How to Take Viagra: Complete Dosage Instructions

Viagra (sildenafil citrate) requires proper timing and dosage for optimal effectiveness. This guide provides clear instructions on how to take Viagra safely, including dosage recommendations, timing, and what to expect. EverydayMeds offers both branded Viagra and generic sildenafil options following your online consultation with our UK-licensed prescribers.

  • Take one tablet 30-60 minutes before sexual activity
  • Start with 50mg dose unless advised otherwise by prescriber
  • Maximum one dose per 24-hour period
  • Avoid fatty meals which may delay effectiveness
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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
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Tadalafil Daily
always active
continuous
you never want to think about timing
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Vardenafil
~15–30 min
~8 hrs
you want the fastest onset
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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 and Administration Guidelines

Standard Viagra Dosages

Viagra is available in three strengths: 25mg, 50mg, and 100mg tablets. Most men start with the 50mg dose, which can be adjusted based on effectiveness and tolerance. Your prescriber may recommend a lower 25mg dose if you're over 65, have liver or kidney problems, or take certain medications. The maximum dose of 100mg should only be used if the 50mg dose proves insufficient.

How to Take Viagra Properly

Take your Viagra tablet approximately 30-60 minutes before planned sexual activity. Swallow the tablet whole with water - do not crush, chew, or split it. Viagra works best when taken on an empty stomach, as fatty meals can delay absorption and reduce effectiveness. The medication requires sexual arousal to work, as it enhances the natural response rather than causing automatic erections.

Timing and Frequency

Never exceed one Viagra tablet in any 24-hour period, regardless of the strength. The effects typically last 4-6 hours, though this doesn't mean an erection will persist - it simply means the medication remains active in your system. If you experience an erection lasting more than 4 hours, seek immediate medical attention as this requires urgent treatment.

Food and Alcohol Considerations

While you can take Viagra with or without food, fatty meals may delay its onset of action by up to an hour. Light meals or taking the medication on an empty stomach generally provides faster results. Limit alcohol consumption when using Viagra, as excessive drinking can reduce effectiveness and increase the risk of side effects like dizziness or low blood pressure.

Viagra vs Sildenafil: Your Options

EverydayMeds offers both branded Viagra (Pfizer) and generic sildenafil tablets. Both contain the same active ingredient and work identically - the main difference is cost, with generic sildenafil typically being more affordable. You can choose your preference during the checkout process after completing your online consultation with our UK-licensed prescribers.

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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