Weekend Pack – Patient Information Guide (Australia)
Basic Product Information
| International Non-Proprietary Name (INN) | Sildenafil Citrate |
|---|---|
| Australia Brand Names | Weekend Pack (includes prescribed brands such as Viagra®, Kamagra®, Levitra® - vardenafil, Cialis® - tadalafil) |
| ATC Code | G04BE03 |
| Available Forms & Strengths | Tablets: 25 mg, 50 mg, 100 mg (Sildenafil); 10 mg, 20 mg, 50 mg (Vardenafil); 5 mg, 10 mg, 20 mg (Tadalafil) |
| Manufacturers | Pfizer, Bayer, Eli Lilly, Teva, Accord, Mylan, Generic suppliers |
| Prescription Status (Australia) | Prescription only (Schedule 4, S4) |
Mechanism of Action
In Simple Terms: The main ingredient(s) in Weekend Pack, such as sildenafil, vardenafil, or tadalafil, help increase blood flow to the penis by blocking an enzyme (PDE5) that can limit erections. This enables a better erectile response when you are sexually aroused.
For Specialists: PDE5 inhibitors prevent the breakdown of cGMP in the corpus cavernosum, enhancing nitric oxide–dependent vasodilation and increasing penile blood flow during sexual stimulation.
Pharmacokinetics
- Absorption: Rapidly absorbed after oral use; peak plasma concentration reached in 30–120 minutes.
- Metabolism: Primarily hepatic via CYP3A4; active metabolite formed.
- Elimination: Mainly by faeces, secondary urine route.
- Duration of Action: Sildenafil: 4–6 hours; Vardenafil: 4–5 hours; Tadalafil: up to 36 hours (‘weekend pill’ effect).
Use in Everyday Life & Best Practices
The Weekend Pack is designed for adult men with erectile dysfunction (ED), providing several options in one pack for trial or convenience over weekends or special occasions. In the Australian context, healthy lifestyle, regular exercise, and a balanced diet can support ED treatment.
- How to Use: Take as prescribed, usually 30–60 minutes before anticipated sexual activity. Do not exceed one dose in 24 hours for sildenafil/vardenafil or one dose in 36 hours for tadalafil.
- Typical Doses: Recommended starting dose is 50 mg sildenafil, 10 mg vardenafil or tadalafil, adjusted per doctor’s recommendation.
- Best Practice: Consistency in timing and avoiding excessive alcohol can improve effectiveness and safety.
Dosing: Morning vs Evening
- Morning Use: May be beneficial on weekends or days off; increased energy but possible distractions.
- Evening Use: Preferred by many for privacy/relaxation; evening meals and alcohol may delay absorption (see below).
- Tip: Take your medication at a consistent time relative to planned sexual activity. Keep a regular schedule if taking tadalafil daily.
Taking with Food or on an Empty Stomach
- Sildenafil & Vardenafil: Best taken on an empty stomach; high-fat meals (typical Australian steak, chips, creamy dishes) delay absorption by up to 1 hour and reduce effect.
- Tadalafil: Absorption not affected by food; can be taken with or without meals.
If you have an English-style breakfast or hearty dinner, allow at least 2 hours before using Sildenafil or Vardenafil.
Drug and Food Interaction Warnings
| Interaction | Recommendation |
|---|---|
| Alcohol | Use caution – excessive alcohol increases risk of dizziness, lowers effectiveness. |
| Grapefruit juice | Avoid – increases risk of side effects (inhibits CYP3A4 metabolism). |
| Nitrates (GTN, isosorbide etc.) | Contraindicated – severe drop in blood pressure possible. |
| Alpha-blockers (e.g., prazosin, doxazosin) | Start with lowest dose, monitor blood pressure closely. |
| HIV protease inhibitors (ritonavir, saquinavir) | Use with caution – increases PDE5 inhibitors’ blood concentration, raises risk of side effects. |
| Other ED drugs or recreational substances | Do not combine – risk of adverse events increases. |
Indications
| Indication | Approved Status (Australia) | Notes |
|---|---|---|
| Erectile Dysfunction (ED) | Approved | For adult men experiencing difficulty achieving or maintaining an erection suitable for satisfactory sexual activity |
| Pulmonary arterial hypertension | Approved (Sildenafil, specific brands) | Different dosage forms and regimen |
| Raynaud’s phenomenon | Off-label | May be prescribed by specialist for certain circulatory disorders |
Dosing According to Clinical Indications
| Indication | Age Group | Starting Dose | Max Dose | Frequency |
|---|---|---|---|---|
| ED (Sildenafil) | Adult | 50 mg | 100 mg | Once daily |
| ED (Vardenafil) | Adult | 10 mg | 20 mg | Once daily |
| ED (Tadalafil regular) | Adult | 10 mg | 20 mg | Once every 36 hours |
| ED (Tadalafil daily) | Adult | 2.5 mg–5 mg | 5 mg | Once daily |
| ED | Elderly | 25 mg (Sildenafil)/ 5 mg (Vardenafil)/5 mg (Tadalafil) | Consult doctor | As above |
| ED | Pediatric | Not recommended | Not recommended | N/A |
Safety Profile / Side Effects
- Common Side Effects: Headache, facial flushing, nasal congestion, digestive upset, back pain, muscle aches, dizziness, mild visual disturbances (e.g., blue-tinged vision for sildenafil)
- Less Common: Palpitations, mild skin rash, temporary hearing changes
- Rare but Serious: Chest pain, priapism (persistent not-wanted erection >4h), sudden visual loss, severe allergic reaction
- Warnings: Do not take if you are using nitrates or have serious heart/liver disease. See immediate medical attention for severe chest pain or prolonged/painful erection.
