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Cialis

Erectile Dysfunction|Active ingredient(s): Tadalafil|Manufacturer: Lilly

Middle-aged man holding a glass of water and a pill.

The most long-lasting ED treatment for maximum spontaneity

  • The “Weekend Pill” – sustained effects for up to 36 hours
  • Helps to maintain and prolong erections.
  • Take one tablet at least 30 minutes before sex.

How to take

Happy couple peering from under white blankets.

Fast-acting

Take one Cialis tablet at least 30 minutes before you plan to have sex.

Close-up of a man holding up a blue pill.

Maximise the effects

Take Cialis on an empty stomach to get the most out of the medicine.

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Long-lasting

You can enjoy the effects of Cialis for up to 36 hours.

What others say about Cialis

Trustpilot review
576 reviews with score 4.7

Quality healthcare
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Price is all-inclusive.
Consultation is included.
Prescription is included.

Free shipping.
UK: Free next-day delivery.
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Certified online pharmacy.

Cialis

What is Cialis?

Cialis is a prescription treatment for erectile dysfunction (impotence). It contains Tadalafil and was released in Europe in November 2002.

It works in as little as 30 minutes, and the effects last for up to 36 hours, which is much longer than other ED medicines.

It is available in two doses: 10 and 20 mg.

Is Cialis better than Viagra?

Viagra and Cialis tablets belong to the same group of medicines, so they are equally effective. However, Viagra does not last for as long as Cialis. The effects of Viagra last up to 4-6 hours, whilst Cialis lasts for up to 36 hours.

How does Cialis work?

Cialis contains Tadalafil, a type of medicine called a PDE-5 inhibitor (phosphodiesterase type 5). This is a group of medicines that specifically treat erectile dysfunction.

They work by blocking the chemical reaction which prevents blood flow and stops the penis from getting hard. Blocking this reaction helps to promote sustained and prolonged erections.

How effective is it?

Clinical studies show that the Cialis pill is a highly effective treatment for erectile dysfunction.

One study included 160 men. 80 participants took 5 mg of Tadalafil, and the other 80 received a placebo (an inactive substance) for 3 months. After treatment, men had to fill out a questionnaire about their ED.

The men’s erectile function quality was measured using the International Index of Erectile Function (IIEF), a questionnaire that men fill in about their erectile function quality. A higher score (22-25) is classed as no ED.

Before treatment, the men scored 13 (classed as moderate ED). After treatment, men who took Cialis scored 18 on average (mild ED). Those who took the placebo experienced no significant improvement, scoring 15 after treatment.

How long does it take Cialis to work?

Cialis should work in approximately 30 minutes. Therefore, you should allow 30 minutes for the medicine to work before sexual activity.

How long does Cialis last?

The effects of Cialis tablets last up to 36 hours. So Cialis will be effective for sexual activity for up to 36 hours after taking it.

Who can use Cialis?

Most men aged 18 and over can use Cialis. However, if you have a certain medical condition or take certain medications, you should check with your doctor to see if it's safe for you to use.

You cannot use Cialis if:

  • you have low blood pressure (below 90 mmHg)
  • you have had a heart attack
  • you have heart failure
  • your doctor has advised you not to have sexual activity
  • you have a history of non-arteritic ischaemic optic neuropathy (NAION, a condition that causes sudden vision loss due to a lack of blood flow to the optic nerve)
  • you have recently had a stroke
  • you have unstable angina (a condition which causes chest pain)
  • you have an arrhythmia (an irregular heartbeat)

Consult your doctor if you are unsure whether any of these conditions apply to you.

Can women take Cialis?

No, women cannot take Cialis. Some women think Cialis may improve their sex drive. Cialis is not licensed for women, and it could be harmful.

What dose should I take?

You should start with the starting dose of 10 mg, unless your doctor advises you otherwise.

You can increase the dose to 20 mg if you find the effects of 10 mg are not enough.

How do I take Cialis?

Take one tablet 30 minutes before sexual activity. Swallow one tablet with a glass of water.

Do not take more than one tablet per day. It will not increase the effectiveness of Cialis and could increase your risk of side effects.

Can I take Cialis 10 mg daily?

The Cialis 10 mg dosage is not recommended for continuous daily use. If you are looking for daily treatment, Cialis is available as Cialis Daily, which contains doses of 2.5 or 5 mg.

Are there any side effects?

Like all prescription medicines, the Cialis pill may cause side effects. The most common side effects should go away on their own once your body gets used to the medicine.

Common side effects (up to 1 in 10 people):

  • dizziness
  • facial flushing
  • stomach discomfort
  • headache
  • blocked nose (nasal congestion)
  • muscle pain

Speak to your doctor as soon as possible if you experience any persistent or serious side effects. If you experience any rare side effects such as swelling of the face or mouth or difficulty breathing, please seek emergency medical attention.

