Comparing Sildenafil and Tadalafil for ED Treatment

When choosing erectile dysfunction treatment, understanding the differences between sildenafil (Viagra) and tadalafil (Cialis) can help you make an informed decision. Both medications are PDE5 inhibitors that work effectively for ED, but they differ in duration, timing, and suitability for different lifestyles. EverydayMeds offers both branded and generic options following a clinical consultation with our UK-licensed prescribers to determine the most appropriate treatment for your individual needs.

  • Sildenafil works for 4-6 hours, whilst tadalafil can last up to 36 hours
  • Both medications require sexual stimulation to be effective
  • Sildenafil is typically taken 30-60 minutes before activity
  • Generic alternatives offer the same effectiveness at lower cost
Start your free consultation

Takes less than 2 minutes to complete, 100% online

More pleasure. Less waiting. Built to last.

Get Started

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 Do Sildenafil and Tadalafil Compare?

Both sildenafil and tadalafil belong to the same class of medications called PDE5 inhibitors, which work by increasing blood flow to the penis during sexual arousal. The key difference lies in how long each medication remains active in your system. Sildenafil typically provides effectiveness for 4-6 hours, making it suitable for planned intimate moments. Tadalafil, on the other hand, can remain effective for up to 36 hours, offering more spontaneity in timing.

Timing and Lifestyle Considerations

Sildenafil is usually taken 30-60 minutes before sexual activity, and food (particularly fatty meals) may delay its onset. This makes it ideal for men who prefer to plan ahead and don't mind timing their dose. Tadalafil can be taken as needed or as a lower daily dose, providing more flexibility for spontaneous intimacy. The choice between these options often depends on your lifestyle preferences and relationship dynamics.

Effectiveness and Success Rates

Clinical studies show both medications are highly effective for treating erectile dysfunction, with success rates typically ranging from 70-85% depending on the underlying cause of ED. Neither medication causes automatic erections - sexual stimulation is still required for both to work effectively. The success of treatment also depends on factors such as overall health, psychological wellbeing, and adherence to dosing instructions.

Branded vs Generic Options

At EverydayMeds, we offer both Viagra (branded sildenafil) and generic sildenafil, allowing you to choose based on your preferences and budget. Generic sildenafil contains the same active ingredient as Viagra and meets identical quality standards, but typically costs significantly less. Similarly, generic tadalafil offers the same benefits as the branded version whilst providing excellent value for money.

Side Effects and Safety Considerations

Both medications share similar side effect profiles, including potential headaches, facial flushing, indigestion, and nasal congestion. These effects are usually mild and temporary. However, both medications have important contraindications, particularly for men taking nitrate medications for heart conditions, as this combination can cause dangerous drops in blood pressure. Our clinical assessment process ensures treatment suitability and safety.

Making Your Choice

The decision between sildenafil and tadalafil often comes down to personal preference regarding timing and lifestyle. Men who prefer planned intimacy may find sildenafil's 4-6 hour window sufficient, whilst those seeking more spontaneity might prefer tadalafil's longer duration. Our UK-licensed prescribers can help evaluate which option may be most suitable based on your individual circumstances, health status, and treatment goals during your confidential consultation.

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.
Couple laughing together

How it works

Achieve your goals in just a few simple steps.

Step 1

Start Free Consultation

Select safe UK treatments. Quick answers.

Step 2

Review By Our Clinical Team

Our expert team will use your consultation as the basis of our recommendation and communicate with you.

Step 3

Get it delivered fast

We’ll deliver direct to you, as quickly as tomorrow.

Frequently asked questions