Levitra Professional (Vardenafil) — Patient Guide (Australia)
Levitra Professional (vardenafil) is a medicine used to treat erectile dysfunction (ED) in adult men. It helps you achieve and maintain an erection suitable for sexual activity by improving blood flow to the penis. This guide explains how it works, when to take it, how to manage common interactions, and what to expect.
Please note: information below is general and not a substitute for personalised medical advice. If you have questions about your suitability—especially if you take other medicines or have heart or blood pressure conditions—speak with a healthcare professional.
Basic Product Information
- Active ingredient: Vardenafil
- Brand example: Levitra Professional
- Medicine type: Phosphodiesterase type 5 (PDE5) inhibitor
- What it’s for: Erectile dysfunction (ED)
- How it’s taken: Oral tablets
Availability and exact strengths can vary by product presentation. Your local pharmacy listing will show the specific strength (mg) and pack details.
How Levitra Professional Works (Mechanism of Action)
Erection requires increased blood flow to the penile tissue, which happens during sexual stimulation. Vardenafil is a PDE5 inhibitor. PDE5 is an enzyme that helps break down cGMP (cyclic guanosine monophosphate) in smooth muscle cells of the penis.
By inhibiting PDE5, vardenafil:
- helps maintain higher cGMP levels
- relaxes smooth muscle in blood vessels
- improves blood flow during sexual arousal
- supports achieving and maintaining an erection
Importantly, vardenafil does not automatically cause an erection without sexual stimulation. It works by enhancing the normal erectile response.
Pharmacokinetics (Absorption, Onset, Duration)
Pharmacokinetics describes how the body absorbs, processes, and eliminates a medicine. For vardenafil, key points include:
- Absorption: Vardenafil is absorbed after oral dosing. Food can affect how quickly it starts to work.
- Onset of effect: Many people experience effect within about 30–60 minutes. Some may feel earlier or later depending on individual factors and meal timing.
- Peak concentration: The medicine reaches peak levels roughly within a few hours (timing varies by formulation and individual response).
- Duration: Effects can last long enough for sexual activity over several hours for many men, though the “window” can vary.
- Metabolism and elimination: Vardenafil is metabolised primarily by the liver (CYP enzymes) and excreted via the kidneys and bile. Kidney and liver function can influence exposure.
If you have liver disease, kidney disease, or take medicines that interact with liver enzymes, the safest dosing may differ.
Typical Use and Indications
Indication
Levitra Professional (vardenafil) is indicated for the treatment of erectile dysfunction (ED) in adult men. ED is the inability to achieve or maintain an erection sufficient for satisfactory sexual performance.
Who it may help
- ED related to blood flow issues
- ED associated with ageing or other risk factors
- ED where PDE5 inhibitors are clinically appropriate
Who it may not suit
People should be cautious or may be advised not to use vardenafil if they have certain cardiovascular conditions, low blood pressure, or they take medicines that can cause dangerous interactions (see “Interactions” below).
Dosing — How Much and How Often
The correct dose depends on your response, tolerability, age, and interacting medicines, as well as whether you have liver or kidney impairment. Follow the dose listed on your product pack or the dosing instructions provided by your healthcare professional.
Common starting approach (general guidance)
- Many men start at a lower dose to assess side effects and response.
- Your clinician may adjust the dose up or down based on effectiveness and tolerability.
Frequency
In general, PDE5 inhibitors are taken only when needed prior to sexual activity, rather than continuously. Do not exceed the maximum frequency recommended for your specific product and strength.
Practical “when to take it”
- Take vardenafil before planned sexual activity.
- Allow time for absorption—often 30–60 minutes is effective for many men.
- If food delayed absorption, consider adjusting meal timing (see food section).
Table: Example dosing timing overview
| Situation | Typical timing | What to expect |
|---|---|---|
| Taken on an empty or light stomach | ~30–60 minutes before sex | Faster onset; easier to predict effect |
| After a heavy, fatty meal | May need earlier timing | Onset may be slower; reduced peak effect for some |
| First attempt / adjusting to dose | Plan and try once with comfortable timing | Helps identify your personal response window |
Timing: When Does Levitra Professional Work?
Many men experience improved erectile performance within about 30–60 minutes. Peak effects may occur later, and the overall period of benefit often lasts long enough for sexual activity.
- For best predictability: take it around the same time before planned sex.
- Consider your meal: if you eat a large, fatty meal, the start may be delayed.
- Give it a trial: if you haven’t used a PDE5 inhibitor before, the first experience may help you estimate timing and suitability.
Food Interactions (What to Eat/When)
Food—especially large, high-fat meals—can slow absorption and delay onset. This does not necessarily stop the medicine from working, but it may reduce “onset speed” and sometimes the intensity at the beginning.
