Filitra (Vardenafil) – Patient Information Guide (UK)

Filitra contains vardenafil, a medicine used to treat erectile dysfunction (ED) in adult men. This guide is designed to help you understand how Filitra works, how to use it effectively, and what to consider for safety and interactions.

Important: This information is not a substitute for advice from a healthcare professional. If you have any medical conditions or take other medicines, it’s especially important to discuss them before starting Filitra.

1) Basic product information

Who it’s for: Adult men with erectile dysfunction (difficulty achieving and/or maintaining an erection sufficient for satisfactory sexual activity).

Who it’s not for: Do not use Filitra if a clinician has told you not to. Avoid if you take medicines that can dangerously interact with PDE5 inhibitors (see “Interactions and safety” below).

2) How Filitra works (mechanism of action)

Vardenafil belongs to the group of medicines called PDE5 inhibitors. These medicines help improve blood flow to the penis by affecting the enzyme PDE5.

• During sexual stimulation, your body releases nitric oxide (NO) in the erectile tissue.
• NO increases levels of cGMP, which helps relax smooth muscle in penile blood vessels.
• PDE5 normally breaks down cGMP, reducing the erection response.
• Vardenafil blocks PDE5, helping maintain higher cGMP levels.
• The result is improved blood flow, which can help you achieve and maintain an erection when you are sexually stimulated.

Key point: Filitra does not create sexual desire by itself. It works best when you are sexually aroused.

3) Pharmacokinetics (how the body handles vardenafil)

“Pharmacokinetics” describes what happens to the drug after you swallow it—absorption, distribution, metabolism and elimination.

• Absorption: Vardenafil is absorbed after oral dosing. The speed of absorption can be affected by food (especially a heavy or high-fat meal).
• Peak levels: Blood concentrations typically peak within about 1 hour (timing can vary by individual and formulation).
• Duration of effect: Many people can see effects within a couple of hours and may experience benefit for several hours; the “effective window” can differ between individuals.
• Metabolism: Vardenafil is metabolised mainly by the liver (notably CYP3A4).
• Elimination: Metabolites are eliminated primarily via the liver and bile and partly via the kidneys.

If you have liver impairment or take interacting medicines, the levels of vardenafil may change—your clinician may adjust dose and frequency accordingly.

4) Typical use and what to expect

Filitra is used to treat erectile dysfunction. It helps with erections in response to sexual stimulation. It is typically taken as needed rather than continuously, although dosing schedules may vary based on medical advice and tolerability.

What it can help with:

• Achieving an erection
• Maintaining an erection during sexual activity
• Improving confidence and sexual performance

What it won’t do:

• It won’t treat the cause of erectile dysfunction by itself (e.g., diabetes, vascular disease, stress, certain medications).
• It doesn’t protect against sexually transmitted infections (STIs).

5) Timing: when to take Filitra

For best results:

• Take Filitra before sexual activity.
• Many men find it works best when taken approximately 1 hour prior (some people may need up to a few hours depending on food, arousal, and individual response).
• Because absorption can be slower after a heavy meal, plan accordingly if you eat before sex.

Practical advice: If you are trying Filitra for the first time, consider testing how it affects you on a day when you can allow enough time for onset (and avoid rushing).

6) Food interactions (including effects of meals)

Food can affect how quickly vardenafil starts working.

• Heavy or high-fat meals: may delay absorption and make onset slower.
• Light meals: are less likely to cause significant delay.

Tip: If you plan a meal before sex, avoid very heavy, fatty food close to dosing. You may consider taking Filitra a bit earlier than usual if you’ve had a large meal.

7) Alcohol and interactions with alcohol

Alcohol may reduce erection quality and sexual performance. It can also increase the chance of side effects such as dizziness or low blood pressure.

• Light to moderate alcohol may be tolerated by some men, but effects vary.
• Heavy drinking can make erections harder to achieve even with PDE5 inhibitors.
• If you feel light-headed, avoid further alcohol and sit or lie down.

Safety note: If you experience significant dizziness, fainting, or chest pain, seek urgent medical attention.

8) Medicine interactions and safety profile

PDE5 inhibitors can interact with several medicines. The most critical interaction involves nitrates and certain blood-pressure–lowering strategies.

8.1 Medicines you must not combine

Do not take Filitra if you take nitrates (e.g., glyceryl trinitrate/nitroglycerin) for chest pain (angina), because this combination can cause a dangerous drop in blood pressure.

