How to Take Viagra & Sildenafil: Complete Guide

Viagra and its generic alternative sildenafil are proven treatments for erectile dysfunction when taken correctly. Both contain the same active ingredient - sildenafil citrate - but differ in price and branding. This guide provides essential information on proper usage, dosing, and safety considerations to help you use these medications effectively. EverydayMeds offers both options following online consultation.

  • Take 30-60 minutes before sexual activity on an empty stomach
  • Start with 50mg dose - can be adjusted to 25mg or 100mg
  • Never exceed one tablet in 24 hours
  • Avoid fatty meals and excessive alcohol before taking
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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.

Proper Dosing and Administration Instructions

Standard Dosing Protocol

The recommended starting dose for both Viagra and sildenafil is 50mg, taken approximately one hour before sexual activity. Your prescriber may adjust this to 25mg if you experience side effects, or increase to 100mg if 50mg proves insufficient. The maximum frequency is one tablet per 24-hour period, regardless of strength.

Timing and Food Considerations

Take your tablet 30-60 minutes before anticipated sexual activity. Avoid heavy or fatty meals beforehand as these can delay absorption and reduce effectiveness. The medication works best when taken on an empty stomach. Sexual arousal is still required - sildenafil enhances natural responses rather than causing automatic erections.

What to Expect

Effects typically begin within 30-60 minutes and can last 4-6 hours. This doesn't mean you'll have an erection for this duration - rather, you may find it easier to achieve and maintain erections during this window when sexually stimulated. Individual response times vary based on factors including age, overall health, and other medications.

Choosing Between Branded and Generic

EverydayMeds offers both Viagra (branded) and sildenafil (generic) at checkout. Both contain identical active ingredients and work in exactly the same way. The generic version typically costs significantly less whilst providing equivalent clinical effectiveness. Your choice may depend on personal preference and budget considerations.

Important Safety Reminders

Never combine with nitrate medications such as GTN spray, as this can cause dangerous blood pressure drops. Limit alcohol consumption as this may reduce effectiveness and increase side effect risk. If you experience an erection lasting over 4 hours, seek immediate medical attention. Common side effects include headache, flushing, and nasal congestion.

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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