
  • Sudden decrease or loss of vision
  • Liver or kidney problems
  • An intolerance to some sugars, as this product contains lactose

Does sildenafil have side effects?

Like all medications, sildenafil can have side effects, although not everyone will experience them. If you experience any of the following side effects, stop use and seek medical assistance immediately:

  • Symptoms of an allergic reaction, e.g. wheezing, difficulty breathing, dizziness, swelling of face, mouth, tongue, or throat
  • Chest pains – if this happens to you, get into a semi-sitting position and relax. Do not take nitrates
  • Prolonged and sometimes painful erections – if your erection lasts for over 4 hours, speak to your doctor right away
  • Sudden decrease or loss of vision
  • Serious skin reactions, e.g. severe peeling, swelling, blistering of the mouth, genitals, or around the eyes, fever
  • Seizures or fits

Other common side effects you may experience include:

  • Headache
  • Nausea
  • Facial flushing
  • Hot flush
  • Indigestion
  • Colour tinge to your vision
  • Blurred vision
  • Visual disturbance
  • Stuffy nose
  • Dizziness

For a complete list of potential side effects, please see the patient information leaflet included with your medication. If you experience these or any other side effects, stop use and speak to your doctor or pharmacist. For more information about reporting the side effects of medication, please see the MHRA’s Yellow Card Scheme.

Do I need a prescription for Sildenafil?

You do need a prescription for this Sildenafil product in the UK. Our healthcare professionals can provide prescriptions if they think this treatment would be right for you and your condition. When you click the button which reads “Start Consultation” at the top of this page, you’ll see a short questionnaire set up by our healthcare team which is designed to help them understand your medical needs. Just like an in-person consultation with your GP, our doctors will assess your answers to their questions and write a prescription for the treatment they think will be best for you. You’ll then be able to pay for your medication and we’ll send it out to you quickly and in discreet packaging.

How to store this product

Store in a cool, dry place which is below 30 degrees C. Do not use this product if the expiry date printed on the original packaging has passed. Keep out of sight and reach of children.

Important information

This product is a medicine; make sure to speak to your doctor or Chemist4U pharmacist before taking this product if you have an underlying medical problem or are taking any other medicine or complementary therapy. If your symptoms get worse or continue after taking this product, contact us or your doctor. For medical services in your area, please refer to

If you are pregnant, trying to become pregnant, or breastfeeding, speak to your doctor or our pharmacist before taking this product. If you suffer from any allergies, ask your doctor or our pharmacist if this medicine is right for you.

Store all medicines out of sight and reach of children.

Please read the included leaflet carefully before using this product.

Please contact your GP if appropriate regarding this product.

Helpful Advice on Medication Restrictions & Addiction

For further information on our medication restrictions policy, please click here.

If you are concerned about addiction to 'over the counter' medication, we urge you to visit the below links for professional help and advice:

NHS Help & Advice on Drug Addiction

Talk To Frank - Drug Addiction Help & Support

Active Ingredients

  • Sildenafil


  • The active substance is sildenafil. Each film-coated tablet contains sildenafil citrate equivalent to 25 mg, 50 mg or 100 mg of sildenafil.

    The other ingredients are:

    Tablet Core: Microcrystalline cellulose, Calcium hydrogen phosphate dihydrate, Croscarmellose sodium, Hypromellose & Magnesium stearate.

    Film Coat: Hypromellose 6cP, Titanium Dioxide (E171), Triacetin & Indigo carmine Aluminum lake (E132).

Product Data
Active Ingredient(s)
Brand May Vary

Erectile Dysfunction (ED) Treatments Explained

Erectile dysfunction is one of those conditions that people just don’t want to talk about.

We get it, it’s not the kind of topic you want to bring up with your mates over a pint, but if you did you might be surprised at how many people suffer with ED!

That’s why we’re taking the time to look at the different treatments for ED, and how they can help you to get things back to how they should be.

Erectile Dysfunction and Its Causes

Erectile dysfunction (also known as ED) is more common than you might think, possible because a lot of people who suffer with it don’t want to talk about it! 

Studies have shown that 4.3 million men in the UK alone suffer with symptoms of ED, so don’t worry guys, you’re in good company!

Today, we’re going to be looking at what ED and its causes, so we can try to work out what’s going on in an embarrassment free zone!

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Shipping Costs

Free UK Delivery on all orders over £30* - Delivery within 3-5 working days

Standard UK Delivery - £2.95* - Delivery within 3-5 working days

Next Day UK Delivery - £4.95** - Delivery within 1 working day

Temperature Controlled Delivery - £8.85 - Delivery within 1-3 working days

Please Note: These prices are shown as a guide only. All delivery times are approximate but have been obtained in good faith.

*Excluding refrigerated products and treatments which are subject to different postage charges.

Discreet Delivery

All our items are sent completely discreet for your peace of mind.

This means the packaging is plain, there is no mention of what product is inside your package and there is no mention of Chemist4U either.

We respect that many of our products are of a sensitive nature - this is why we take every step to keep your purchases private.

Returns Information

Customers can read our full returns policy by clicking here

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