Levitra Professional (Vardenafil) – Patient Information (UK)
Levitra Professional contains vardenafil, a medicine used to treat erectile dysfunction (ED). This guide explains how it works, when to take it, important safety information, and practical tips for getting the best results. It is written for patients in the United Kingdom to help you use your medicine safely and effectively.
1) Basic Product Information
| Item | Details |
|---|---|
| Active ingredient | Vardenafil |
| Medicine type | Phosphodiesterase type 5 (PDE5) inhibitor |
| Common use | Treatment of erectile dysfunction |
| Typical formulation | Oral tablets (strengths vary by product line/pack) |
| How it’s taken | By mouth, shortly before sexual activity |
| How it’s supplied | Availability may vary; ensure you choose a reputable UK-sourced supplier |
Note: Brand names and pack strengths may differ. Always check your specific product packaging and follow the instructions provided by your healthcare professional or pharmacist.
2) What Is Erectile Dysfunction and What Levitra Professional Treats?
Erectile dysfunction (ED) is the persistent or recurrent inability to achieve and/or maintain an erection sufficient for satisfactory sexual activity. It can have many causes, including blood-flow changes, diabetes, cardiovascular conditions, stress, anxiety, smoking, alcohol, or certain medications.
Levitra Professional (vardenafil) helps improve erectile function by supporting blood flow to the penis. It does not cause sexual arousal by itself. Sexual stimulation is still required.
3) Mechanism of Action (How Vardenafil Works)
Vardenafil belongs to the group of medicines called PDE5 inhibitors. During sexual stimulation, nitric oxide is released in the penis. This increases levels of cGMP, which relaxes smooth muscle in penile tissue and allows increased blood flow, helping you achieve an erection.
PDE5 is an enzyme that breaks down cGMP. Vardenafil inhibits PDE5, so cGMP levels remain higher for longer. The result is improved blood vessel response and easier achievement/maintenance of an erection when you are sexually stimulated.
- Helps blood flow to the penis during sexual activity
- Does not automatically produce an erection without stimulation
- Works only when the body’s natural sexual response is activated
4) Pharmacokinetics (Absorption, Onset, Duration, and Elimination)
Pharmacokinetics explains how the body absorbs, processes, and clears a medicine. For vardenafil:
- Absorption: After oral dosing, vardenafil is absorbed from the gastrointestinal tract. Peak levels typically occur about 1 hour after taking a dose (timing can vary depending on whether you’ve eaten).
- Onset of effect: Many people feel effects begin within about 30–60 minutes, with best results often achieved around 60 minutes depending on individual response.
- Duration: Effects generally last long enough for sexual activity for several hours. Some people may find it helpful up to about 4–5 hours, though response varies.
- Metabolism: Vardenafil is broken down mainly in the liver.
- Elimination: Metabolites are cleared from the body primarily via urine and bile/faeces.
Individual differences matter: Age, kidney or liver function, other medicines, alcohol intake, and food timing can all influence how quickly and how strongly you respond.
5) Typical Use and When to Take It
Levitra Professional is intended for use before sexual activity, rather than continuously throughout the week.
Timing
- Take it as directed by your prescriber/pharmacist.
- Common practical timing is around 1 hour before planned sexual activity.
- Some people may respond sooner (as early as 30 minutes), others may need closer to 60 minutes.
How to take it
- Swallow the tablet with water.
- Try to take it at a consistent time relative to meals to understand your personal pattern.
- Sexual stimulation is necessary for an erection to occur.
If it doesn’t work the first time: ED treatment can be affected by stress, alcohol, meal timing, and the dose. It may take a few attempts to find the best timing and approach. If you repeatedly don’t achieve the desired effect, talk to a clinician about dose adjustment or alternatives.
6) Food Interactions (Including Meal Timing)
Food can influence the speed and level of vardenafil in your bloodstream.
- High-fat meals: Eating a large or high-fat meal close to the dose may delay absorption and delay onset of effect.
- Faster onset: Taking vardenafil on a relatively lighter stomach may help it work sooner for some people.
- Practical tip: If you plan a meal, consider finishing most of it at least 1–2 hours before taking your dose (unless your healthcare professional has advised otherwise).
Important: Food does not necessarily reduce effectiveness permanently, but it may affect when you feel the effects.
7) Alcohol and Medicine Interactions
Alcohol
Alcohol can worsen ED for several reasons, including effects on blood vessels, libido, and nerve signalling. It may also increase the chance of side effects such as dizziness, headache, or flushing.
- Limit alcohol when using vardenafil, especially higher volumes.
- If you feel light-headed, stop and sit down, and avoid driving.