Practical tips
- Prefer a light meal when planning to use vardenafil.
- If you eat a heavy meal, consider taking the tablet earlier than you would on an empty stomach.
- Avoid alcohol around the same time (see alcohol section), as it can also affect erection quality.
Alcohol: Effects and Safety Considerations
Drinking alcohol can contribute to ED by affecting blood vessels, nervous system signalling, and sexual confidence. Alcohol can also increase dizziness or low blood pressure risks when combined with medicines that affect circulation.
General guidance
- Keep alcohol intake moderate where possible.
- Avoid “binge” drinking, especially before a new trial of vardenafil.
- If you feel light-headed, dizzy, or unwell, stop alcohol and do not take additional doses.
If you have cardiovascular disease, a history of fainting, or take blood pressure medicines, ask a healthcare professional for tailored advice.
Medicine Interactions (Important)
Some medicines can interact with vardenafil and change safety or effectiveness. The most important concern is medicines that can cause dangerous blood pressure lowering when taken together.
Absolute/major interaction: nitrates and “nitric oxide donors”
Do not use vardenafil with nitrates (often used for angina/heart pain), or with medications that release nitric oxide. The combination can cause a significant drop in blood pressure.
- Nitroglycerin (glyceryl trinitrate)
- Isosorbide mononitrate/dinitrate
- Other nitrate-based anti-angina treatments
Major interaction: certain “riociguat” type medicines
Medicines like riociguat (for certain lung/blood pressure conditions) can also interact and may be contraindicated with PDE5 inhibitors.
Alpha-blockers (prostate/BPH or blood pressure)
Some men take alpha-blockers for urinary symptoms or blood pressure. Combined use can increase the risk of dizziness or low blood pressure, particularly during the first dose or if dosing is changed.
If you take an alpha-blocker, your clinician may recommend a stable alpha-blocker dose first and then a cautious starting dose of vardenafil.
Strong CYP3A4 inhibitors (raise vardenafil levels)
Certain medicines can increase vardenafil concentration, potentially raising side effects. Examples include some antifungals and some HIV treatments. Dosage adjustment or avoidance may be needed.
Other interacting medicines
- Other PDE5 inhibitors: Do not combine vardenafil with sildenafil or tadalafil.
- Some antibiotics/antivirals: can affect metabolism.
- Other blood pressure medicines: may increase risk of low blood pressure symptoms.
- “Lifestyle” drugs: recreational substances can increase cardiovascular risk.
What to do
- Check your medicines list carefully before using vardenafil.
- Tell your healthcare professional about all prescription and non-prescription medicines, vitamins, and herbal products.
- If you develop severe dizziness, fainting, chest pain, or an erection lasting too long, seek urgent care.
Safety Profile and Common Side Effects
Like all medicines, vardenafil can cause side effects. Many are mild and temporary, but some effects require medical attention.
Common side effects
- Headache
- Flushing (warmth/redness)
- Indigestion or stomach discomfort
- Blocked or runny nose (nasal congestion)
- Dizziness
- Mild visual changes (such as sensitivity to light or altered colour perception in some men)
Less common but serious warning signs
- Sudden vision loss or significant visual disturbance
- Sudden hearing loss or ringing in the ears
- Chest pain, severe dizziness, fainting
- Priapism: an erection lasting 4 hours or more
- Signs of severe allergic reaction (swelling of face/lips, difficulty breathing)
If you experience any serious symptoms, seek urgent medical attention.
When to be extra cautious
- Known heart disease or unstable angina
- Low blood pressure or fainting history
- Severe liver impairment
- Severe kidney impairment
- Blood disorders that increase priapism risk (e.g., sickle cell disease)
Practical Use Tips for Better Results
Many factors influence ED and the response to PDE5 inhibitors. Following practical tips can improve your experience.
- Use it with sexual stimulation: the medicine supports the erection response, but arousal is still required.
- Plan timing: allow adequate time before sex; adjust if you ate a heavy meal.
- Start with a dose you can tolerate: if you’re new to ED medicines, follow a cautious starting strategy.
- Manage anxiety and stress: performance pressure can reduce erection quality.
- Consider lifestyle: regular exercise, healthy weight, smoking cessation, and limiting alcohol may improve ED.
- Avoid smoking close to use: nicotine affects blood vessels.
- Don’t “stack” doses: taking extra tablets won’t help if timing or meal factors are the issue.
If you try vardenafil on multiple occasions and it doesn’t work as expected, discuss next steps with a healthcare professional. Sometimes dose adjustment, changing timing, or selecting an alternative PDE5 inhibitor can help.
