Fildena CT (Sildenafil Citrate) – Patient Information (UK)

Fildena CT contains sildenafil citrate, a medicine used to treat certain forms of sexual dysfunction in men. This page explains how it works, how to take it safely, what to expect, and important interactions and safety information. It is written for patients in the United Kingdom and is suitable for general guidance.

Important: Sexual activity carries a cardiovascular risk for some people. If you have heart disease, chest pain, or severe shortness of breath, talk to a healthcare professional before using sildenafil. Do not use this medicine if you have been advised to avoid sexual activity due to heart or blood pressure problems.

Quick Overview

• Active ingredient: Sildenafil citrate
• Brand: Fildena CT
• Used for: Erectile dysfunction (ED)
• How it works: Helps increase blood flow to the penis during sexual stimulation
• When it starts to work: Often within 30–60 minutes
• Duration: Commonly up to 4 hours (may vary)

What is Fildena CT?

Fildena CT is an oral medicine containing sildenafil citrate. Sildenafil belongs to a group of medicines called phosphodiesterase type 5 (PDE5) inhibitors. It is used to improve erections in men who have difficulty achieving and/or maintaining an erection suitable for sexual activity.

Fildena CT is designed to be taken by mouth. Tablets are swallowed with water. The “CT” in the name may indicate the product formulation available from the manufacturer; however, the key active ingredient is still sildenafil citrate.

Mechanism of Action (How it Works)

Sildenafil works by temporarily strengthening the effects of nitric oxide, a natural chemical the body releases during sexual arousal.

In practical terms:

• Sexual stimulation leads to release of nitric oxide in penile tissue.
• Not all nitric oxide signals result in adequate erection. Sildenafil helps by inhibiting PDE5 (an enzyme).
• By inhibiting PDE5, sildenafil helps maintain higher levels of cyclic GMP.
• This relaxes smooth muscle in penile blood vessels, improving blood flow.
• The result is an erection that is more achievable and easier to maintain when you are sexually stimulated.

Key point: Sildenafil does not create an erection without sexual stimulation.

Pharmacokinetics (How the Body Handles Sildenafil)

“Pharmacokinetics” describes what happens to a medicine after you take it—absorption, distribution, metabolism, and elimination. While exact values can vary by person and product formulation, typical patterns include:

• Absorption: Sildenafil is absorbed from the stomach and intestines. Food can slow absorption.
• Peak concentration: Often reached about 30–120 minutes after taking a dose.
• Onset: Many people notice effects within 30–60 minutes.
• Half-life: Approximately 3–5 hours, which contributes to the lasting effect.
• Metabolism: Primarily metabolised in the liver (commonly via CYP enzymes).
• Elimination: Metabolites are removed mainly through bile/faeces and, to a lesser extent, urine.

Why this matters: Because peak levels may take time and food can delay absorption, timing your dose can influence when you can expect an effect.

What is Fildena CT Used For (Indications)

Fildena CT is indicated for:

• Erectile dysfunction (ED): Inability to achieve and/or maintain an erection sufficient for satisfactory sexual performance.

It is not a treatment for low libido, infertility, or premature ejaculation by itself.

Typical Timing and When It Works

Many people find that sildenafil works best when taken with adequate planning.

• Best timing for many men: About 30–60 minutes before sexual activity.
• Later effectiveness: Some men may notice benefit later, depending on metabolism and food intake.
• Duration: Effects may last for up to 4 hours (sometimes longer, sometimes shorter).

Practical tip: Try taking it on a day when you can observe how your body responds. Avoid “testing” repeatedly back-to-back in short timeframes.

Dosing: How to Take Fildena CT Safely

Always follow the dose instructions provided with your product and any advice from a healthcare professional. Individual dosing may vary due to other medications, age, and health conditions.

Common approach (adult male)

• Starting dose: Often 50 mg as a first attempt in many adults.
• Adjustments: Depending on effectiveness and side effects, the dose may be adjusted (for example, increased or decreased).
• Maximum frequency: Typically no more than once per day.

If you are unsure which strength your tablet contains, check the label on your packaging.

How to take it

• Swallow the tablet with water.
• Take it on an empty or lighter stomach if you want faster onset.
• Allow time before sex for absorption and effect.

If it does not seem to work: Sildenafil helps erections during sexual stimulation. Factors like heavy meals, alcohol, stress, smoking, and underlying health conditions can affect results.

