Viagra is one of the most recognisable medicines in the world, but many people don’t realise that Viagra and Sildenafil actually contain the same active ingredient. If you’re looking for treatment for erectile dysfunction, understanding the difference can help you make the right choice.
This guide explains what sets them apart, how they work, and which option may suit you best.
What Is Viagra?
Viagra is the original branded medication for erectile dysfunction, created by Pfizer.
It contains the active ingredient sildenafil citrate, which increases blood flow to the penis to help you achieve and maintain an erection.
Viagra is available in 25mg, 50mg and 100mg strengths.
Most men find it starts working in around 30 to 60 minutes and lasts between 4-6 hours.
What Is Sildenafil?
Sildenafil is the generic version of Viagra.
It contains the same active ingredient, works in the same way, and has the same clinical effects.
When Pfizer’s patent expired, other manufacturers were able to produce sildenafil at a lower cost, provided it met strict MHRA standards. It comes in the same strengths as Viagra: 25mg, 50mg and 100mg.
Do Viagra and Sildenafil Work the Same?
Yes. Viagra and Sildenafil work in exactly the same way because they contain the same medicine.
Both:
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Increase blood flow to the penis
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Help you get and maintain a firm erection with sexual stimulation
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Start working within 30 to 60 minutes
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Last the same duration
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Have the same side effects
Studies show no difference in effectiveness between the two.
So What’s the Difference?
Price
This is the biggest difference.
Sildenafil is usually far more affordable, even though it works exactly the same as Viagra.
Packaging and Appearance
Viagra is known for its blue, diamond-shaped tablets.
Generic sildenafil can look different depending on the manufacturer, but the medicine is identical.
Branding
Viagra is the original brand that many people recognise and trust.
Sildenafil is simply the unbranded version, often preferred by those who want the same results at a better price.
Which One Should You Choose?
Most people choose sildenafil because it offers the same effectiveness for a lower cost.
You may prefer Viagra if:
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You feel more confident using the original brand
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You’ve used it before and like the consistency
You may prefer Sildenafil if:
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You want the most cost-effective option
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You’re not bothered about branding
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You want identical results for less money
From a clinical point of view, neither one is stronger or better. They are equally effective.
Who Can Take Viagra or Sildenafil?
Most men over 18 can use these medications, but they may not be suitable if you:
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Take nitrates for chest pain
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Have heart or liver problems
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Have very low or uncontrolled blood pressure
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Have certain eye conditions
Our prescribers will check your suitability during your consultation.
Final Thoughts
When comparing Viagra with Sildenafil, the real difference comes down to branding and price. The medication inside is the same, and both are proven to be safe and effective when prescribed by a licensed UK clinician.
If you’re unsure which option to choose, our clinical team can help you find the treatment that suits you best.