Levitra Professional (Vardenafil) – Patient-Friendly Guide
Levitra Professional is a brand of vardenafil, a medicine used to help men with erectile dysfunction (ED). This guide explains how vardenafil works, how to take it, what to expect, key safety information, and practical tips. It also covers interactions (including with alcohol and other medicines) and relevant considerations for people in Australia.
Important: This information is for education and does not replace advice from a healthcare professional. Always read the product packaging and follow professional guidance.
1) Basic product information
| Feature | Details |
|---|---|
| Medicine name | Levitra Professional (Vardenafil) |
| What it contains | Vardenafil (a PDE-5 inhibitor) |
| What it helps with | Improving erections in men with erectile dysfunction |
| How it works | Helps relax blood vessels in the penis to improve blood flow (with sexual stimulation) |
| Typical administration | Tablets taken before sexual activity |
| Common dosing frequency | Once daily in some regimens; typically as-needed dosing is used for ED in clinical practice |
Availability and pack sizes can vary. Your Australian pharmacy or supplier will provide the most up-to-date product details.
2) How Levitra Professional works (mechanism of action)
Vardenafil belongs to a group of medicines called PDE-5 (phosphodiesterase type 5) inhibitors. PDE-5 is an enzyme that breaks down a natural chemical called cGMP (cyclic guanosine monophosphate). In sexual arousal, the body increases nitric oxide, which increases cGMP and helps relax smooth muscle tissue in the penis, supporting erection.
By inhibiting PDE-5, vardenafil helps maintain higher cGMP levels, which supports blood flow to the penis and makes it easier to achieve and maintain an erection. It does not automatically cause an erection—sexual stimulation is still required.
- Supports erection by improving blood flow
- Works only in response to sexual stimulation
- Not a testosterone booster and not an aphrodisiac
3) Pharmacokinetics: absorption, onset, and duration
Pharmacokinetics describes how the body absorbs, processes, and eliminates a medicine. For vardenafil, key points commonly seen in clinical use include:
- Absorption: Vardenafil is absorbed after oral dosing. Peak levels typically occur within a few hours.
- Onset: Some men notice effects within about 30–60 minutes, though timing can vary.
- Duration: Effects may last long enough for most sexual activity windows, often for up to 4–6 hours (individual variation is common).
- Metabolism: Primarily metabolised by liver enzymes (notably CYP3A4 and related pathways).
- Elimination: Metabolites are removed mainly through hepatic and renal processes.
Factors such as age, liver function, kidney function, and other medicines can influence how quickly and strongly vardenafil works.
4) Typical use and timing
When to take it
Levitra Professional is generally taken before planned sexual activity. Many people aim for a dose about 30 to 60 minutes beforehand. Some may prefer a longer lead time depending on personal response and whether food is involved.
How often to use
The safest approach is to follow the dose instructions provided by your clinician and/or the product label. In general, vardenafil is used as needed for erectile dysfunction, and the maximum frequency is set to minimise adverse effects.
If you are unsure about your exact dosing schedule, check with your healthcare professional or your pharmacy before taking a repeat dose.
5) Indications (what it is used for)
Levitra Professional (vardenafil) is indicated for the treatment of erectile dysfunction (ED) in adult men. ED refers to difficulty achieving and/or maintaining an erection sufficient for satisfactory sexual performance.
- Erectile dysfunction – helping improve erections with sexual stimulation
It is not intended for use by women, and it is not used for sexual desire enhancement.
6) Dosing: practical guidance
Dosing depends on factors such as age, overall health, liver and kidney function, and any interacting medicines. Because product strengths vary, always use the specific strength and instructions on your pack.
Common approach in ED therapy
- Start low if you are older or have health conditions that may increase sensitivity.
- Adjust based on response (ability to achieve erection and the presence of side effects).
- Do not exceed the maximum recommended frequency in a 24-hour period.
Missed dose
As vardenafil is taken before sex, there is generally no “missed dose” concept. If you forget, wait for the next planned time rather than taking extra doses.
Special populations (when extra care may be needed)
- Older adults: may be more sensitive to blood pressure changes.
- Liver impairment: may require lower dosing or avoidance, depending on severity.
- Kidney impairment: dosing may need adjustment in some cases.
- Concomitant medicines: interactions can require dose reduction.
If you have any of the above, consult a healthcare professional for personalised guidance.
7) Food interactions (including what to eat)
Food can affect how quickly vardenafil works. A heavy, high-fat meal may delay absorption and slow onset, making timing less predictable.
- Best approach: If you want more predictable onset, consider taking vardenafil on a relatively lighter meal.
