Viagra or Cialis: Choosing the Right ED Treatment

When comparing erectile dysfunction treatments, Viagra and Cialis are the two most recognised options available in the UK. Both medications work effectively but differ in onset time, duration, and how they fit into your lifestyle. Understanding these differences can help you make an informed choice about which treatment may be more suitable for your needs. EverydayMeds offers both branded Viagra and generic sildenafil options following a clinical consultation.

  • Viagra works within 30-60 minutes and lasts 4-6 hours
  • Cialis can work for up to 36 hours with longer-lasting effects
  • Both require sexual stimulation to be effective
  • Generic alternatives offer the same active ingredients 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.

Understanding Your ED Treatment Options

How Viagra and Cialis Compare

Viagra (sildenafil) and Cialis (tadalafil) are both PDE5 inhibitors that work by increasing blood flow to the penis when sexually aroused. The key differences lie in their timing and duration. Viagra typically works within 30-60 minutes and remains effective for 4-6 hours, making it suitable for planned sexual activity. Cialis, conversely, can remain active in your system for up to 36 hours, offering more spontaneous opportunities.

Onset and Duration Differences

The choice between these medications often comes down to lifestyle preferences. Viagra's shorter duration may suit those who prefer taking medication closer to the time of sexual activity. The effects of food can delay Viagra's onset, particularly fatty meals. Cialis may be less affected by food and offers the convenience of longer-lasting effectiveness, though this doesn't mean maintaining an erection for extended periods.

Dosage and Administration

Viagra is available in 25mg, 50mg, and 100mg strengths, with 50mg being the typical starting dose. The medication should be taken approximately one hour before sexual activity, with a maximum of one dose per 24-hour period. Your prescriber may adjust the dose based on effectiveness and any side effects experienced. Both branded Viagra and generic sildenafil contain the same active ingredient.

Effectiveness and Suitability

Clinical studies show both medications are effective for treating erectile dysfunction in suitable candidates. The choice between them often depends on individual response, lifestyle factors, and personal preference. Some men may find one medication more suitable than the other based on how their body responds. Generic alternatives like sildenafil offer the same therapeutic benefits as branded Viagra at a more affordable price point.

Safety Considerations

Both medications require careful medical assessment before prescribing. They're contraindicated in men taking nitrate medications due to dangerous blood pressure interactions. Other considerations include cardiovascular health, current medications, and medical history. Common side effects may include headaches, facial flushing, or indigestion, which are generally mild and temporary.

Making Your Decision

The best ED treatment varies between individuals based on medical history, lifestyle, and personal preferences. Consulting with a qualified healthcare provider helps determine the most appropriate option. At EverydayMeds, patients can choose between branded medications and generic alternatives following clinical assessment. Our UK-licensed prescribers evaluate your suitability and provide guidance on the most suitable treatment approach.

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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