Fildena Extra Power (Sildenafil Citrate) — Patient Guide (UK)

Fildena Extra Power contains sildenafil citrate, a well-known medicine used to treat erectile dysfunction (ED). This page explains how it works, when to take it, what to expect, possible side effects, important interactions, and practical tips for safe use in the United Kingdom.

Note: Medicines affect people differently. Always follow the advice of your healthcare professional and the information on the product packaging.

1) Basic product information

• Medicine name: Fildena Extra Power
• Active ingredient: Sildenafil citrate
• What it is used for: Erectile dysfunction (ED) in adult men
• Type of medicine: Phosphodiesterase type 5 (PDE5) inhibitor
• How it’s taken: Oral tablets
• Availability: Sold through regulated online pharmacy and pharmacy channels in the UK

Strengths: Product strengths may vary by pack. Check the label or your pharmacy listing to confirm the exact milligram dose in your order.

2) How Fildena Extra Power works (mechanism of action)

Erectile dysfunction is commonly related to reduced blood flow to the penis, problems with blood vessel relaxation, or the body’s response to sexual stimulation. For an erection to occur, blood vessels in the penis need to relax to allow increased blood flow.

Sildenafil helps by:

• Blocking the enzyme PDE5 (phosphodiesterase type 5)
• PDE5 normally breaks down cGMP (a chemical messenger that relaxes smooth muscle)
• By blocking PDE5, sildenafil helps cGMP remain active longer, which supports blood vessel relaxation
• As a result, erections are more likely and more firm when you are sexually stimulated

Important: Sildenafil does not automatically cause an erection. Sexual stimulation is still required for the medicine to work.

3) Pharmacokinetics (how the body processes it)

Pharmacokinetics describe what happens after you take a dose—absorption, distribution, metabolism, and elimination.

• Absorption: Sildenafil is absorbed from the gut after oral administration. Food—especially fatty meals—can slow absorption.
• Time to peak level: The medicine typically reaches peak blood levels within about 30–120 minutes (varies by person and food).
• Onset: Some men notice effect as early as 30 minutes, but it’s often more reliable closer to 1 hour.
• Duration: Effects can last for several hours (commonly up to 4 hours), though individual experience varies.
• Metabolism: Mainly processed in the liver by enzymes including CYP3A4.
• Elimination: Sildenafil and its metabolites leave the body primarily via urine and faeces.

Practical implication: Because food and interactions can change absorption and metabolism, your “best timing” may vary. Many people find effectiveness best when taking it on an empty stomach or after a light meal.

4) Typical use and what it’s for

Fildena Extra Power is indicated for the treatment of erectile dysfunction (ED)—the inability to achieve or maintain an erection sufficient for satisfactory sexual performance.

It is for adult men. It should only be used when ED is present and after considering whether the medicine is safe for you based on your health and other medicines.

Not for:

• Women or children
• People who do not have ED
• Use with medicines that contain nitrates (see safety and interactions below)

5) Timing: when to take it

The most common approach is to take sildenafil about 1 hour before sexual activity.

General timing guidance:

• Take it: approximately 30 minutes to 1 hour before you plan to have sex (some may need closer to 1 hour).
• If it was taken with a heavy meal: allow more time, as onset can be slower.
• Frequency: follow the dosing instructions on the product and advice from your clinician or pharmacist.

If it doesn’t work immediately: giving it a proper trial at the correct dose and timing can help. Stress, alcohol, and meal size can significantly affect outcomes.

6) Food interactions (what to eat and what to avoid)

Food can affect how quickly sildenafil works. In particular, heavy, fatty meals may delay absorption and reduce how quickly you feel the effect.

Practical tips:

• For faster onset, take sildenafil after a light meal or on a relatively empty stomach.
• If you take it after a heavy meal, consider allowing more time before sexual activity.
• Stay hydrated and avoid very large alcohol doses, which can worsen erections.

What about grapefruit? Grapefruit and grapefruit juice can interact with many medicines through effects on liver enzymes. Because sildenafil is metabolised by CYP3A4, you should consider avoiding grapefruit products or discuss with a pharmacist.

7) Alcohol interactions and safety

Alcohol can worsen erectile dysfunction and increase the risk of side effects such as dizziness and low blood pressure—especially at higher doses.

Safer approach:

• Keep alcohol moderate (or avoid heavy drinking).
• If you feel light-headed, wait and do not take more doses.
• Do not drive or operate machinery if you feel dizzy.

Warning: Combining sildenafil with excessive alcohol can lead to more pronounced blood pressure changes.

8) Medicine interactions (important)

Some medicines can increase sildenafil levels (raising side effect risk), while others can reduce its effectiveness or create dangerous blood pressure effects. Always check your medicines with a pharmacist.

