Sildenafil Citrate vs Spedra Comparison Guide

When comparing erectile dysfunction treatments, sildenafil citrate and Spedra (avanafil) are both effective PDE5 inhibitors with distinct characteristics. Sildenafil, available as both branded Viagra and generic versions, has been trusted for over two decades. Understanding the differences in onset time, duration, food interactions, and cost can help determine which treatment may be more suitable for your individual needs and lifestyle preferences.

  • Sildenafil citrate works within 30-60 minutes and lasts 4-6 hours
  • Generic sildenafil offers significant cost savings compared to newer branded alternatives
  • Both medications require sexual arousal to be effective
  • Food consumption affects sildenafil more than Spedra
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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.

Detailed Comparison: Sildenafil Citrate vs Spedra

Understanding Sildenafil Citrate

Sildenafil citrate is the active ingredient in both Viagra and generic sildenafil tablets. As the original PDE5 inhibitor, it has extensive clinical data supporting its effectiveness in treating erectile dysfunction. EverydayMeds offers both branded Viagra and generic sildenafil options, allowing patients to choose based on their preferences and budget considerations.

How Both Medications Work

Both sildenafil citrate and Spedra belong to the same class of medications called PDE5 inhibitors. They work by blocking the phosphodiesterase type 5 enzyme, which increases blood flow to the penis during sexual arousal. Neither medication causes automatic erections – sexual stimulation is still required for effectiveness.

Onset and Duration Differences

Sildenafil citrate typically begins working within 30-60 minutes of administration and maintains effectiveness for 4-6 hours. Spedra (avanafil) generally has a faster onset time, often working within 15-30 minutes, but has a similar duration of action. The actual duration varies between individuals based on factors like age, metabolism, and overall health.

Food and Alcohol Interactions

One notable difference lies in food interactions. Sildenafil citrate can be delayed by fatty meals, which may postpone its onset of action. Spedra is less affected by food consumption, making it potentially more convenient for those who prefer not to time meals around medication. Both medications can be affected by excessive alcohol consumption, which may reduce effectiveness.

Dosage Options and Flexibility

Sildenafil citrate is available in 25mg, 50mg, and 100mg strengths, with 50mg being the typical starting dose. Spedra comes in 50mg, 100mg, and 200mg tablets. Both medications can be adjusted based on individual response and tolerability, with a maximum of one dose per 24-hour period recommended.

Cost Considerations

Generic sildenafil citrate offers significant cost advantages compared to newer branded medications like Spedra. The substantial price difference makes sildenafil citrate an attractive option for many patients, particularly those requiring long-term treatment. EverydayMeds provides transparent pricing for both generic and branded options.

Side Effects and Tolerability

Both medications share similar side effect profiles, including potential headaches, facial flushing, nasal congestion, and indigestion. Some users report that newer medications like Spedra may have slightly fewer side effects, though individual responses vary considerably. The extensive real-world use of sildenafil citrate provides comprehensive safety data.

Clinical Effectiveness

Clinical studies demonstrate high effectiveness rates for both medications. Sildenafil citrate has decades of clinical experience and real-world data supporting its efficacy across diverse patient populations. Spedra also shows excellent effectiveness rates in clinical trials, though with less long-term data available.

Choosing the Right Option

The choice between sildenafil citrate and Spedra often depends on individual priorities. Those seeking proven effectiveness at lower cost may prefer generic sildenafil citrate. Patients prioritising faster onset or reduced food interactions might consider Spedra. Consulting with healthcare providers helps determine the most suitable option based on medical history, lifestyle factors, and treatment goals.

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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