- Timing may need adjustment: after a large meal, you may need to take it earlier than usual.
- Alcohol and meals: alcohol can worsen ED and increase dizziness risk when combined with PDE-5 inhibitors.
8) Alcohol interactions and safety
Alcohol can contribute to erectile difficulties and can increase side effects such as dizziness and light-headedness. When combined with vardenafil, the combination may lead to more noticeable blood pressure changes.
Practical guidance
- Limit alcohol: keeping alcohol intake moderate can improve both erection quality and safety.
- Avoid binge drinking: higher alcohol amounts increase risk of fainting, poor coordination, and unsafe decisions.
- Stand up carefully: if you feel light-headed, sit or stand slowly.
If you notice significant dizziness, headache, or visual changes, seek advice and avoid further dosing until you have spoken with a clinician.
9) Medicine interactions (important)
PDE-5 inhibitors can interact with several medicines—particularly those that affect blood pressure or nitric oxide pathways. Always provide your pharmacy with a complete list of your current medicines, including “over-the-counter” products and supplements.
Do not combine with nitrate medicines
A key safety rule is that vardenafil should not be used with nitrate medicines (commonly used for chest pain/angina) because this can cause a potentially dangerous drop in blood pressure. Examples may include (depending on country and formulation) glyceryl trinitrate and other nitrates.
Use caution with “alpha-blockers”
Medicines used for prostate symptoms (alpha-blockers) and some blood pressure treatments can also lower blood pressure. The combination may cause dizziness or faintness in some people, especially if doses are started or changed.
Strong enzyme inhibitors (CYP3A4) may increase vardenafil levels
Some medicines can increase vardenafil exposure, making side effects more likely. This includes certain antifungal and antiviral medicines and some antibiotics.
Other PDE-5 inhibitors
Avoid using vardenafil together with other medicines in the same PDE-5 class (e.g., sildenafil, tadalafil) at the same time.
Riociguat (pulmonary hypertension medicine)
Combining PDE-5 inhibitors with riociguat can also raise safety concerns related to blood pressure.
Common interaction-related medicines to discuss
- Medicines for angina/chest pain (especially nitrates)
- Blood pressure medicines (particularly multiple agents)
- Alpha-blockers for urinary symptoms
- Antifungal/antiviral agents (some can affect vardenafil metabolism)
- Other ED medicines
- “Lifestyle” products containing undisclosed ingredients (avoid)
If you’re unsure about whether a medicine interacts with vardenafil, speak to a clinician or pharmacist before using Levitra Professional.
10) Safety profile: common and serious side effects
Like all medicines, vardenafil can cause side effects. Many people experience mild, short-lived effects. However, some side effects require prompt medical attention.
Common side effects
- Headache
- Flushing (warmth/redness)
- Stuffy or runny nose (nasal congestion)
- Dizziness or light-headedness
- Indigestion or nausea
- Back pain or muscle aches (reported with PDE-5 inhibitors)
Less common but important symptoms
- Vision changes or sudden worsening of eyesight
- Hearing changes (rare)
- Chest pain or severe shortness of breath
- Fainting or severe dizziness
Emergency situations
Seek urgent medical attention if you experience:
- Sudden severe dizziness or fainting
- Chest pain not typical for you
- Vision loss or sudden eye symptoms
- Prolonged erection (an erection lasting longer than expected) which should be treated as urgent
Contraindications / when not to use (general guidance)
- Use is generally not appropriate with nitrate medicines.
- Safety concerns may apply if you have certain cardiovascular conditions or instability.
- Discuss with a clinician if you have low blood pressure, recent strokes, or other significant medical issues.
People with ED often have underlying cardiovascular risk factors, so it’s important to address overall health, not only medication.
11) Practical use tips for the best results
- Ensure sexual stimulation: vardenafil helps your body respond; it doesn’t replace arousal.
- Timing matters: for many, 30–60 minutes before sex works well; adjust if you find onset is delayed.
- Keep meals lighter: a heavy/fatty meal may delay effects.
- Start with a conservative dose plan: if you’re new to vardenafil, follow your clinician’s recommended starting strength.
- Watch for dizziness: sit down if you feel light-headed; avoid driving until you know how you react.
- Avoid mixing with nitrates and be cautious with other blood pressure medicines.
- Don’t “double up”: if it doesn’t work as expected, avoid extra doses—review timing, food, and interactions with a professional.
Lifestyle factors also play a major role in ED. Sleep, exercise, stress management, reducing smoking, and moderating alcohol can all improve results.
12) Alternative options for erectile dysfunction
If Levitra Professional isn’t suitable or doesn’t work well, several alternatives may be considered. Options can include:
- Other PDE-5 inhibitors: sildenafil, tadalafil, and others. They differ in onset and duration.
