Viagra vs Sildenafil: Strength Comparison Guide

When considering erectile dysfunction treatment, understanding the differences between Viagra and sildenafil can help you make an informed choice. Both medications contain the same active ingredient but differ in cost and branding. EverydayMeds offers both branded Viagra and generic sildenafil options, allowing patients to choose based on their preferences and budget after completing our clinical assessment.

  • Both Viagra and sildenafil contain identical active ingredients
  • Generic sildenafil offers significant cost savings compared to branded Viagra
  • Standard dosages available: 25mg, 50mg, and 100mg for both options
  • Clinical consultation required to determine appropriate strength and suitability
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Not sure which one? Here's the honest comparison.

Sildenafil
~60 min
~4 hrs
you like to plan ahead
Tadalafil (as-needed)Most prescribed
~30 min
up to 36 hrs
you want a whole weekend covered
Tadalafil Daily
always active
continuous
you never want to think about timing
Vardenafil
~15–30 min
~8 hrs
you want the fastest onset

How ED treatment works in your body.

Increases blood flow

Increases blood flow

When PDE5 is suppressed, blood is able to flow more freely through the body—including to the (you guessed it) penis.

Increase erections

Increase erections

More blood flow to the penis means harder, more satisfying erections once you're sexually stimulated.

Understanding Viagra and Sildenafil Strength Options

What's the Difference Between Viagra and Sildenafil?

Viagra is the original branded medication manufactured by Pfizer, whilst sildenafil is the generic equivalent containing the same active ingredient - sildenafil citrate. Both work identically as PDE5 inhibitors, increasing blood flow to help achieve and maintain erections when sexually aroused. The primary differences lie in cost and packaging, with generic sildenafil typically costing significantly less than branded Viagra.

Available Strengths and Dosing Guidelines

Both Viagra and sildenafil are available in three strengths: 25mg, 50mg, and 100mg tablets. The typical starting dose recommended by UK prescribers is 50mg, taken approximately 30-60 minutes before sexual activity. Depending on effectiveness and tolerability, your prescriber may adjust this to 25mg (lower dose for those experiencing side effects) or 100mg (maximum recommended dose). It's crucial to never exceed one dose in any 24-hour period.

Effectiveness Comparison: Branded vs Generic

Clinical studies consistently demonstrate that generic sildenafil provides identical effectiveness to branded Viagra. Both medications must meet stringent MHRA regulations ensuring bioequivalence, meaning they're absorbed and work in exactly the same way. The choice between branded and generic often comes down to personal preference and budget considerations. Some patients prefer the reassurance of the original brand, whilst others appreciate the significant cost savings of generic alternatives.

Cost Considerations and Value for Money

Generic sildenafil typically costs considerably less than branded Viagra, sometimes up to 70% cheaper for equivalent treatment. This cost difference can be particularly significant for ongoing treatment, where monthly expenses may vary substantially between options. At EverydayMeds, we believe patients should have choice, which is why we offer both branded and generic options during checkout following successful clinical assessment.

How to Choose the Right Strength

Determining appropriate dosage requires professional medical assessment. Factors influencing strength selection include age, overall health, current medications, severity of erectile dysfunction, and previous treatment response. Our UK-licensed prescribers evaluate these factors during consultation to recommend optimal starting doses. Many patients find 50mg effective, though some may require adjustment based on individual response and tolerability.

Safety Considerations for All Strengths

Regardless of whether you choose Viagra or sildenafil, certain safety considerations apply to all strengths. Both medications are contraindicated with nitrate medications (commonly used for chest pain), as this combination can cause dangerous blood pressure drops. Additionally, those with severe heart conditions, recent stroke or heart attack, or severe liver problems may not be suitable candidates. Our clinical assessment process identifies potential contraindications before treatment recommendation.

Getting Started with Treatment

Beginning erectile dysfunction treatment involves completing a comprehensive medical questionnaire reviewed by our qualified prescribers. This assessment determines suitability and appropriate starting strength based on individual circumstances. Once approved, patients can choose between branded Viagra or generic sildenafil during checkout, with both options dispatched discreetly to your preferred address. Treatment effectiveness should be evaluated after several attempts, allowing time for optimal response assessment.

What you need to know about erectile dysfunction

It's one of the most common conditions we treat, and one of the most treatable.

What is Erectile Dysfunction?
ED means finding it hard to get or keep an erection firm enough for sex. It's not unusual to have an off night; the point at which it's worth doing something is when it's happening regularly, or when it's starting to bother you.
How will I feel when I take ED medication?
For most men, nothing feels different day to day. The medication works in the background — when you're sexually aroused, it helps blood flow where it's needed, so erections come more easily and last longer. It doesn't cause arousal on its own. Some men notice mild, short-lived effects like a headache, facial flushing or a stuffy nose, which usually pass as the dose wears off.
Why do I need a prescription for ED medication?
ED treatments are prescription-only medicines in the UK because they aren't suitable for everyone — for example, alongside certain heart conditions or medications like nitrates. That's why we ask you to complete a short online consultation first. A UK-registered prescriber reviews your answers to make sure your chosen treatment is safe and right for you before it's dispensed.
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