For a full list of side effects, please refer to the patient information leaflet (PIL) which comes in the box with your medicine.

Is Cialis safe?

Yes, Cialis is a safe and clinically-proven treatment for ED. But if you have another medical condition or take other medication, your doctor will need to ensure it’s safe for you. Our doctors will also know whether it’s safe for you based on your medical questionnaire during the ordering process.

Can I get Cialis without a prescription?

No, Cialis is not available without a prescription. You need a valid prescription from a healthcare professional to purchase it. This ensures the medication is safe and suitable for your needs.

Medical review byDr. Caroline FontanaLast review 10 November 2025
Dr. Caroline Fontana

Note: You must complete a short online consultation so that our doctor can ensure that the treatment is suitable for you. The above pricing should only be used as a reference. The final decision to issue this treatment lies with the prescribing doctor.

Cialis Overview

Type of medicine: PDE-5 Inhibitor
Used for: Erectile dysfunction
Active ingredient: Tadalafil
Works by: Increasing blood flow to the penis
Effective within: 30 minutes
Available as: Tablets
Available dosages: 10 and 20 mg
Usage instructions: Take one tablet 30 minutes before sexual activity
Packaging: Cardboard carton containing foil blister packs of tablets
Manufacturer Eli Lilly
Generic available Yes, Tadalafil

FAQs

What is included in the online consultation?
Will a doctor review my consultation?
What happens after I submit my order?
What services are included with my order?
Is the price all-inclusive?
What are my delivery options?
Is it safe to buy prescription medication online?
Is this service discreet?
What is included in the online consultation?

Our online consultations are in the format of short medical questionnaires. You will be asked general questions about your health and medical history, as well as specific medical questions relevant to the treatment you have chosen. We will also ask you for your payment and delivery details to complete the order.

Online consultations take no longer than 5 minutes to complete. All questions are necessary when issuing prescription medicines. It means that our doctors can make sure the treatment is safe and right for you.

Will a doctor review my consultation?

Yes, it is a legal requirement that all online consultations are reviewed by a registered doctor. This is to make sure the chosen treatment is safe and right for you to take. All personal information is stored securely and confidentially.

Please note, all orders are subject to doctor approval, and we cannot guarantee that your order will be approved.

What happens after I submit my order?

Your online consultation will be sent directly to our medical team, where it will be reviewed by on of our in-house doctors.

If a doctor approves you for treatment, they will issue a prescription. Your prescription will then be forwarded to our pharmacist, where you medication will be dispensed and dispatched for delivery.

What services are included with my order?

Every order includes:

  • Free consultation - your consultation will be personally reviewed by one of our registered doctors.
  • Free prescription - a doctor will issue you a prescription if approved for treatment.
  • Free delivery - we provide free express delivery across Europe, you should receive your order in 1-2 working days.
Is the price all-inclusive?

Yes, our service is all-inclusive and there are no hidden fees. All 121doc orders include a free online consultation, a free prescription and free express delivery.

What are my delivery options?

We offer several delivery options at no extra charge:

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All these options can be tracked and require a signature on delivery. If you are not in, a friend or relative can sign in your place.

Is it safe to buy prescription medication online?

It is safe to buy prescription medications online from genuine and reputable healthcare providers, like 121doc.

Our medical staff and facilities are registered with the relevant medical governing bodies. We also ensure your data is protected by adhering to European data privacy laws.

You can learn more about our certifications here.

Is this service discreet?

Our patients’ privacy is of utmost importance. All your medical information is securely stored and only viewed by our doctors. We do not share your details with third-parties. We are also closely adhere to data privacy laws.

All orders will only show on invoices, bank statements, etc. as ‘HHC Ltd’.

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As soon as you place the order, one of our doctors will review your consultation. On working days, this usually takes around one hour.

Questions:

If the doctor has any additional questions, you will receive a phone call and an email. We understand you might be at work or busy. Our customer service representatives are always discreet and can call back at a more convenient time if necessary.

Our emails never contain any personal or medical information, only a link to your private account on our website (where you will find your messages).

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Once our pharmacy receives your prescription, you will get a second email with your package tracking code.

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All orders include next-day delivery. Alternatively, you can select a delivery date that suits you better.

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We also provide a free UPS Access Point service. Pick up your package from one of many collection points across the UK.

With your tracking code, you will know the estimated delivery time. All we need is your signature (or a friend‘s or relative’s).

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All parcels are plainly labelled; there is no logo or any indication of its contents. Inside, you will find your treatment as well as a patient leaflet in your chosen language.

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With 121doc’s Subscribe & Save service, you can automatically receive your treatment every few weeks or months.

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