Cialis Black (Tadalafil): Comprehensive Patient Information for Australia
Basic Product Information
| International Non-Proprietary Name (INN) | Tadalafil |
|---|---|
| Australia Brand Names | Cialis®, Adcirca®, Tadalafil Sandoz®, others |
| ATC Code | G04BE08 |
| Available Forms & Strengths | Film-coated tablets: 5 mg, 10 mg, 20 mg, 40 mg, and some higher-dose formulations (e.g., "Cialis Black" 80 mg, typically obtained via special order/online sources) |
| Manufacturers (AU) | Eli Lilly Australia, Sandoz, Apotex, Teva, Mylan, several generics |
| Prescription Status | Prescription Only Medicine (Schedule 4, S4) |
Mechanism of Action
Patient-friendly explanation: Tadalafil works by relaxing the blood vessels in the penis, allowing increased blood flow when you are sexually aroused. This makes it easier to get and maintain an erection.
Specialist detail: Tadalafil is a selective phosphodiesterase type-5 (PDE5) inhibitor. It enhances the effects of nitric oxide by inhibiting PDE5 in the smooth muscle of the corpus cavernosum, increasing cGMP, and promoting vasodilation and erection in the presence of sexual stimulation. It is also approved for pulmonary arterial hypertension and benign prostatic hyperplasia (BPH).
Pharmacokinetics
- Absorption: Rapid and well absorbed orally; peak plasma concentrations in 30 minutes to 6 hours (usually ~2 hours).
- Metabolism: Mainly in the liver via CYP3A4.
- Elimination: Primarily excreted in faeces (~61%) and urine (~36%).
- Half-life: Longest in class (~17.5 hours), allowing for “weekend” effect.
- Duration of action: Up to 36 hours for erectile dysfunction (ED).
Cialis Black in Everyday Life: Best Practices for Use
- Take as directed by your doctor – usually 30–60 minutes before planned sexual activity.
- “Cialis Black” typically refers to an 80 mg tablet, which is not a standard dose in Australia; standard maximum dose is 20 mg per day for ED. Higher doses (e.g., 40–80 mg) may carry increased risk of side effects and should only be used if specifically prescribed and supervised.
- Frequency: Not more than once per day. For daily therapy, 2.5–5 mg once daily is typical.
- Plan ahead: Its long duration supports spontaneity (“weekend pill”)—one dose may last for up to 36 hours.
- Swallow tablets whole with water, with or without food.
Morning vs Evening Dosing: Tips and Considerations
- Morning dose: May be preferred for planned morning/afternoon activity; wakes up with readiness.
- Evening dose: Common for most users in context of planned evening intimacy; can provide coverage for following morning as well.
- Best practice: Try to take at the same time each day if on daily regimen. Align with lifestyle and routine.
- Special note: Avoid taking two doses closer than 24 hours apart unless directed by a doctor.
Taking with Food or on an Empty Stomach: Australia Dietary Context
- Food effect: Tadalafil can be taken with or without meals. Fatty meals have little impact on absorption (unlike sildenafil/Viagra).
- Alcohol: Moderate alcohol intake allows use but excess alcohol (>5 units) can increase risk of side effects (e.g., dizziness, hypotension).
- English diet specificity: No dietary restrictions required; works well around typical Australian meals (including high-protein, BBQ, or standard fare).
Interaction Warnings
| Type | Interaction | Recommendation |
|---|---|---|
| Food | Minimal effect—safe with meals | No action needed |
| Alcohol | Can increase risk of low blood pressure, dizziness | Limit to <5 units (e.g., two standard drinks) |
| Grapefruit Juice | May increase levels of tadalafil | Avoid or limit intake |
| Nitrates (angina meds) | Severe risk of dangerous drop in blood pressure | Never use together |
| Alpha-blockers (for BP or prostate) | Additive blood pressure lowering effect | Use with caution; separate doses by several hours |
| Other ED meds (sildenafil, vardenafil) | Increased risk of side effects | Do not combine |
| HIV Protease Inhibitors, Ketoconazole, etc. (CYP3A4 inhibitors) | Can increase blood levels of Tadalafil | Discuss dose adjustment with your GP |
Indications
| Official (TGA Approved) | Off-label (Consult Specialist) |
|---|---|
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Dosing According to Indication
| Indication | Adults | Elderly (≥65) | Paediatric Use |
|---|---|---|---|
| Erectile Dysfunction - As Needed | 10 mg prior to sex (range: 5–20 mg), max once daily | Start low (5–10 mg); consider comorbidities | Not recommended |
| Erectile Dysfunction - Daily | 2.5–5 mg daily, same time each day | As above | Not recommended |
| BPH (±ED) | 5 mg daily | 5 mg; adjust for renal/hepatic impairment | Not recommended |
| Pulmonary Arterial Hypertension | 40 mg once daily (as Adcirca®) | Consult specialist | Consult specialist |
Note on “Cialis Black” (80 mg): Double the typical highest daily dose—use only on specific medical advice and supervision for select cases.
