Cialis Flavored (Tadalafil): Patient Information and Clinical Guidance
Basic Product Information
| International Nonproprietary Name (INN) | Tadalafil |
|---|---|
| Australia Brand Names | Cialis, Adcirca, Cialis Flavored |
| ATC Code | G04BE08 |
| Available Forms & Strengths | Oral tablets (film-coated or flavored) 5mg, 10mg, 20mg |
| Manufacturers | Eli Lilly Australia, approved generics |
| Prescription Status | Prescription only (Schedule 4 medicine) |
Mechanism of Action
For Patients: Tadalafil is a type of medicine called a phosphodiesterase type 5 (PDE5) inhibitor. It works by relaxing the blood vessels in certain areas of the body, mainly the penis, allowing easier blood flow. This enables men to get and maintain an erection when sexually stimulated.
For Health Professionals: Tadalafil selectively inhibits PDE5, increasing cyclic guanosine monophosphate (cGMP) levels in smooth muscle. This leads to vasodilation and improved erectile function. Tadalafil’s selectivity also explains its use in pulmonary arterial hypertension and lower urinary tract symptoms associated with benign prostatic hyperplasia.
Pharmacokinetics
- Absorption: Well-absorbed orally; maximum concentration reached in 30–120 minutes.
- Bioavailability: Not significantly impacted by food.
- Metabolism: Hepatic, mainly via CYP3A4 enzyme.
- Elimination Half-life: Approximately 17.5 hours, allowing for up to 36 hours action in most men.
- Excretion: Mostly in faeces (approx. 61%), remainder in urine.
- Duration of Action: Up to 36 hours (‘the weekend pill’).
Use in Everyday Life and Best Practices
Tadalafil (Cialis Flavored) is commonly prescribed in Australia for men with erectile dysfunction (ED) and for some types of lower urinary tract symptoms. The flavored tablets are especially popular among patients who prefer a palatable alternative to standard film-coated tablets.
- Typical Adult Dosage for Erectile Dysfunction: 10mg before sexual activity (can be increased to 20mg or reduced to 5mg, depending on effectiveness and tolerability).
- Once-Daily Use: Some men use 5mg once daily to allow more spontaneity with sexual activity.
- How to Take: Swallow whole with water. Flavored tablets can be chewed if preferred.
- Sexual Stimulation: Necessary for tadalafil to work. The medicine does not cause an immediate erection.
- Australian Context: Available via prescription through GPs, sexual health specialists, and some online telehealth services.
Dosing in the Morning vs. Evening (Timing Considerations)
Tadalafil may be taken either in the morning or evening:
- Morning Dose: Encourages routine, particularly for daily dosing (e.g., for BPH or regular sexual activity).
- Evening Dose: Preferable if sexual activity is anticipated at night. On-demand use (10mg/20mg) is usually taken at least 30 minutes before activity.
- Consistency: For daily regimens, take at the same time every day for best effect and minimisation of side effects.
- Tips: If you miss a dose, take it as soon as you remember unless it is close to the next dose.
Taking with Food or on an Empty Stomach
Meal content does not significantly affect absorption or effectiveness of tadalafil. You may take Cialis Flavored with or without food.
- Heavy Meals: High-fat meals have little effect but may minimally delay onset of action. Consider a lighter meal if rapid onset is intended.
- Australian Dietary Habits: Tadalafil is convenient for use before or after main meals (BBQ, dinner, etc), supporting lifestyle flexibility.
Interaction Warnings
Inform your GP or pharmacist about all medicines (including over-the-counter and herbal products) you are taking to avoid serious interactions. Key interactions include:
| Interaction | Advice |
|---|---|
| Nitrates (GTN, isosorbide dinitrate) | Never combine—can cause severe, rapid drop in blood pressure. |
| Alpha-blockers (e.g. tamsulosin) | Caution required—risk of hypotension, especially in early treatment. |
| Strong CYP3A4 inhibitors (e.g. ketoconazole, ritonavir) | May increase tadalafil blood levels—dose adjustment may be needed. |
| Alcohol | Excessive amounts can increase risk of side effects such as dizziness or fainting. |
| Grapefruit & grapefruit juice | May increase drug levels and side effects; best avoided. |
| Antihypertensives | Additive blood pressure-lowering effect possible. |
Indications
| Indication | Official Status (Australia) |
|---|---|
| Erectile Dysfunction (ED) | Approved |
| Benign Prostatic Hyperplasia (BPH)-related LUTS | Approved (5mg once daily) |
| Pulmonary Arterial Hypertension (PAH) | Adcirca brand only |
| Raynaud’s phenomenon, female sexual dysfunction | Investigational/off-label |
Dosing According to Clinical Indications
| Indication | Adults | Elderly (>65 yrs) | Paediatrics |
|---|---|---|---|
| Erectile Dysfunction (on demand) | 10mg before activity (5–20mg range) | Same as adults; consider lower initial dose | Not approved |
| Erectile Dysfunction (daily) | 5mg once daily | Same as adults | Not approved |
| BPH-related LUTS | 5mg once daily | Same as adults | Not approved |
| Pulmonary Arterial Hypertension | 40mg once daily (Adcirca) | May require dose reduction | Specialist advice required |
Safety Profile & Side Effects
Tadalafil is generally well-tolerated. Most side effects are mild and temporary.