8.1 Absolute contraindication: nitrates

Do not use sildenafil with nitrates (for example, glyceryl trinitrate/nitroglycerin, isosorbide mononitrate/dinitrate), or nitrate-containing preparations used for chest pain (angina). The combination can cause a significant drop in blood pressure that may be dangerous.

8.2 Do not combine with “riociguat”

Riociguat (used for certain lung/blood pressure conditions) can also cause dangerous blood pressure effects when taken with PDE5 inhibitors.

8.3 Medicines that may increase sildenafil levels

These can raise the chance of side effects such as headache, flushing, dizziness, and low blood pressure:

• Strong CYP3A4 inhibitors (examples include some HIV protease inhibitors and certain antifungals such as ketoconazole/itraconazole)
• Some antibiotics (certain macrolides)
• Cimetidine (an acid-reducing medicine)
• Other medicines affecting liver enzymes

8.4 Medicines that may reduce sildenafil effectiveness

• Rifampicin and other strong enzyme inducers
• Some anti-seizure medicines that affect metabolism

8.5 Alpha-blockers (prostate/urinary symptoms)

Men taking alpha-blockers for enlarged prostate or high blood pressure (e.g., tamsulosin, doxazosin, terazosin) may be more prone to dizziness or low blood pressure when combined with sildenafil.

Safety approach: dosing may need to be adjusted. Ask a pharmacist or clinician for guidance, especially if you’re starting treatment or changing doses.

8.6 Other ED medicines

Do not take sildenafil together with other PDE5 inhibitors (such as tadalafil or vardenafil) at the same time.

8.7 “Recreational” nitrite (“poppers”)

In the UK, nitrite inhalants (“poppers”) are sometimes used recreationally. These can act like nitrates in the body. Do not combine with sildenafil.

9) Indications: who should consider it

Fildena Extra Power is used to treat erectile dysfunction. It may be appropriate when ED is due to reduced blood vessel relaxation and sexual stimulation is present.

Not all causes of ED respond equally. If ED is primarily from hormonal problems, medication side effects, psychological factors, or underlying vascular disease, sildenafil may help partially but should be considered as part of broader management.

Seek medical advice promptly if ED is new, rapidly worsening, or accompanied by symptoms such as chest pain, shortness of breath, or severe dizziness.

10) Dosing: how to take it safely

Always follow the dosing instructions on your product packaging and pharmacist guidance. Doses vary by strength and individual factors.

General adult dosing principles for sildenafil:

• Many people start with the lowest effective dose.
• Take sildenafil before sexual activity (commonly about 1 hour prior).
• Do not take more frequently than recommended on the product and by your healthcare professional.

Who may require dose adjustments:

• Men with certain liver or kidney problems
• Men taking medicines that affect sildenafil metabolism (e.g., CYP3A4 inhibitors)
• Older adults may be more sensitive to blood pressure changes and side effects

If you miss a dose: sildenafil is taken “as needed” before sex. If you missed timing, you can plan for the next opportunity rather than taking an extra dose.

11) Safety profile: side effects and warning signs

11.1 Common side effects

These are usually mild to moderate and often improve as your body adjusts:

• Headache
• Flushing (warmth/redness in the face)
• Indigestion or stomach discomfort
• Blocked nose
• Dizziness
• Blurred vision or changes in colour perception (temporary)

11.2 Seek urgent medical help

Stop taking sildenafil and seek urgent medical attention if you experience:

• Chest pain or symptoms of a possible heart problem
• Severe dizziness, fainting, or collapse
• Prolonged erection (priapism) lasting 4 hours or more
• Sudden vision loss or serious visual disturbance
• Sudden hearing loss or severe ringing in the ears

11.3 Special precautions

• Men with certain heart conditions should not use ED medicines without appropriate assessment.
• If you have a history of stroke or significant cardiovascular disease, discuss ED treatment options with a professional.
• Use caution if you have low blood pressure or are dehydrated.
• Do not drink large amounts of alcohol around the time of use.

12) Practical use tips (how to get the best results)

• Start with the right timing: most men find an effective window around 1 hour before sexual activity.
• Choose a lighter meal: heavy/fatty foods may delay onset.
• Use in a calm setting: stress and anxiety are common causes of ED; sildenafil works best when you’re sexually stimulated.
• Avoid excessive alcohol: it can both reduce performance and increase dizziness.
• Plan for trial and adjustment: it may take a few occasions at the correct dose and timing to understand your best response.
• Don’t “stack” doses: taking more than recommended increases risk without guaranteeing better erections.
• Check your other medicines: particularly blood pressure medicines, alpha-blockers, and any drugs that interact with the liver.

13) Alternative options for ED (if sildenafil isn’t suitable)

If sildenafil does not work well for you, is not suitable due to interactions, or causes side effects, there are alternatives.