Food Interactions (Including Fatty Meals)

Food can influence how quickly sildenafil starts working.

• Fatty or heavy meals may delay the onset of action and reduce how quickly you notice effects.
• A lighter meal usually causes less delay.

Tip: For predictable timing, consider taking your dose after a lighter meal, or on a relatively empty stomach.

Alcohol and Medicine Interactions

Alcohol

Alcohol can affect sexual performance and may increase side effects such as dizziness, headache, flushing, or low blood pressure symptoms.

• Moderate alcohol may reduce erection quality even if sildenafil works.
• Heavy drinking increases the risk of side effects and may impair safe blood pressure regulation.

Practical guidance: If you plan to drink, keep it moderate and know how you respond. Avoid driving or risky activities if you feel dizzy.

Medicine interactions (very important)

Sildenafil can interact with certain medicines, especially those that affect blood pressure or nitric oxide pathways.

Do not take sildenafil with nitrates (often used for chest pain/angina) because the combination can cause a dangerous drop in blood pressure.

Medicines that require urgent caution

• Nitrates (e.g., glyceryl trinitrate, isosorbide products) – contraindicated
• Riociguat (for pulmonary hypertension) – contraindicated

Other common interaction groups

• Alpha-blockers (for prostate symptoms or high blood pressure) – may increase risk of dizziness or low blood pressure, especially when starting sildenafil or adjusting doses.
• Antihypertensives and other blood pressure medicines – can enhance blood pressure-lowering effects.
• CYP3A4 inhibitors (some antibiotics/antifungals and other medicines) – may increase sildenafil levels and side effects.
• Other PDE5 inhibitors (e.g., tadalafil, vardenafil) – combining increases risk without clear benefit.
• “Poppers” containing amyl nitrite/butyl nitrite – can cause dangerous blood pressure changes.

Tell your clinician or pharmacist about all medicines you take, including over-the-counter products and herbal remedies.

Safety Profile: Side Effects and Warning Signs

Like all medicines, Fildena CT can cause side effects. Many are mild and temporary, but some require urgent medical attention.

Common side effects (often mild)

• Headache
• Flushing (warmth/redness of skin)
• Indigestion or nausea
• Dizziness
• Blocked or runny nose
• Blurred vision or changes in colour perception (e.g., bluish tinge)

Serious side effects – seek urgent help

• Chest pain or severe shortness of breath
• Fainting or severe dizziness
• Vision loss or sudden severe eye problems
• Hearing loss or sudden decrease in hearing
• Priapism (a painful erection lasting 4 hours or more)
• Allergic reaction symptoms such as swelling of face/lips, difficulty breathing, or widespread rash

If you suspect priapism, urgent medical care is required to reduce risk of permanent damage.

Who should take extra care?

Discuss with a healthcare professional before using sildenafil if you have any of the following:

• Heart problems, history of stroke, or significant cardiovascular disease
• Low blood pressure or fluid imbalance
• Severe liver or kidney impairment
• Retinitis pigmentosa or known inherited eye conditions
• Blood disorders or conditions that predispose to priapism
• Recent severe vision changes or eye disease

Practical Use Tips for Better Results

• Ensure sexual stimulation: Sildenafil assists erections during arousal; it is not an automatic erection trigger.
• Time it correctly: Many people benefit from taking it 30–60 minutes before sex.
• Avoid heavy meals right before: A fatty meal can delay onset.
• Start low if advised: If you are older, have health conditions, or take interacting medicines, a lower starting dose may be safer.
• Don’t “stack doses”: Taking more than recommended increases risk of side effects.
• Manage expectations: Stress, anxiety, and relationship factors can reduce response.
• Consider underlying health: ED can be associated with cardiovascular disease, diabetes, high blood pressure, and lifestyle factors.

Alternative Options

If sildenafil isn’t suitable or doesn’t work well for you, there are other ways to manage erectile dysfunction.

Other PDE5 inhibitors

• Tadalafil (often longer lasting)
• Vardenafil
• Avanafil

Non-oral options

• Vacuum erection devices
• Intraurethral or injectable treatments (administered under medical guidance)
• Psychosexual support if anxiety/performance stress is a factor

Lifestyle measures that can help ED

• Stop smoking
• Limit alcohol
• Maintain a healthy weight
• Regular physical activity
• Manage blood pressure, diabetes, and cholesterol
• Improve sleep and reduce stress

UK Market and Legal Context (General Information)

In the United Kingdom, erectile dysfunction medicines including sildenafil are regulated medicines and must be obtained from lawful supply channels. Rules may differ based on strength, formulation, and whether specific products are categorised as prescription-only or pharmacy medicines at a given time.

