Does Viagra Work Compared to Spedra?

Viagra and Spedra are both proven treatments for erectile dysfunction, but they work differently. Viagra contains sildenafil and has been the gold standard for over 25 years, while Spedra contains avanafil and works faster. Understanding how each medication functions can help you make an informed choice about which treatment may be more suitable for your needs and lifestyle.

  • Viagra typically works within 30-60 minutes and lasts 4-6 hours
  • Spedra can work in as little as 15-30 minutes with similar duration
  • Both require sexual stimulation to be effective
  • Generic sildenafil offers the same benefits as branded Viagra at lower cost
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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.

Viagra vs Spedra: How They Compare

How Viagra Works for Erectile Dysfunction

Viagra contains sildenafil citrate, a PDE5 inhibitor that increases blood flow to the penis when you're sexually aroused. It's been clinically proven effective for over two decades and works by blocking the enzyme that reduces blood flow. Viagra typically begins working within 30-60 minutes of taking it, with effects lasting 4-6 hours. This doesn't mean you'll have an erection for this entire time - sexual stimulation is still required for it to work.

Understanding Spedra's Mechanism

Spedra contains avanafil, which is also a PDE5 inhibitor but has a slightly different chemical structure. This allows it to work faster than sildenafil, often within 15-30 minutes. Spedra is designed to have less interaction with other enzymes in the body, potentially reducing some side effects. Like Viagra, it requires sexual arousal to be effective and lasts approximately 4-6 hours.

Effectiveness Comparison

Clinical studies show both medications are highly effective for treating erectile dysfunction. Viagra has extensive long-term data supporting its efficacy, with success rates typically ranging from 70-85% depending on underlying health conditions. Spedra demonstrates similar effectiveness rates in clinical trials, with the main advantage being faster onset of action. The choice between them often comes down to individual response and lifestyle preferences.

Side Effects and Tolerability

Both medications can cause similar side effects including headaches, facial flushing, indigestion, and nasal congestion. Spedra may cause fewer visual disturbances compared to sildenafil, though this varies between individuals. Neither medication should be taken with nitrate medications due to dangerous blood pressure interactions. A healthcare assessment is essential to determine which option may be more suitable for your health profile.

Cost Considerations

Viagra is available in both branded and generic forms. Generic sildenafil contains the same active ingredient as branded Viagra but costs significantly less while providing identical effectiveness. Spedra is a newer medication and currently only available as a branded product, making it more expensive. At EverydayMeds, patients can choose between branded Viagra and generic sildenafil during checkout, allowing flexibility based on budget and preference.

Which Treatment Might Suit You?

If speed of action is important, Spedra may be preferable due to its faster onset. However, if cost-effectiveness is a priority, generic sildenafil offers proven results at a lower price point. Many men find Viagra or sildenafil perfectly effective, especially when taken on a relatively empty stomach. The decision should be made following consultation with a healthcare provider who can assess your medical history, current medications, and individual circumstances to recommend the most appropriate treatment.

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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