Cialis

Cialis is a prescription-only erectile dysfunction medication that contains the active ingredient tadalafil.

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4 pack of Cialis 10mg tadalafil film-coated tablets
Packet front of Cialis four 20mg film-coated tablets
The back of a packet containing four 10mg film-coated tablets of Cialis
A blister pack of two Cialis tablets
Two yellow Cialis 20mg film-coated tablets
Packaging picture

Prices from £45.99

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10 mg

4 tablet(s) - £45.99

8 tablet(s) - £81.99

12 tablet(s) - £117.99

16 tablet(s) - £152.99

20 mg

4 tablet(s) - £45.99

8 tablet(s) - £88.00

12 tablet(s) - £119.99

16 tablet(s) - £149.00


Frequently asked questions

What is the difference between Cialis and Viagra?

The main difference between Cialis and Viagra lies in the time frame during which they are effective:

  • Cialis works for a period of up to 36 hours. This means that if you are sexually stimulated within this period of time, Cialis will help you get an erection. It is often referred to as a “weekend pill”, as it allows you to have spontaneous sex several times during the specified window of time.
  • Viagra is effective for up to 4 hours and therefore requires that you plan ahead.

Both Viagra and Cialis take 30 to 60 minutes to work, so you should take the tablet at least half an hour before intercourse.

The dosage for each medication is also different, as the active ingredient is different. Viagra comes in 25mg, 50mg, and 100mg tablets, whilst Cialis comes in 10mg or 20mg tablets. You can also get Cialis Daily, which is a 2.5mg or 5mg tablet you take once a day.

Is Cialis better than Viagra?

Both Cialis and Viagra are just as effective as each other, and choosing between them depends on which is best for you or best matches your needs. There is no ‘better’ treatment as they both have different benefits depending on the person and their needs.

For example, if you need a longer-lasting treatment, Cialis may be the better treatment for you as it lasts for up to 36 hours. If you need a treatment that’s available over the counter, Viagra Connect might be better for you. What’s important is learning the differences and finding what’s best for you.

There is a large range of ED treatments available at ZAVA. You may find that one treatment works better than another for your ED symptoms.

Can you take Cialis on an empty stomach?

Yes, you can take Cialis with or without food, but what you eat and when you eat can affect how quickly it works. Eating a meal that’s high in fat right before taking your medication can make it take longer to start working.

A few uncommon side effects of Cialis are stomach ache, nausea (feeling sick), or vomiting (being sick). If you get any of these side effects, try eating a small meal before taking Cialis.

Is 20mg of Cialis equal to 100mg of Viagra?

While 20mg is the maximum dose of Cialis and 100mg is the maximum dose of Viagra, they are not directly equal or interchangeable as they are different medications with different active ingredients. Factors such as underlying health conditions and tolerance to the ingredients can affect how your body responds to these medications.

If you are taking the maximum dosage of one of these medications and would like to switch, you should always start with the recommended starting dosage (10mg for Cialis, 50mg for Viagra) to see how your body responds to the new medication, and then increase the dosage if necessary with guidance from your doctor.

Can you take Cialis and Viagra together?

No, you should not take Cialis and Viagra together as it can be unsafe. These medications both work in the same way, so taking both at the same time can increase the risk of side effects such as low blood pressure, dizziness, and priapism (painful long-lasting erections that don’t go away).

Can Cialis lower my blood pressure?

An uncommon side effect of Cialis is low blood pressure. As Cialis works to relax your blood vessels, this could slightly lower your blood pressure temporarily, but this is unlikely to cause any health issues. If you get side effects such as dizziness, blurred vision, heart palpitations, or confusion, this may be a sign of low blood pressure, and you should speak to your doctor straight away if you get these symptoms and stop taking Cialis.

You should not take Cialis if you have been diagnosed with low blood pressure already, as this could cause your blood pressure to drop dangerously low.

Can Cialis cause a heart attack?

A rare side effect of Cialis is a heart attack. Most men who have experienced a heart attack whilst taking Cialis had heart problems before taking the medication. Your doctor will make sure Cialis is a safe and suitable treatment before prescribing it to you.

Always follow your doctor's instructions when taking Cialis, and never take more than your prescribed dose. This could increase the risk of dangerous side effects, especially in men who have heart problems.

What makes Cialis work better?

Things that make Cialis work better include:

  • taking it at the right time (around 30 minutes before sex)
  • being sexually aroused, you may need to participate in foreplay first
  • avoiding alcohol, as this can make it harder to get and maintain an erection
  • avoiding heavy, greasy, and fatty meals before taking Cialis, as this can delay its effects
  • not putting too much pressure on yourself, as this can make it harder to maintain an erection

If Cialis isn’t working for you after trying it 8 different times, speak to your doctor. You may need a higher dose, or they may suggest trying another ED medication.

While it is beneficial to use medication to treat erectile dysfunction, it is also helpful to find out the cause of your ED. Sometimes ED can occur due to side effects of other medications, such as antidepressants, or due to emotional stress. Psychotherapy can help you to understand if you have any emotional barriers that may be stopping you from getting an erection.

Your doctor will be able to help you find out if any underlying health conditions may be causing your erectile dysfunction.

How often can you take Cialis?

You should not take Cialis more than once a day (24 hours). Cialis can last for up to 36 hours, so you may be able to have sex again the next day without needing another tablet.

Does Cialis work the first time you take it?

Cialis can work the first time you take it, but this isn’t always the case for everyone who tries it. This is because it can take some time for your body to get used to the medication. Due to this, it is recommended to take Cialis on 8 different occasions before trying a different dose or an alternative treatment if it is not working well for you.

What if Cialis doesn’t work for me?

If Cialis doesn’t work for you, try again the next day or the next time you plan to have sex. If you have tried Cialis on more than 8 different occasions and it’s still not working for you, speak to your doctor. They may want to change your dose or recommend a different treatment.

Does Cialis keep you awake?

No, there are no side effects of Cialis that should stop you from sleeping or cause drowsiness.

Can Cialis cause depression?

No evidence shows that Cialis causes depression or low mood. If you think you have depression or a low mood, you should speak to your doctor.

Is Cialis the same as tadalafil?

Yes, Cialis is the branded version of tadalafil, which is the active ingredient in both medications. Both of these medications work in exactly the same way, therefore, Cialis has the same side effects as tadalafil. The only differences between them are the packaging, cost and how the pills look.

Why is Cialis called the ‘weekend pill’?

Cialis is called the weekend pill because its effects can last for most of the weekend (up to 36 hours). This means if you take Cialis on Saturday afternoon, it should last the rest of the weekend.

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Medically reviewed by:
Dr Brenda Ikeji Medical Editor

Brenda studied medicine at St Georges University of London and has most recently worked in John Radcliffe Oxford University Hospitals, covering acute and general medicine.

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Last reviewed: 14 Aug 2024