Safety Profile and Side Effects
| Common Side Effects (>1%) | Rare/Serious Effects (<1%) | Warnings |
|---|---|---|
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Guidelines for Proper Use: Patient Advice from Australia Pharmacists
- Always take the exact dose prescribed by your GP or urologist.
- Do not buy formulas like “Cialis Black” (80mg) from unregulated online sources—these are not TGA-approved and may not guarantee purity or safety.
- Never use recreationally or exceed prescribed frequency.
- Inform your doctor of any other medications (including herbal and over-the-counter products) you take.
- Monitor for side effects—seek medical help for vision/hearing changes or erections lasting longer than 4 hours.
- Store tablets at room temperature, out of reach of children.
- If you forget a dose (daily use): Take when remembered unless close to next dose—do not double up.
- For further help, consult your local Australia pharmacist or GP practice nurse.
Alternative Treatment Options
- Sildenafil (Viagra®): Shorter-acting, well-known, less expensive; peak effect with empty stomach, lasts 4–6 hrs.
- Vardenafil (Levitra®): Similar to sildenafil, slightly longer effect, tolerable for many who fail sildenafil.
- Avanafil (Spedra®): Very fast onset (15–30 minutes), shorter duration.
- Alprostadil: Injectable or intraurethral, used if oral drugs not effective.
- Non-drug options: Vacuum pumps, psychosexual therapy, penile implants.
- Current PBS status: PDE5 inhibitors are not subsidised by the PBS for ED, but may be for PAH.
Legal, Registration, and Reimbursement Status in Australia
- Therapeutic Goods Administration (TGA): Cialis (Tadalafil) is fully registered for ED, BPH, and PAH.
- Prescription requirements: S4 medicine—doctor prescription required; GP or specialist can prescribe.
- PBS (Pharmaceutical Benefits Scheme): PBS subsidises Tadalafil only for pulmonary arterial hypertension. No PBS rebate for treatment of ED or BPH.
- Pharmacy supply: Available in all registered community pharmacies upon presentation of a valid prescription.
Latest Research & Clinical Guidance (2022–2025)
Leading clinical guidelines (AUA, EAU, and local RACGP/Urology Society of Australia and New Zealand) confirm the longstanding efficacy and safety profile of tadalafil for ED, LUTS/BPH, and PAH. Recent studies (European Urology, 2023; Australian Prescriber, 2024) suggest no significant new safety risks but ongoing monitoring of cardiovascular outcomes is advised in older patients or those with comorbidities. The RACGP (2023) also stresses the importance of screening for cardiovascular risk and proper patient selection (see References below).
Availability and Delivery
| Popular Pack Sizes | Indicative Price Range (2024, AU$) | Delivery Time (Sydney, Melbourne, Brisbane, Perth) |
|---|---|---|
| 4 x 20 mg | $65–80 | 1–3 business days |
| 28 x 5 mg (monthly supply) | $95–130 | 1–3 business days |
| 56 x 5 mg | $160–220 | 2–5 business days |
| Cialis Black 80 mg (online import) | $120–180 (not TGA-approved) | 7–14 business days (international) |
Note: Always buy from registered Australia pharmacies, not from unverified overseas websites.
FAQ: Common Patient Questions
- Is Cialis Black 80 mg safe to use?
80 mg tablets are well above standard approved doses in Australia (max 20 mg once daily for ED). Higher doses carry greater risk of side effects. Always consult your GP before considering this formulation; do not use without medical supervision. - Can I drink alcohol while taking Cialis?
Moderate drinking is safe, but large amounts of alcohol can lower blood pressure, increase dizziness, and reduce sexual performance. Stay within the NHMRC guidelines (<5 units is generally safe). - Do I need to plan sexual activity around taking Cialis?
With “as needed” dosing, take 30–60 minutes before sex; with daily dosing, spontaneity is enhanced—no need to time intimacy. - Is generic tadalafil as effective as brand-name Cialis?
Yes—TGA-approved generics contain the same active ingredient and are equally effective/safe. - Can women use Cialis?
Tadalafil is not approved for use in women in Australia.
References
- Therapeutic Goods Administration (TGA): Public Summary, Tadalafil
- Australian Prescriber, 2024;47:112-115
- European Urology, 2023; DOI: 10.1016/j.eururo.2023.01.045
- RACGP Guidelines on Men’s Health, 2023
- Product Information: Cialis (Tadalafil) Tablets, Eli Lilly