Guidelines for Proper Use
- Always use as directed by your doctor or pharmacist.
- Do not share with others, even if they have similar symptoms.
- Take only one kind of PDE5 inhibitor at a time (do not combine brands).
- Store at room temperature, away from moisture and light.
- Report any severe or persistent side effects to your GP or pharmacist.
- Have regular heart and blood pressure checks when using ED medications.
- Inform your prescriber about all current medications and conditions.
Alternative Treatment Options
- Other Oral Agents: Avanafil (not widely available in AU), other forms and doses of sildenafil, vardenafil, tadalafil.
- Medical Devices: Vacuum erection devices (reimbursed for certain conditions).
- Injectable Therapies: Alprostadil (prescription by specialist, subsidised for certain patients).
- Psychological Therapy: Appropriate if psychogenic causes detected; can be combined with medication.
- Pros & Cons Table:
| Option | Pros | Cons |
|---|---|---|
| PDE5 inhibitors ('Weekend Pack') | Fast, effective, convenient for most users | Requires prescription; contraindications; some adverse effects |
| Vacuum pump | No drugs; effective for some men; reimbursed in eligible cases | Bulky; learning curve; mechanical |
| Injectable alprostadil | Works in many cases when pills fail | Injection discomfort; requires training; specialist prescription |
| Psychotherapy/counselling | Addresses non-physical causes; no medical side effects | May require long-term commitment; less effective if organic ED |
Legal, Registration, and Reimbursement Status in Australia
- Registered with the Therapeutic Goods Administration (TGA).
- Prescription-only medicine (Schedule 4).
- Medicare/PBS: Not subsidised for ED except for certain specified conditions and post-surgical cases (e.g., prostate cancer recovery).
- Legal possession only with a valid prescription in your name.
Latest Research/Clinical Guidance (2022–2025)
- PDE5 inhibitors remain the gold standard, first-line oral treatment for ED (Australian recommendations, see RACGP Clinical Guidelines, 2024).
- Recent data (2022-2025) confirm high tolerability and real-world effectiveness in the Australian population.
- Combination with lifestyle modification (diet, exercise, counselling) leads to the best long-term outcomes [Lancet Urology, 2023].
- Safety updates stress avoidance with nitrates/heart disease; prompt treatment for priapism [European Association of Urology, 2024].
Availability and Delivery in Australia
| Pack Size | Tablets Included | Indicative Price (AUD) | Delivery Times |
|---|---|---|---|
| Trial Pack | 6 assorted tablets | $29–$59 | Sydney: 1–2 days, Melbourne: 2–3 days, Brisbane: 2–3 days, Perth: 3–5 days |
| Weekend Pack (Standard) | 12 assorted tablets | $65–$99 | Sydney: 1–2 days, Melbourne: 2–3 days, Brisbane: 2–3 days, Perth: 3–5 days |
| Larger Supply | 24–40 tablets | $105–$190 | All major AU capitals: 2–4 days |
- Express and discreet packaging available for all online orders.
- Delivery required photo ID and prescription check on collection.
FAQ – Patient Questions and Answers
- 1. Can I use the Weekend Pack with other medications?
Some medicines can interact with PDE5 inhibitors—including heart, blood pressure, and HIV drugs. Always provide your medication list to your pharmacist or GP before starting. - 2. How long will the effects last?
This depends on the pill taken: Sildenafil/Vardenafil last up to 4-6 hours, while Tadalafil may last up to 36 hours (‘weekend pill’). - 3. Can I drink alcohol with the Weekend Pack?
Small amounts won’t typically cause major issues, but heavy drinking can impair the medicine’s effectiveness and raise your risk of side effects. It is best to limit or avoid alcohol when using ED treatments. - 4. What should I do if I miss a dose?
These medications are taken “as needed” (not daily, except daily tadalafil). If you miss a daily dose, just take it the next day—do not double up to make up for missed tablets. - 5. Is the Weekend Pack suitable if I have a chronic disease?
It depends. Tell your doctor if you have heart, liver, or kidney disease, or if you take medication for chest pain. ED tablets may not be safe for all chronic conditions.
For personalised advice and safe use of the Weekend Pack, contact your Australian GP or talk to our registered pharmacists. We are here to support your health and well-being.