• Nitrates used for angina (tablets, sprays, patches, or other forms)
• Some “poppers” containing nitrate-like substances

Do not combine with riociguat (for pulmonary hypertension), as this can also lead to significant blood pressure changes.

8.2 Other important interactions

Vardenafil is metabolised in the liver (CYP3A4 pathway). Medicines that inhibit or induce this pathway can change vardenafil levels.

• Strong CYP3A4 inhibitors may increase vardenafil levels (e.g., some antifungals like ketoconazole/itraconazole, and some antivirals). This can raise risk of side effects.
• Alpha-blockers (used for prostate symptoms or high blood pressure) may cause additive blood-pressure lowering, particularly when starting therapy.
• Other PDE5 inhibitors (including sildenafil or tadalafil) should generally not be taken alongside.
• Some antihypertensives can lead to additive lowering of blood pressure.

Always tell your pharmacist/clinician about all medicines you take, including over-the-counter products and herbal remedies.

8.3 Common side effects

Most side effects are mild to moderate and improve as your body adjusts.

• Headache
• Flushing (warmth/redness)
• Indigestion / dyspepsia
• Blocked nose (nasal congestion)
• Dizziness
• Visual disturbances (e.g., changes in colour perception) in some people

8.4 Serious (seek urgent help)

Stop the medicine and get urgent medical help if you experience:

• Chest pain or severe shortness of breath
• Fainting or severe dizziness
• Sudden vision loss or severe decrease in vision
• Sudden hearing loss or ringing in the ears
• Prolonged erection (priapism) lasting more than 4 hours
• Signs of a serious allergic reaction (e.g., facial swelling, difficulty breathing, widespread rash)

9) Indications: when Filitra is used

Indication: Erectile dysfunction in adult men.

It may be considered when ED is related to factors such as:

• Vascular changes (e.g., reduced blood flow)
• Stress, performance anxiety, or reduced confidence
• Mixed contributing factors

If your ED is new, worsening rapidly, or associated with symptoms such as chest pain on exertion, numbness/weakness, or significant cardiovascular symptoms, seek medical review promptly—ED can sometimes be an early sign of underlying vascular disease.

10) Dosing: how much to take

Dosage should be individualised based on your response and tolerability. The following information is general; always follow your dosing plan as advised by a healthcare professional or the product instructions you receive.

Typical starting regimen (as-needed use)

• Many men start with a lower dose to assess response and side effects.
• Dose may be adjusted upward or downward depending on effectiveness and tolerability.

General dosing principles

• Take as needed before sexual activity.
• Try to keep dosing consistent with the timing that works best for you.
• Do not take more than recommended in your dosing schedule.
• If you miss a dose, do not “double up.” Simply take it when you next need sexual activity and it fits your dosing schedule.

Special populations

• Older adults: may be more sensitive to side effects; lower starting doses are often considered.
• Liver impairment: dosing may need adjustment.
• Kidney impairment: dosing may need adjustment depending on severity.
• Concomitant medicines: if you take interacting medicines, dose and timing may require careful adjustment.

Seek clinical advice if you have liver disease, severe kidney problems, or take medications that affect CYP3A4 or blood pressure.

11) Practical use tips for better results

• Use adequate sexual stimulation: vardenafil works with arousal; it is not an aphrodisiac.
• Plan your timing: consider taking about 1 hour before, adjusting if you’ve eaten heavily.
• Keep alcohol moderate: heavy alcohol can reduce effectiveness and increase dizziness.
• Be mindful of stress and anxiety: ED can worsen with pressure to “perform.” Taking time and reducing pressure can help.
• Check other health factors: smoking, obesity, poor sleep, diabetes, and high cholesterol can impact ED. Addressing these improves long-term outcomes.
• If it doesn’t work: don’t automatically keep increasing dose. Discuss with a healthcare professional—timing, food, dose selection, and underlying causes all matter.

12) Alternative options (if Filitra isn’t suitable)

If Filitra is not appropriate, not effective, or causes unwanted side effects, there are other options for ED treatment. Alternatives may include:

Other PDE5 inhibitors

• Sildenafil (often faster onset for some people)
• Tadalafil (often longer lasting; sometimes used for more spontaneity)
• Avanafil (rapid onset for some)

Non-PDE5 options

• Vacuum erection devices (mechanical assistance)
• Intracavernosal injections (medical supervision required)
• Intraurethral therapy (where available and appropriate)
• Lifestyle and counselling approaches (especially for anxiety-related ED)

Your clinician can help choose the best approach based on your health, preferences, and medication list.

