(Generic version of Cialis)

Good loving is a marathon, not a sprint – and tadalafil is scientifically developed to give you the stamina to go the extra mile.

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How much does tadalafil cost?

Pack size 10MG 20MG
6 tablets $3.55 $4.25
8 tablets $3.45 (SAVE 3%) $4.10 (SAVE 4%)
10 tablets $3.15 (SAVE 11%) $3.80 (SAVE 11%)
12 tablets $3.05 (SAVE 14%) $3.70 (SAVE 13%)


What is tadalafil?

Tadalafil, also known by the brand name of “Cialis”, is a medicine scientifically formulated to treat erectile dysfunction, improving your ability to get and maintain an erection. It uses the same active ingredient as Cialis so it is just as effective as the branded version and it is FDA approved to treat ED.

Its an effective solution for a very common problem in men from all ages. So don’t worry if it happens to you in your twenties or your fifties. We got you covered.

How does tadalafil work?

Tadalafil widens the blood vessels that supply the penis, allowing more blood flow to the area to help you maintain a firmer erection during sexual intercourse. It’s what’s known as a PDE5 inhibitor, which helps to increase blood flow to the penis when you are aroused. Tadalafil will help you get an erection, but it will not increase your desire for sex and you must be sexually aroused for it to work. Tadalafil won’t treat any underlying physical causes of your ED.



Tadalafil should be taken at least half an hour before sex. The tablet should be swallowed whole with some water. Tadalafil should not be taken with a meal as this can delay absorption. Small amounts of alcohol shouldn’t stop or delay tadalafil from working, but drinking large amounts of alcohol can make it more difficult to get an erection and could increase the risks of side effects. Do not take tadalafil with grapefruit or grapefruit juice as this may affect how the medicine works. Tadalafil can last up to 36 hours, do not take more than one tablet in this time. Don’t combine tadalafil with other ED meds.



Tadalafil may remain effective for up to 36 hours after taking it. But it only works if you are sexually aroused, so it will need your help. Some foreplay prior to sexual activity will do the trick. The erection will go away as normal after sex.

What is generic Cialis?

Tadalafil is sometimes called ‘generic Cialis’. Tadalafil is the active ingredient that is used in Cialis, which is the brand name given to the drug buy it’s original manufacturers Lilly. After Lilly’s patent expired in 2017, other drug manufacturers were able to sell tadalafil as a treatment for ED. Tadalafil and Cialis are medically the same and will have the same effects.

When should I take tadalafil?

Tadalafil should be taken about half an hour (30 minutes) before sex. The effects can last for up to 36 hours.

Why is tadalafil called 'the weekend pill'?

Tadalafil can last up to 36 hours, which is why it is sometimes called ‘the weekend pill’. This means that you could get an erection, or more than one erection, within this time frame. The longer duration of action has led to tadalafil’s increasing popularity.

Does tadalafil really last for 36 hours?

Yes, the effects of tadalafil can last for up to 36 hours. This doesn’t mean that you will have an erection for 36 hours, although you may be able to get more than one erection in this time. You must be sexually aroused for tadalafil to work, so you’ll only get an erection when you want to.

How effective is tadalafil?

Tadalafil is an effective treatment for erectile dysfunction. In studies, 81% of men said their erections were improved after taking the drug. If tadalafil doesn’t work for you it could be because of external factors such as anxiety or not being sexually aroused enough, or your dose could be too low. We recommend trying the same dose of tadalafil a few times before changing your dose or trying an alternative ED treatment. Speak to our doctors if you feel tadalafil isn’t working for you.

How much tadalafil should I take?

The usual starting dose for tadalafil is 10mg, however, it comes in 2.5mg, 5mg, 10mg or 20mg tablets. The lower dosages of 2.5mg and 5mg are prescribed to be taken daily to provide continuous treatment. Our doctors will determine the most suitable dosage for you.

Can I take tadalafil daily?

Yes, the lower doses of tadalafil (2.5mg or 5mg) can be taken daily. This maintains the levels of the medication in your blood so you should be able to get an erection when you want to engage in sexual activity. This can be useful for men who want to have sex twice a week or more and don’t want to remember to take the tablet each time they wish to have sex.