Patient guidance for the UK:

• Choose an authorised online pharmacy or supplier with transparent product information.
• Check that packaging and labelling are clear, with the correct active ingredient and strength.
• Avoid counterfeit or unlabelled products.
• Be cautious with websites that do not provide reliable contact details or medical safety information.

Recent guidance: The UK medicines environment continues to emphasise patient safety, controlled supply, and reducing risks from counterfeit medicines. Patients should be especially mindful of online sourcing, verifying legitimacy through reliable providers.

Delivery and Availability (UK)

Availability depends on stock levels and product strength. Most online pharmacies in the UK use standard postal delivery or tracked services. Typical delivery times vary by supplier, but commonly include:

• Processing time: Often 1–2 working days
• Delivery method: Royal Mail or courier/tracked delivery
• Estimated delivery: Often a few working days depending on location

What to check at checkout:

• Delivery address type (home/business if applicable)
• Shipping cost and tracking
• Estimated dispatch date
• Returns policy and packaging

For the most accurate information, review the specific delivery terms shown on the website.

Product Information Table

Frequently Asked Questions (FAQ)

1) How quickly does Fildena CT work?

Many people notice effects within 30–60 minutes. Your exact timing can vary depending on metabolism and whether you have eaten, especially if you have had a heavy/fatty meal.

2) How long does it last?

Effect may last for up to about 4 hours. Some men may experience a shorter or longer window. Take it with enough time for your planned activity.

3) Can I take it more than once a day?

In general, sildenafil is taken at a maximum frequency of once per day. Do not exceed the recommended dose or timetable shown with your product.

4) Does it work the first time?

Some men respond on the first attempt, but effectiveness can depend on dose, timing, food, alcohol intake, stress, and underlying health conditions. If it doesn’t seem to work, consider whether timing and meal choices were appropriate and discuss next steps with a healthcare professional.

5) What if I eat a big meal?

A large, especially fatty meal may delay onset and reduce how quickly you notice the effect. For best timing, choose a lighter meal or a longer gap from your last meal.

6) Is it safe with alcohol?

Alcohol can worsen erection quality and increase side effects like dizziness or headache. If you drink, keep it moderate and avoid activities requiring full alertness if you feel unwell.

7) What medicines must I avoid?

Do not use sildenafil with nitrates (for example, glyceryl trinitrate) or with riociguat. Be cautious with alpha-blockers, blood pressure medicines, and strong CYP3A4 inhibitors. If you are on regular medication, check with a healthcare professional or pharmacist.

8) Can I combine it with other ED tablets?

Do not combine sildenafil with other PDE5 inhibitors. Combining increases the risk of side effects without necessarily improving safety or outcomes.

9) What should I do if I get side effects?

Mild effects such as headache or flushing often settle. If you feel faint, experience severe dizziness, chest pain, or vision/hearing changes, seek urgent medical care. If side effects are frequent or severe, stop using sildenafil and get medical advice.

10) What is priapism?

Priapism is an erection that lasts for 4 hours or more and is often painful. This is a medical emergency—seek urgent care immediately.

11) Are there long-term risks?

Many men use sildenafil intermittently without serious issues. However, ED can be a sign of underlying cardiovascular problems. If ED persists, worsening, or is associated with other symptoms, discuss it with a healthcare professional.

12) How do I store Fildena CT?

Store tablets in a safe place according to the label instructions—generally at room temperature, away from moisture and direct sunlight, and out of reach of children.

Before You Use Fildena CT: Safety Checklist

• I am not taking nitrates or riociguat.
• I understand my other medicines and possible interactions (especially for blood pressure or prostate medicines).
• I do not have symptoms that would make sexual activity unsafe for me (e.g., unstable chest pain).
• I will avoid heavy/fatty meals immediately before taking the tablet.
• I know when to seek urgent help (chest pain, fainting, vision/hearing loss, priapism > 4 hours).

If you have any doubts about suitability, consult a qualified healthcare professional or pharmacist in the UK.