Viagra 100mg vs Spedra: Expert Comparison Guide

Choosing between Viagra 100mg and Spedra for erectile dysfunction treatment requires understanding how these medications differ. Both are effective PDE5 inhibitors, but they have distinct characteristics regarding onset time, duration, and food interactions. This comparison examines the key differences to help inform your treatment decision. EverydayMeds offers both branded Viagra and cost-effective generic sildenafil options following clinical assessment.

  • Viagra 100mg typically works within 30-60 minutes and lasts 4-6 hours
  • Spedra works faster (15-30 minutes) but has shorter duration (3-4 hours)
  • Food affects Viagra more than Spedra, especially fatty meals
  • Both require prescription and clinical assessment in the UK
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Not sure which one? Here's the honest comparison.

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

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: Viagra 100mg vs Spedra

How These Medications Work

Both Viagra 100mg (sildenafil) and Spedra (avanafil) belong to the PDE5 inhibitor class. 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 Time and Duration

Spedra generally works faster than Viagra 100mg, with effects potentially noticeable within 15-30 minutes compared to Viagra's typical 30-60 minute onset. However, Viagra 100mg may last longer, with effects persisting for 4-6 hours versus Spedra's 3-4 hours. Individual response varies, and some men may find one medication suits their lifestyle better than the other.

Food and Alcohol Interactions

Spedra has less interaction with food compared to Viagra 100mg. Fatty meals can significantly delay Viagra's effectiveness, whilst Spedra is less affected by food intake. Both medications can have enhanced side effects when combined with alcohol, though moderate alcohol consumption is generally acceptable.

Side Effect Profiles

Common side effects for both medications include headaches, facial flushing, and nasal congestion. Viagra 100mg may cause more visual disturbances (blue-tinted vision), whilst Spedra might cause back pain in some users. Most side effects are mild and temporary, resolving as the medication leaves your system.

Cost Considerations

Viagra is available as both branded tablets and generic sildenafil. The generic sildenafil option provides identical effectiveness at a lower cost, containing the same active ingredient as branded Viagra. Spedra is typically more expensive as it's a newer medication with no generic equivalent currently available. EverydayMeds offers both branded Viagra and generic sildenafil options, allowing patients to choose based on their budget and preferences.

Dosage Flexibility

Viagra is available in 25mg, 50mg, and 100mg strengths, providing flexibility for dose adjustment. Most men start with 50mg, which can be increased to 100mg or reduced to 25mg based on effectiveness and tolerability. Spedra comes in 50mg, 100mg, and 200mg tablets, with 100mg being the typical starting dose.

Clinical Effectiveness

Clinical studies suggest both medications are highly effective for treating erectile dysfunction, with success rates typically exceeding 70% in clinical trials. Individual response varies, and some men may respond better to one medication than another. Factors such as underlying health conditions, other medications, and individual physiology can influence effectiveness.

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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