How to Take Viagra: Complete UK Dosage Guide

Viagra (sildenafil) requires proper timing and dosage for safe, effective results. Take one tablet 30-60 minutes before sexual activity, with or without food. Starting dose is typically 50mg, adjustable to 25mg or 100mg based on response. Never exceed one dose per 24 hours. EverydayMeds offers both branded Viagra and generic sildenafil options following clinical assessment by UK-licensed prescribers for your convenience and budget.

  • Take 30-60 minutes before sexual activity for optimal timing
  • Start with 50mg dose, adjustable to 25mg or 100mg as needed
  • Limit to one tablet maximum per 24-hour period
  • Avoid fatty meals which may delay effectiveness
Start your free consultation

Takes less than 2 minutes to complete, 100% online

Your sexual health treatments, all online and made simple.

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
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.

Viagra Dosage Instructions and Safety Guidelines

When to Take Viagra

Take Viagra approximately 30-60 minutes before planned sexual activity. The medication typically begins working within this timeframe and effects may last 4-6 hours. This doesn't mean an erection lasts this long - sexual stimulation is still required for the medication to work effectively.

Dosage Guidelines

The standard starting dose is 50mg, taken as needed. Based on effectiveness and tolerability, your prescriber may adjust this to 25mg or increase to 100mg. Never take more than one dose in 24 hours, regardless of strength. EverydayMeds offers both branded Viagra and generic sildenafil in 25mg, 50mg, and 100mg strengths following clinical assessment.

Taking with Food and Drink

Viagra can be taken with or without food. However, fatty or heavy meals may delay absorption and reduce effectiveness. Limit alcohol consumption as it can impair the medication's effectiveness and increase side effect risks. Avoid grapefruit juice which may affect how your body processes the medication.

Important Safety Considerations

Never combine Viagra with nitrate medications such as GTN spray or isosorbide tablets - this combination can cause dangerous blood pressure drops. Inform your prescriber about all medications you're taking during consultation. Stop sexual activity and seek immediate medical attention if you experience chest pain, dizziness, or nausea during sexual activity.

What to Expect

Viagra enhances natural erectile response but requires sexual arousal to work. Common mild side effects may include headache, flushing, or indigestion. Contact your prescriber if side effects persist or worsen. Seek immediate medical help for erections lasting over 4 hours.

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