Medicines that can interact (key safety points)
Some medicines can significantly affect vardenafil levels or increase blood pressure-lowering effects. The most important interactions involve nitrates and certain heart medicines.
- Nitrates (for chest pain/angina): Do not use vardenafil with nitrates (e.g., glyceryl trinitrate). This combination can cause a dangerous drop in blood pressure.
- “Nitric oxide donors”: Medicines that release nitric oxide can also be risky with PDE5 inhibitors.
- Alpha-blockers (for prostate symptoms or blood pressure): Combination may cause dizziness or low blood pressure. Dosing schedules and specific alpha-blockers matter—your clinician should advise.
- Strong CYP3A4 inhibitors: Some drugs increase vardenafil levels, raising the risk of side effects. Examples include certain antifungals (e.g., ketoconazole, itraconazole) and some HIV protease inhibitors. Use should be assessed carefully.
- Other PDE5 inhibitors: Do not combine with sildenafil/tadalafil or similar ED medicines.
- Riociguat: This medicine for pulmonary hypertension can be unsafe with PDE5 inhibitors.
Tell your pharmacist/clinician about all medicines you take, including over-the-counter products and herbal supplements (especially “natural” sexual performance products), because interactions can occur.
8) Indications (When Levitra Professional Is Used)
Levitra Professional (vardenafil) is indicated for the treatment of erectile dysfunction in adult men. It is used when a man is unable to achieve or maintain an erection suitable for sexual activity.
- ED due to various causes (for example, stress-related or vascular-related ED)
- May be considered alongside lifestyle changes when appropriate
It is not indicated for women and is not intended for use in children or adolescents.
9) Dosing (How Much to Take)
Dosing depends on your health profile and the specific product strength. Follow professional instructions or the directions on your supply documentation.
General dosing principles
- Vardenafil is usually taken as needed before sexual activity.
- Do not take more often than recommended for your specific product.
- If you have kidney or liver impairment, the starting dose may need adjustment.
- Some interactions can require a lower maximum dose.
Typical adult approach (illustrative)
Common practice is to start with a dose chosen to balance effectiveness and tolerability, then adjust if needed. Your prescriber/pharmacist will confirm the correct strength for you.
| Factor | Why it matters |
|---|---|
| Starting dose | Helps reduce side effects while achieving erectile response |
| Effect and tolerance | If effects are insufficient or side effects occur, dose timing/strength may be adjusted |
| Heart and blood pressure status | Vardenafil can cause blood pressure changes; safety assessment is important |
| Kidney/liver impairment | May increase drug levels; lower dosing may be required |
| Drug interactions | Some medicines raise vardenafil exposure—risk of side effects increases |
Important: If you are unsure of your dose, do not guess—check your supplied instructions or speak to a healthcare professional.
10) Safety Profile (Who Should Be Cautious and Possible Side Effects)
Common side effects
Like all PDE5 inhibitors, vardenafil may cause side effects, most of which are mild to moderate and improve as your body adapts.
- Headache
- Flushing (warmth/redness)
- Dizziness
- Indigestion or upset stomach
- Nasal congestion
- Back pain (some people experience this)
Serious side effects – seek urgent help
Stop using vardenafil and seek urgent medical help if you experience:
- Chest pain or symptoms suggesting a heart problem
- Fainting or severe dizziness
- Sudden vision changes (including loss of vision)
- Sudden hearing changes (rare)
- Prolonged erection (lasting more than usual—this needs prompt treatment)
- Severe allergic reaction (swelling of face/lips, difficulty breathing)
When to avoid PDE5 inhibitors or use with extra caution
Discuss carefully with a clinician if you have:
- Low blood pressure or significant cardiovascular disease
- Recent heart attack or stroke
- Severe liver impairment or significant kidney impairment
- Retinitis pigmentosa (a rare inherited eye condition)
- Conditions affecting blood flow to the penis or clotting disorders
Never use vardenafil with nitrates or riociguat.
11) Practical Use Tips for Better Results
- Plan timing around meals: Avoid very heavy, high-fat meals close to dosing.
- Reduce alcohol: Keep intake low to support sexual function and reduce dizziness.
- Use a calm approach: Anxiety can reduce response. Give yourself time and reduce pressure.
- Give it a proper trial: If it doesn’t work immediately, try again at the correct timing (as advised) on a different occasion.
- Consider lifestyle factors: Smoking, excess weight, poor sleep, and low physical activity can all worsen ED.
- Wake up medications check: Some treatments for blood pressure, depression, or prostate symptoms can affect erection quality—ask a clinician rather than stopping medicines.
Remember: Vardenafil helps the body respond better to sexual stimulation; it doesn’t automatically trigger arousal.
