How Long for Viagra to Work? Start Your Prescription

Viagra typically begins working within 30-60 minutes of taking it, with effects lasting up to 6 hours. Getting your prescription has never been easier with EverydayMeds' confidential online consultation service. Our UK-licensed clinicians can assess your suitability for Viagra or the more affordable generic alternative, sildenafil. Complete your assessment today to start treatment for erectile dysfunction from the comfort of your home.

  • Complete confidential online consultation in minutes
  • Assessment by UK-licensed prescriber
  • Choose between branded Viagra or generic sildenafil
  • Discreet next-day delivery across the UK
Start your free consultation

Takes less than 2 minutes to complete, 100% online

More pleasure. Less waiting. Built to last.

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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.

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How Quickly Does Viagra Work?

Viagra typically takes 30-60 minutes to become effective after taking it. The medication works by increasing blood flow to the penis when you become sexually aroused, but it requires sexual stimulation to be effective. Effects can last for 4-6 hours, though this doesn't mean you'll have an erection for this entire duration. Taking Viagra with a large or fatty meal may delay how quickly it starts working.

Getting Your Prescription Through EverydayMeds

Starting your ED treatment is straightforward with our online consultation process. Simply complete our confidential medical questionnaire, which takes just a few minutes. Our UK-licensed clinicians will review your responses and medical history to determine if Viagra or sildenafil is suitable for you. You'll receive a decision within hours, and if approved, can choose between branded Viagra or the more cost-effective generic sildenafil at checkout.

Online Assessment Process

Our clinical assessment evaluates your cardiovascular health, current medications, and medical history to ensure treatment safety. The questionnaire covers important factors such as any heart conditions, blood pressure medications, and other treatments you may be taking. This thorough assessment ensures you receive appropriate treatment whilst avoiding potentially dangerous drug interactions, particularly with nitrate medications.

Dosage Options Available

Both Viagra and sildenafil are available in 25mg, 50mg, and 100mg strengths. Most men start with the 50mg dose, taken approximately one hour before sexual activity. Your prescriber may recommend adjusting the dose to 25mg if you experience side effects, or increasing to 100mg if the initial dose isn't sufficiently effective. Remember, you should never take more than one dose within 24 hours.

Choosing Between Viagra and Sildenafil

At checkout, you can select either branded Viagra or generic sildenafil - both contain the same active ingredient and work identically. The generic option typically costs significantly less whilst providing the same therapeutic benefits. Your choice depends on personal preference and budget considerations. Both medications are manufactured to the same strict UK quality standards.

What to Expect After Taking Viagra

After taking your prescribed dose, you should begin to notice improved ability to achieve and maintain an erection within 30-60 minutes when sexually stimulated. The medication doesn't cause automatic erections - sexual arousal is still necessary. Common side effects may include headache, facial flushing, or indigestion, which typically resolve on their own. If you experience any concerning symptoms, contact your healthcare provider immediately.

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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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