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Erectile dysfunction
Tadalafil (generic Cialis)
Tadalafil is the active ingredient in Cialis and a popular treatment for erectile dysfunction. It requires an online consultation with a healthcare provider who determines whether treatment is suitable.
- Genuine medicines
- Works within 30–60 minutes
- Prescribed by registered doctors
Available doses
NZ$37
Price with Subscribe & Save
Tadalafil is only available on prescription. Your doctor will determine after the online review whether you need a daily dose or a dose taken as needed.
About tadalafil
What is tadalafil and how does it work?
Tadalafil is the generic version of Cialis and belongs to the PDE5 inhibitor group. It relaxes the blood vessels supplying the penis, improving blood flow so you can get and keep an erection when sexually aroused.
Daily or as needed
Tadalafil can be used in two ways: a low daily dose (2.5mg or 5mg) at a set time, or a higher dose (10mg or 20mg) around 30 minutes before sex.
Longer duration
Tadalafil can remain effective for up to 36 hours, allowing more room for spontaneity than shorter-acting medicines.
What can you expect?
Studies show tadalafil can double the chance of successful intercourse in men with erectile dysfunction. If the first dose doesn't work as expected, your doctor can adjust it.
In short
Tadalafil summary
| Detail | Information |
|---|---|
| Active ingredient | Tadalafil |
| Brand name | Cialis |
| Form | Tablet, daily or as needed |
| Strengths | 2.5mg, 5mg, 10mg, 20mg |
| Onset | 30–60 minutes |
| Duration | Up to 36 hours |
| Review | Online medical questionnaire, reviewed by an NZ-registered doctor |
| Delivery | Discreet, plain packaging |
Strength and quantity
Available strengths and pack sizes
The daily dose is lower because the medicine builds up in your body. Higher strengths are used for as-needed dosing.
| Strength | Use | Quantities |
|---|---|---|
| 2.5mg | Daily dose | 28, 56, 84 tablets |
| 5mg | Daily dose | 28, 56, 84 tablets |
| 10mg | As needed | 4, 8, 12, 16, 32, 64 tablets |
| 20mg | As needed | 4, 8, 12, 16, 32, 64 tablets |
A daily dose may suit you best if you have sex several times a week or want more spontaneity.
Get tadalafil
The first steps toward feeling healthier.
Complete a simple questionnaire
Answer questions about your health, lifestyle and goals.
Your request is reviewed by a doctor
An NZ-registered doctor carefully reviews your request to check the treatment is safe and suitable for you.
Receive discreet delivery
Your medication is prepared by our registered pharmacy and discreetly packaged for delivery to your door.
Stay supported
Schedule check-ins with our specialist team to track your progress and support you throughout your journey.
Eligibility
Tadalafil isn't suitable for everyone. Our doctors review your questionnaire before a prescription is issued.
Who is tadalafil suitable for?
- Adult men aged 18 or over
- Difficulty getting or keeping an erection
- Wanting a longer duration or a daily dose
- Not taking nitrates or nicorandil
When is tadalafil not suitable?
- Taking nitrate medication or nicorandil
- Recent heart attack, stroke or serious heart conditions
- Severe liver or kidney problems
- Very low or untreated high blood pressure
- Known hypersensitivity to tadalafil
Important safety information
Side effects, interactions and ordering online safely.
Side effects of tadalafil
Common side effects include headache, indigestion, back pain, muscle pain, flushing and a blocked nose. Check the package insert for the full list.
Interactions with other medicines
Tadalafil can be harmful when combined with nicorandil or nitrate medication and may interact with alpha-blockers, among others. Always tell your doctor about all your medicines.
How safe is ordering online?
You can safely buy tadalafil from a regulated online pharmacy like Miva. Our registered doctors assess suitability and prescribe according to clinical guidelines.
When to seek help
Seek immediate medical help for an erection lasting more than 4 hours, sudden loss of vision or hearing, or chest pain during sex.
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Reviewers overwhelmingly report a great experience. Customers praise the efficiency and professionalism of the service, the simple ordering process, fast and reliable delivery, and a support team that is helpful, responsive and genuinely engaged.
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Their service is exceptional, very thorough and efficient.
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They're so helpful and efficient and respond quickly. I'll definitely use this service again.
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Very trustworthy company
I was reviewed by a doctor before any decision was made. That gives me confidence it's a trustworthy company. It arrived in an insulated box with a cool pack, and my order went smoothly.
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I've lost a significant amount of weight and I'm no longer hungry, so I don't overeat. The guidance along the way has really kept me on track.
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Fast, efficient and knowledgeable
Miva has guided me through my weight-loss journey. The service is fast, but there's always knowledgeable support in the background.
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Fast and simple
I filled out a thorough questionnaire, uploaded photos and the prescription was sent within the hour. The usage instructions were very detailed.
Our team of specialists
Our clinical team of doctors, pharmacists, dietitians and health coaches supports you at every stage. Join over 1 million patients who trust Miva with their health.
Dr. Lydia Sham Rashid
Head Physician
MD
Dr. Shehna Raghoonanan
Doctor
MB ChB
Abdal Alvi
Chief Clinical Officer
MPharm, IP, MRPharmS
Laura Perez
Head of Clinical Nutrition
BSc (Hons), MSc, MSc
Aamina Rafiq
Responsible Pharmacist
MPharm
Ayisha Mushtaq
Registered Nutritionist
MSc Human Nutrition
Zahra Qureshi
Clinical Pharmacist
MPharm, IP
Richard Wood
Clinical Pharmacist
MPharm, IP
Rebekkah Shaw
Head of Patient Care
BSc (Hons)
Jane Miller
Registered Dietitian
MSc, RD
Frequently asked questions about tadalafil
Weight loss treatments
Sildenafil
The generic version of Viagra, effective for about 4 hours.
From NZ$28
per treatment
Vardenafil
An alternative if sildenafil or tadalafil doesn't work well for you.
From NZ$46
per treatment
Finasteride
A daily tablet for hereditary hair loss in men.
From NZ$37
per month
Medically reviewed by
Aamina Rafiq
Responsible Pharmacist
This page has been reviewed by our clinical team to ensure the information is clear, accurate and up to date. Last updated: 10 February 2026.
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