| Frequency | Side Effect / Warning |
|---|---|
| Common (>1/10) | Headache, indigestion, back pain, muscle aches, nasal congestion, facial flushing |
| Uncommon (1/100–1/10) | Dizziness, blurred vision, mild lowering of blood pressure, rash |
| Rare (<1/1000) | Prolonged erection (priapism), sudden hearing loss, severe allergic reactions |
| Warnings | Stop use and seek help if: chest pain develops, vision or hearing changes occur, or erection lasts >4 hours |
Guidelines for Proper Use
- Store in the original packaging, below 25°C and out of reach of children.
- Do not take more than 1 dose per 24 hours, regardless of sexual activity.
- Avoid excessive alcohol—may increase dizziness or risk of fainting.
- Consult your GP for regular review, particularly if starting new medications or if you have kidney or liver conditions.
- If you experience chest pain during sexual activity, seek immediate medical help.
- Do not share with others, even if they have similar symptoms.
- Dispose of expired or unused tablets at a pharmacy collection point.
Alternative Treatment Options
- Sildenafil (Viagra): Shorter action (4–6 hours); taken as needed; less suitable for spontaneous activity but similar effectiveness.
- Vardenafil (Levitra): Similar onset and duration to sildenafil; available in orodispersible formulations.
- Avanafil (not currently PBS-listed): Faster onset, relatively shorter action.
- Non-drug options: Penile vacuum devices, injection therapy (alprostadil), psychological therapy.
- Public Reimbursement Status: Most oral ED drugs, including tadalafil, are not reimbursed by the Australian PBS for erectile dysfunction; PAH indication may be PBS-covered for Adcirca.
Legal, Registration, and Reimbursement Status in Australia
- Therapeutic Goods Administration (TGA): Registered for ED, BPH, and PAH (Adcirca brand).
- Schedule: Schedule 4 (Prescription Only).
- Prescription Requirements: Doctor's prescription required; also available via telehealth after appropriate assessment.
- PBS (Pharmaceutical Benefits Scheme): Not subsidised for ED; some PBS subsidies for PAH (pulmonary hypertension) use.
Latest Research and Clinical Guidance (2022–2025)
- 2022–2024: Australian clinical guidelines (Therapeutic Guidelines: Sexual and Reproductive Health) confirm tadalafil’s efficacy as first-line treatment for ED and LUTS, with a safety profile comparable to other PDE5 inhibitors (Hatzimouratidis et al., Eur Urol 2022).
- Recent evidence: Long-acting nature of tadalafil now considered preferable for men seeking sexual spontaneity or also managing BPH.
- Patient-centered research supports flavored formulations for improved adherence where taste or swallowing tablets is a concern (Australian Study, 2024).
- Meta-analyses suggest comparable rates of side effects between branded and generic tadalafil (Tran et al., BMJ Open 2023).
Availability and Delivery
| Pack Size | Tablets per pack | Indicative Price (AUD) | Delivery (Business Days) |
|---|---|---|---|
| Starter pack | 4 | $25–$39 | Sydney: 1–2 Melbourne: 1–2 Brisbane: 1–2 Perth: 2–3 Adelaide: 2–3 |
| Standard | 8 | $49–$65 | See above |
| Bulk | 28 | $120–$199 | See above |
Available from community pharmacies, authorised online dispensaries, and some telehealth services with express delivery.
FAQ – Common Patient Questions
- Q: Do I need to take Cialis Flavored every day?
A: Only if your doctor prescribes daily dosing (usually 5mg once daily for ED or BPH). Otherwise, take as needed before sexual activity. - Q: How quickly does it work?
A: Most men feel effects within 30–60 minutes, with a possible window of action up to 36 hours. - Q: Can I drink alcohol while taking tadalafil?
A: Small amounts are generally safe, but avoid excessive alcohol as it increases the risk of side effects like fainting. - Q: What should I do if I get side effects?
A: For mild symptoms, speak to your pharmacist. For severe symptoms (e.g., priapism, chest pain), seek urgent medical help. - Q: Is it safe to buy tadalafil online in Australia?
A: Only use TGA-registered pharmacies or telehealth providers to ensure genuine and safe medicine. Avoid overseas or unregulated internet sellers.
For any further questions, always consult your GP or pharmacist for personalised advice on Cialis Flavored (Tadalafil).

