Viagra Pill: Quick Facts & Essential Information

Viagra is the branded version of sildenafil, a prescription medication used to treat erectile dysfunction in men. This quick reference guide covers essential facts about Viagra pills, including how they work, dosages, and safety information. EverydayMeds offers both Viagra (branded) and sildenafil (generic) options, allowing patients to choose based on their preference and budget during the checkout process.

  • Viagra contains sildenafil citrate as the active ingredient
  • Available in 25mg, 50mg, and 100mg tablet strengths
  • Takes 30-60 minutes to work and effects may last 4-6 hours
  • Requires prescription following online consultation with UK prescriber
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.

Understanding Viagra Pills: Key Information

Reviewed by Mostafa Damghani · 03/07/2026

What is Viagra?

Viagra is the original branded medication containing sildenafil citrate, developed by Pfizer for treating erectile dysfunction. It works as a PDE5 inhibitor, helping to increase blood flow to the penis when sexually aroused. The medication does not cause automatic erections - sexual stimulation is still required for it to be effective.

Available Dosages and Usage

Viagra pills are available in three strengths: 25mg, 50mg, and 100mg tablets. Most men start with the 50mg dose, which can be adjusted based on effectiveness and any side effects experienced. The medication should be taken 30-60 minutes before sexual activity, with a maximum of one dose per 24-hour period. Taking Viagra with fatty meals may delay its onset of action.

Branded vs Generic Options

At EverydayMeds, patients can choose between Viagra (the branded version) and sildenafil (the generic alternative). Both contain the same active ingredient and work identically, with the main difference being cost. Generic sildenafil typically offers significant savings whilst providing the same therapeutic benefits as branded Viagra.

Safety and Eligibility

Viagra requires a prescription from a UK-licensed prescriber following a clinical assessment. This evaluation considers cardiovascular health, current medications, and medical history to ensure safe use. The medication is not suitable for men taking nitrates, those with severe heart conditions, or recent stroke/heart attack history. Common side effects may include headaches, facial flushing, and nasal congestion.

Getting Started with Treatment

To obtain Viagra through EverydayMeds, complete our confidential online consultation. A UK prescriber will review your assessment and, if suitable, issue a prescription. You can then choose between branded Viagra or generic sildenafil at checkout, with discreet delivery to your preferred address.

Looking to start your weight loss journey?
Take a quick eligibility quiz to explore your options and see how we can support you.
Start your 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.

FAQs

Frequently asked questions

Still have questions?

Our UK pharmacists are happy to help. There is no charge and no obligation.

  • Mon–Fri, 9am–5pm
What's the difference between Viagra and sildenafil?
Viagra is the branded version whilst sildenafil is the generic alternative. Both contain the same active ingredient and work identically, but sildenafil typically costs less than branded Viagra.
How long does a Viagra pill take to work?
Viagra typically takes 30-60 minutes to become effective after taking the tablet. The effects may last for 4-6 hours, though this doesn't mean an erection will last this entire duration.
What dosage of Viagra should I start with?
Most men start with the 50mg dose of Viagra. This can be adjusted to 25mg if side effects occur, or increased to 100mg if the initial dose isn't sufficiently effective.
Can I take Viagra with other medications?
Some medications interact dangerously with Viagra, particularly nitrates used for chest pain. Always disclose all medications during your consultation so the prescriber can assess safety.
How often can I take Viagra pills?
Viagra should only be taken once per 24-hour period. Taking more than one dose daily can increase the risk of serious side effects and is not recommended.