- Different dosing strategies: some people may benefit from changing timing or dose (under guidance).
- Non-medicine options: vacuum erection devices, counselling/sex therapy, and addressing contributing health factors.
- Hormone evaluation: if symptoms suggest hormonal issues, a clinician may assess testosterone or related factors.
- Other prescription treatments: depending on the cause and medical suitability.
The best choice depends on your health, other medications, and how you respond to PDE-5 inhibitors.
13) Market and legal context for Australia
In Australia, medicines are regulated under the Therapeutic Goods Administration (TGA) framework. ED medicines such as vardenafil are subject to prescribing and supply rules that may include:
- Specific product status (e.g., whether a medicine is prescription-only or has particular supply conditions).
- Requirements for safe supply, including patient screening for contraindications and interactions.
- Additional obligations for online pharmacies to verify identity and ensure medicines are supplied lawfully and safely.
For the most accurate and compliant information, refer to official Australian resources (such as the TGA website) and consult your pharmacy about supply conditions.
Recent guidance: In recent years, Australia and comparable regulators have emphasised safer online supply, avoidance of counterfeit medicines, and patient screening for high-risk interactions (particularly with nitrate therapies and significant cardiovascular disease). Always choose a legitimate, compliant supplier.
14) Delivery and availability (Australia)
Delivery timelines and availability depend on the supplier, stock status, and shipping method. When ordering online, reputable pharmacies will typically:
- Confirm product details and strength
- Provide clear packaging and labelling information
- Use secure shipping and tracking
- Outline expected delivery times for Australian locations
If a product is temporarily out of stock, a reputable pharmacy may offer alternatives or restocking timelines. Always ensure the product you receive matches the listed strength and brand.
Tip for safety: Avoid buying “unbranded” or suspicious products online. Counterfeits can be unsafe and may not contain the amount of vardenafil stated.
15) FAQs about Levitra Professional (Vardenafil)
How quickly does Levitra Professional work?
Many people notice effects within 30–60 minutes, though peak effect may take longer. If you’ve eaten a heavy meal, onset may be delayed.
How long will it last?
The duration varies, but effects often last long enough for several hours (commonly around 4–6 hours for many users). Individual response differs.
Do I need to take it every day?
For most ED use, it is taken before sexual activity rather than continuously. Some regimens may involve regular dosing—follow the schedule recommended by your healthcare professional and the product instructions.
Can I take it with food?
Yes, but a heavy or high-fat meal may delay effects. Consider a lighter meal if you want more predictable timing.
Is it safe to drink alcohol?
Alcohol can worsen erectile function and may increase dizziness or blood pressure-related side effects. If you choose to drink, keep it moderate and avoid binge drinking.
What medicines should I avoid?
Do not combine vardenafil with nitrate medicines (for chest pain/angina). Also use caution with alpha-blockers and medicines that interact with vardenafil metabolism. Provide your full medication list to your pharmacist for personalised interaction checking.
What if it doesn’t work for me?
If a dose isn’t effective, don’t increase or repeat doses too quickly. Common factors include incorrect timing, heavy meals, inadequate sexual stimulation, or interacting medicines. Consult a clinician to adjust the plan.
Are there any warning signs I should stop and seek help for?
Seek urgent care for symptoms such as severe dizziness/fainting, chest pain, sudden vision/hearing changes, or an erection that lasts longer than expected.
Can I drive after taking it?
If you feel dizzy or light-headed, avoid driving or operating machinery until you know how vardenafil affects you.
Can Levitra Professional be used if I have diabetes or heart disease?
Many men with chronic conditions use PDE-5 inhibitors safely, but it depends on the specifics of your health and medications. Discuss with a healthcare professional—especially if you have cardiovascular disease or take medicines that affect blood pressure.
Is Levitra Professional an aphrodisiac?
No. It helps the body’s normal response to sexual stimulation. It doesn’t create desire by itself.
16) Summary
Levitra Professional (vardenafil) is a PDE-5 inhibitor used to improve erections in men with erectile dysfunction. It works by supporting blood flow in the penis during sexual stimulation. Effects are often noticed within about 30–60 minutes, and timing can be influenced by heavy meals and other factors.
For safety, avoid dangerous interactions—especially nitrate medicines—and be cautious with alcohol, alpha-blockers, and drugs that affect vardenafil metabolism. If you experience severe side effects or warning symptoms, seek medical help promptly.
For the best outcome, use the product as directed, consider lifestyle improvements, and consult a healthcare professional if you have questions about suitability, dosing, or interactions.