12) Alternative Options
If Levitra Professional is not suitable or doesn’t provide the desired results, there are alternatives.
Other PDE5 inhibitors
- Sildenafil (e.g., similar class medicines)
- Tadalafil (different duration and dosing patterns for some people)
- Generic or branded vardenafil options depending on availability
Non-PDE5 options (discuss with a clinician)
- Vacuum erection devices
- Intraurethral or injectable therapies
- Psychosexual therapy when anxiety/performance stress contributes
- Managing underlying conditions (e.g., diabetes, cardiovascular risk factors)
Your best option depends on your medical history, medication interactions, and personal preference for timing and onset.
13) UK Market and Legal/Regulatory Context (Overview)
In the United Kingdom, medicines for erectile dysfunction are regulated under UK medicines legislation and supplied through appropriate channels. Safety and quality requirements apply to all medicines sold to consumers. The availability of specific products may vary by distributor, stock levels, and regulatory approvals.
Patient guidance:
- Choose a reputable online pharmacy with clear identification and regulatory information.
- Ensure packaging and product information match what you expect.
- Do not use counterfeit or unverified products—these may be unsafe and unreliable.
Recent guidance: Clinical management of ED increasingly emphasises safe prescribing, cardiovascular risk assessment, and avoiding unsafe interactions (especially nitrates and certain pulmonary hypertension medicines). Updated advice and local clinical pathways may differ; follow the most current information from your healthcare professional or NHS resources.
14) Delivery and Availability (What to Expect)
Availability of Levitra Professional and vardenafil tablets can vary depending on supplier and stock. Many UK online pharmacies aim to provide clear estimated delivery times and tracking options.
- Dispatch times: typically within working days after order processing.
- Delivery options: may include standard and tracked delivery.
- Packaging: medicines should be delivered in appropriate tamper-evident packaging.
- Cold chain: generally not required for tablets, but confirm for your specific product.
Before ordering: confirm your selected strength, check expiration dates, and ensure the supplied leaflet matches the product description.
15) Frequently Asked Questions (FAQ)
How long before sex should I take Levitra Professional?
Many people take it about 1 hour before sexual activity. Some may respond in as little as 30 minutes. If your meal is heavy, allow extra time because food can delay onset.
Will Levitra Professional work every time?
Most people respond, but ED can be influenced by alcohol, stress, meal timing, underlying health, and medication interactions. If it’s not working as expected, discuss options with a healthcare professional and consider adjusting timing/lifestyle factors.
Can I take it with food?
Yes, but a heavy or high-fat meal may delay the effect. For quicker onset, consider taking it after a lighter meal or finishing a meal earlier.
Can I drink alcohol?
Small amounts may be tolerated, but alcohol can reduce erection quality and increase side effects like dizziness or flushing. Keeping alcohol low is generally recommended.
What medicines should not be taken with vardenafil?
Do not use vardenafil with nitrates (for angina) or riociguat. Use extra caution with alpha-blockers and medicines that affect how vardenafil is broken down in the body. Always check your medicine list with a pharmacist or clinician.
What if I miss a dose?
Levitra Professional is typically taken only when needed before sex. There is usually no reason to “catch up” if you don’t plan sexual activity—follow your usual as-needed plan.
Are there warnings about driving or operating machinery?
Some people experience dizziness or light-headedness. If you feel unwell after taking the medicine, avoid driving or operating machinery until you feel steady.
How quickly does it start to work?
Effects often begin within 30–60 minutes after taking it, with peak levels around 1 hour. Individual results vary.
Is it safe if I have heart problems?
Sexual activity and ED treatment both depend on heart health. Discuss your cardiovascular history with a clinician. Vardenafil should not be used in situations where sexual activity is considered unsafe or where nitrate medicines are used.
What should I do if I have an erection lasting a long time?
If you have a prolonged erection (an erection that persists and does not resolve), seek prompt medical attention. This can be an emergency.
What if it causes headaches or flushing?
These are among the more common side effects. Hydration and adjusting timing (and reducing alcohol) may help. If side effects are severe or persist, seek medical advice.
16) Key Takeaways
- Levitra Professional (vardenafil) is a PDE5 inhibitor for erectile dysfunction.
- It improves erection quality by enhancing blood flow during sexual stimulation.
- Typical timing: about 1 hour before sex (effects may start earlier).
- High-fat meals and alcohol can delay or reduce effects and increase side effects.
- Do not combine with nitrates or riociguat.
- If you have heart disease or take interacting medicines, speak to a healthcare professional before use.
If you’d like, share your situation (age range, any long-term conditions, and the medicines you take) and I can help you understand which interaction categories to discuss with your pharmacist or clinician—without replacing medical advice.