What should I expect when taking tadalafil for the first time?

You must be sexually aroused for tadalafil to work. The effects of tadalafil can last up to 36 hours, so you should be able to get and maintain an erection more than once in that time frame if you are sexually aroused. You might find that tadalafil doesn’t work the first time you try it, especially if it has been a long time since you last had sex. We recommend trying tadalafil a few times before changing the dose or seeking an alternative. If you feel like your dose is wrong, contact our doctors who may recommend a different dose for you. Tadalafil is usually a well-tolerated treatment for ED, however, like all medications some side effects can be felt including headaches, facial flushing, dizziness, digestive issues and changes to vision. These side effects are usually mild and will fade after a short amount of time.

Does tadalafil have side effects?

Side effects are uncommon but can include headaches, nausea, a sudden feeling of heat in your upper body, indigestion, visual disturbances, dizziness or a stuffy nose. These side effects are usually mild and should go away after a few hours. For more information on side effects, please refer to the patient information leaflet that comes with your medication.

Can I use tadalafil with alcohol?

Drinking a small amount of alcohol, for example, a beer or a glass of wine shouldn’t impact the effectiveness of tadalafil. You should avoid drinking too much alcohol whilst using tadalafil as this may make it more difficult for the drug to work. Alcohol, like tadalafil, decreases your blood pressure and when used together, can also increase your risk of getting dizzy when you stand up.

Can I take more than one tadalafil tablet in a day?

Do not take more than one tablet a day.

Is it ok to drive after taking tadalafil?

Some men have reported dizziness when taking tadalafil, so it is best to avoid driving until you have used the medicine a few times and know how you respond.

What is the difference between tadalafil and Cialis?

Both medicines work in the same way and have the same active ingredient. The main difference between tadalafil and Cialis is the pricing. Cialis is the original branded product and tadalafil is the generic version which is made by different manufacturers at a cheaper price.

What is the difference between tadalafil and sildenafil?

Tadalafil and sildenafil are both PDE5 inhibitors and they work in a similar way to help you get and maintain an erection. The main difference between the two medications is the duration of action. Sildenafil can last for up to 5 hours, whereas tadalafil can last up to 36 hours.

Can I buy tadalafil over the counter?

No, tadalafil is a prescription-only medicine.

Can I buy tadalafil online?

You can buy tadalafil right here. Start our online consultation by entering your medical history and symptoms. Our licensed US doctors will review your answers and if approved for a prescription, you’ll receive a treatment plan within two hours. We’ll ship your tadalafil discreetly and for free to your door within two days.

Are there alternative treatments for ED?

Not all men need a tablet that works for up to 36 hours. The following ED treatments are available to buy online FROM MARS (subject to doctor approval):

Where can I find more information on tadalafil and erectile dysfunction?

Visit our erectile dysfunction page for more information on causes, treatments and lifestyle changes to help prevent ED. For further advice on ED and your sexual health, visit our blog.



Cialis is a brand name medication discovered and marketed by Eli Lilly, and Tadalafil is the active ingredient in Cialis that treats erectile dysfunction.

Which meds are right for me?

All treatments are medically proven to assist in getting and maintaining an erection – but each one of them are unique in their abilities and effectiveness.

Your consultation with our doctors can ensure you find the right ED meds for your needs.

Side Effects

Is tadalafil safe?

Side effects of tadalafil are usually mild to moderate and only last for a short amount of time. If you experience any side affects you should stop taking the medication. We recommend reading the link below to understand all of the potential benefits and risks of the medication.

Open medical information
Info Leaflets

Before taking Tadalafil or any medication, it is important to read the Patient Information Leaflet.

Open Patient Information Leaflet

Other available
treatments for ED



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  • Lasts up to 4 hours
From $2/tablet


(Generic version of Levitra)

  • Takes effect in 30 minutes
  • Lasts upwards of 5 hours
From $3.70/tablet



  • Takes effect in 1 hour
  • Lasts up to 4 hours
From $4.95/tablet

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