Alternative Options
Depending on your health profile and preferences, alternative treatment options for ED may include:
Other PDE5 inhibitors
- Sildenafil (e.g., similar class)
- Tadalafil (often longer duration for some men)
- Other vardenafil formulations (availability may differ)
Non-PDE5 options (doctor-guided)
- Vacuum erection devices
- Injections or intraurethral therapies
- Psychosexual counselling for anxiety-related ED
- Management of underlying contributors (diabetes, cardiovascular risk, hormonal issues)
If ED is new or worsening quickly, it’s important to rule out underlying health causes, including cardiovascular disease.
Market and Legal Context for Australia
In Australia, ED medicines such as vardenafil are regulated medicines and may be supplied only through appropriate channels in line with Australian laws and pharmacy standards. Requirements can vary based on product category, strength, and the supply model used by each provider.
When purchasing online, choose reputable, licensed pharmacies and ensure the product matches the listing description (active ingredient, strength, and form). Always verify the compliance information displayed at checkout and ensure secure packaging and authenticity.
Recent guidance (general)
Regulatory and clinical guidance for ED therapies commonly emphasises:
- screening for cardiovascular suitability
- avoiding contraindicated drug combinations (especially nitrates)
- monitoring for side effects and rare serious events
- correct dosing and patient education to reduce misuse
- safe handling and supply through authorised services
If you’re unsure about suitability, a healthcare professional can review your medical history and medications for safe use.
Delivery and Availability
Availability can vary depending on stock and supplier arrangements. When ordering through an online pharmacy, you can typically expect:
- Pack confirmation: the listing should clearly show the strength (mg) and pack size.
- Confidential delivery: discreet packaging is commonly offered to support privacy.
- Delivery timeframe: depends on your location (metro vs. regional) and carrier service.
- Cold-chain: vardenafil tablets generally do not require refrigeration, but follow the product label.
For the most accurate delivery estimate, check the shipping information on the pharmacy website at the time of purchase.
FAQ — Common Questions About Levitra Professional (Vardenafil)
1) What is Levitra Professional used for?
Levitra Professional (vardenafil) is used to treat erectile dysfunction by helping you achieve and maintain an erection during sexual stimulation.
2) How quickly does it work?
Many men notice effect within 30–60 minutes. Heavy meals may delay onset, so timing may need adjustment.
3) Can I take it after eating?
Yes, but a heavy, fatty meal may slow absorption and delay onset. For easier predictability, take it on an empty or light stomach.
4) Can I drink alcohol with vardenafil?
Moderate alcohol may be tolerated by some men, but alcohol can worsen erection quality and increase dizziness risk. Avoid binge drinking, and do not take extra doses if you feel unwell.
5) What medicines should not be taken with Levitra Professional?
Avoid vardenafil with nitrates (anti-angina medicines) and similar nitric oxide therapies, as this can cause dangerous blood pressure lowering. Also be cautious with certain other medicines, such as riociguat and some alpha-blockers. Always check your full medicine list with a healthcare professional or pharmacist.
6) What if it doesn’t work?
First consider timing, meal content, and sexual stimulation. If it consistently doesn’t work, do not increase dose on your own. A clinician can assess whether a dose adjustment, different PDE5 inhibitor, or evaluation of underlying causes is appropriate.
7) How often can I take it?
Follow the dosing schedule recommended for your specific product strength. PDE5 inhibitors are typically taken only when needed and not more frequently than advised.
8) Are there serious side effects?
Most side effects are mild (e.g., headache, flushing). Seek urgent care for warning signs such as chest pain, fainting, sudden vision or hearing changes, or an erection lasting 4 hours or more.
9) Can I use it if I have heart disease?
You may still be eligible, but ED medicines can affect blood flow and blood pressure. A healthcare professional should assess your cardiovascular suitability, especially if you have angina, recent heart events, or complex blood pressure management.
10) Does vardenafil affect fertility or hormones?
Vardenafil is designed to support erections through blood flow. It is not typically used to treat fertility or hormone conditions. If you have concerns about hormones or fertility, discuss them with a healthcare professional.
Key Takeaways
- Levitra Professional (vardenafil) supports erections by improving blood flow during sexual stimulation.
- Typical onset is 30–60 minutes; heavy meals can delay onset.
- Do not combine with nitrates or certain interacting medicines.
- Use practical strategies: plan timing, keep meals lighter, and limit alcohol.
- Seek urgent help for serious symptoms, especially priapism or sudden vision/hearing changes.
If you would like, share your general health profile (e.g., age range, existing conditions, and the medications you take), and we can help you identify questions to discuss with your healthcare professional—without replacing medical advice.