13) UK market and legal context (overview for patients)

In the United Kingdom, medicines are regulated to ensure appropriate quality, safety, and prescribing/dispensing processes. PDE5 inhibitors such as vardenafil are medicines that may be supplied through licensed channels and may be subject to controls based on their risk profile.

Patients should ensure they buy from reputable, UK-compliant suppliers and that products are authentic, correctly labelled, and within expiry. Avoid counterfeit medicines and unregulated websites.

If you are unsure, speak to a pharmacist. They can also help assess whether a PDE5 inhibitor is safe for you given your medical history and medicines.

14) Recent guidance and considerations (2024–2026 awareness)

Across this period, general clinical messaging for ED medications has focused on:

• Safety screening for cardiovascular risk before PDE5 inhibitors are used.
• Strict avoidance of nitrates and incompatible vasodilator combinations.
• Awareness of drug–drug interactions (especially liver enzyme inhibitors/inducers and blood pressure medicines).
• Prompt reassessment if ED is new or associated with other concerning symptoms.

Guidance may vary by clinical setting and individual circumstances, so always consider advice from your healthcare professional and follow the instructions that come with your product.

15) Delivery and availability (UK)

Availability can vary by supplier. When purchasing online in the UK, choose a pharmacy that provides:

• Clear product details and strength information
• UK-compliant delivery options (standard and tracked services where available)
• Transparent delivery times and costs
• Secure payment and appropriate packaging
• Customer support contact details

Delivery expectations: many UK online pharmacies aim to dispatch promptly after order processing. Delivery times typically depend on stock availability and chosen shipping method. If you need it by a specific date, check the delivery options before completing your order.

Storage: store tablets according to the package instructions—usually at room temperature and away from excessive heat and moisture, in a safe place away from children.

16) FAQ (Frequently asked questions)

How quickly does Filitra work?

Many men notice effects within about 1 hour. Heavy meals can delay onset. If you don’t feel effects, it may be due to timing, food, dose, arousal level, or underlying causes.

How long does it last?

Effects vary by person, but many experience benefit for several hours. If you have concerns about duration or need more flexibility, discuss alternatives such as other PDE5 inhibitors.

Can I take Filitra every day?

Filitra is often used as needed. In some cases, clinicians may consider different schedules based on your medical situation. Do not change frequency without professional advice.

Is Filitra safe with high blood pressure or cholesterol medicines?

Sometimes yes, but it depends on your medicines and health. Some blood pressure medicines can increase the risk of dizziness or low blood pressure when combined with PDE5 inhibitors. Always check your full medicine list with a clinician or pharmacist.

Can I take Filitra if I use nitrates for angina?

No. Do not combine vardenafil with nitrates. This combination can cause a dangerous fall in blood pressure.

What if I forget to take Filitra before sex?

If you’re within your dosing window and still planning sexual activity, you can take it according to the usual timing guidance. If you’re too close to sex or unsure, follow product instructions or seek pharmacist advice—avoid doubling doses.

What should I do if I feel dizzy?

Stop sexual activity, sit or lie down, and avoid alcohol. If dizziness is severe, you faint, or you have chest pain, seek urgent medical help.

Can I use Filitra with recreational drugs?

Avoid recreational drugs that affect blood pressure or contain nitrate-like substances. Mixing substances can increase risk of dangerous side effects. If you’re unsure, ask a pharmacist.

Does Filitra treat the cause of ED?

It helps with erections during sexual stimulation, but it doesn’t cure underlying causes such as diabetes, cardiovascular disease, hormonal issues, smoking, or stress. Long-term improvements may require addressing those factors.

When should I see a doctor?

Get medical advice if:

• ED is new or worsening
• You have cardiovascular symptoms (e.g., chest pain with exertion)
• You have side effects that persist or worry you
• You experience an erection lasting more than 4 hours

What are the most common side effects?

Common side effects include headache, flushing, indigestion, nasal congestion, and dizziness.

17) Summary

Filitra (vardenafil) is an oral PDE5 inhibitor used for erectile dysfunction. It improves blood flow to the penis during sexual stimulation by blocking the PDE5 enzyme. For many men, it works within about 1 hour, but timing can be affected by food—especially heavy meals. Always consider safety, particularly interactions with nitrates and other medicines that influence blood pressure or liver metabolism.

If you’d like, tell us what medicines you currently take and whether you have any relevant health conditions (such as heart disease or liver problems). We can help you identify key interaction checks to discuss with a healthcare professional.