13.1 Other PDE5 inhibitors

• Tadalafil (often longer duration; may suit men who prefer a longer window)
• Vardenafil
• Avanafil

13.2 Non-sildenafil approaches

• Lifestyle measures: stopping smoking, regular exercise, weight management, limiting alcohol, and improving sleep
• Address underlying causes: diabetes, vascular health, stress, and medication side effects
• Vacuum erection devices and other medical options
• Intracavernosal therapies (specialist use)
• Penile implants (for selected cases)

Tip: A pharmacist can help compare options and flag potential interactions, especially if you’re switching between ED medicines.

14) UK market & legal context

In the United Kingdom, medicines used for ED must be supplied safely and in line with UK medicines regulations. Online pharmacy services may only supply medicines where appropriate legal requirements are met, including patient safety checks and age/eligibility considerations.

Buying from reputable sources matters:

• Use UK-registered pharmacies or regulated online pharmacy services.
• Avoid products from unverified websites or counterfeit listings.
• Check packaging and tablet appearance only if you are familiar with the genuine product; when in doubt, consult your pharmacist.

Safety statement: Erectile dysfunction can be linked to cardiovascular disease. If you have risk factors such as high blood pressure, diabetes, or high cholesterol, it may be worth discussing ED with a healthcare professional.

15) Recent guidance and clinical considerations (UK context)

In the UK, ED management commonly follows evidence-based guidance that emphasises:

• Assessing cardiovascular risk and overall fitness for sexual activity
• Reviewing medicines to avoid dangerous interactions (especially nitrates)
• Starting at the lowest effective dose and adjusting based on response and tolerability
• Considering underlying causes rather than treating ED in isolation

When to be extra cautious: if you recently had heart-related symptoms, have unstable angina, or are taking complex medication regimens, it’s important to confirm safety with a pharmacist or clinician before use.

16) Delivery and availability (UK online pharmacy)

Availability can vary by supplier and the current stock of tablets and strengths. In general, reputable UK online pharmacies aim to provide:

• Clear product listings including strength and quantity
• Secure checkout and compliance with relevant regulations
• Tracking options where available
• Packaging designed for discreet delivery (where offered)

Delivery time: delivery schedules depend on the specific pharmacy and courier network. You may see an estimated dispatch and delivery window at checkout.

Storage: keep tablets in a safe place, away from heat and moisture, and follow the instructions on the outer packaging.

17) Summary at a glance

18) FAQ

Is Fildena Extra Power the same as Viagra?

Fildena Extra Power contains sildenafil citrate, which is the same active ingredient found in several branded sildenafil products. Different brands may have different tablet strengths, packaging, and patient information.

How long before sex should I take it?

Many people take sildenafil around 1 hour before. If you’ve eaten a heavy meal, you may need more time for it to work. Do not take it more frequently than advised.

Can I take it with food?

Yes, but food—especially fatty meals—can delay onset. If you want the fastest effect, take it with a light meal or on a relatively empty stomach.

Does it work if I’m not sexually stimulated?

No. Sildenafil supports blood flow and helps erections in response to sexual stimulation. It does not create sexual desire or cause an erection on its own.

Can I drink alcohol when using it?

Small amounts may be tolerated, but alcohol can reduce erectile performance and increase dizziness or low blood pressure risk. Keep alcohol moderate or avoid heavy drinking.

What should I do if I get side effects?

Stop sexual activity and avoid driving if you feel dizzy. Mild side effects often improve. If you have severe symptoms (such as chest pain, fainting, prolonged erection, or sudden vision/hearing changes), seek urgent medical care.

Who should not take sildenafil?

In general, sildenafil should not be used if you take nitrates for angina or have been prescribed riociguat. People with certain serious heart conditions may need medical review before using ED medicines. A pharmacist can help check compatibility with your current medicines.

Will it cure my erectile dysfunction permanently?

It treats ED symptoms when taken as needed. It doesn’t cure the underlying cause. Many men benefit most when combined with lifestyle improvements and investigation of contributing factors such as stress, vascular health, diabetes, or medication side effects.

How many times can I take it?

Frequency varies by individual and product guidance. Use it only as directed and avoid exceeding the recommended maximum dose within 24 hours.

What if it doesn’t work for me?

Consider timing, meal size, alcohol, anxiety, and whether interactions may be reducing its effect. If it repeatedly doesn’t work, speak to a pharmacist or clinician to check dose appropriateness and underlying causes.

Is it safe to use with blood pressure tablets?

Some blood pressure medicines can be compatible, while others may increase dizziness or low blood pressure risk. Tell your pharmacist what you take, especially if you use alpha-blockers or multiple antihypertensive medicines.

Final reminder: If you have any concerns about your health, heart status, or interactions with other medicines, speak to a pharmacist before using Fildena Extra Power.