Cialis 20mg

Brand Choice
Product from Canada

Cialis 20mg

Manufactured by: Lilly

From $16.71 USD per Tablet(s) (click)

MAY BE SPLIT May be split and taken at half the dose listed


Generic Equivalent
Product from Canada

Tadalafil 20mg

Manufactured by: Health Canada approved generic manufacturers ONLY

From $4.99 USD per Tablet(s) (click)

MAY BE SPLIT May be split and taken at half the dose listed


What is a Generic in Canada? Health Canada (the Canadian regulatory board) evaluates every Canadian generic for their safety, effectiveness, and quality. Every generic used in Canada has the same medical ingredients as their brand name counterpart and is considered bioequivalent to the brand name medication. The quality standards for brand name drugs and generic drugs are the same. All of the ingredients, facilities, and manufacturing processes must meet Canadian federal guidelines for Good Manufacturing Practices. In addition, Canadian generic manufacturers must perform 'comparative bioavailability' studies to demonstrate that their generic products deliver the same amount of medicinal ingredient at the same rate as the brand name medication. Nearly 45% of all prescriptions filled in Canada use generic medication and some hospitals exclusively use generic drugs. For more information, please visit

Cialis 20 mg

Strengths available

Brand name

Cialis (pronounced as See-al-liss)

Generic name

Tadalafil (pronounced as Ta-da-la-fill)

Manufacturer Information

Eli Lilly


About Cialis 20 mg

What is Cialis?

Cialis (tadalafil) is a cGMP-Specific Phosphodiesterase (PDE5) Type 5 Inhibitor used in the treatment of erectile dysfunction (ED) and benign prostatic hyperplasia (BPH).
ED is characterized by a man's inability to achieve an erection or maintain a sufficient hard and erect penis for a gratifying sexual experience. BPH symptoms include a frequent need to urinate, painful urination or a feeling that the bladder has not fully emptied after urination.

How does Cialis work?

Cialis works by allowing the blood vessels in your penis to relax following sexual stimulation, enhancing blood flow into the penile tissues. This results in improved erections for satisfactory penetration and sexual performance.

It is essential to understand that Cialis only works in response to sexual stimulation, which is just as well. The mechanism behind the improved blood flow to the penis is hinted at in the name of the drug class of Cialis, 'PDE 5 inhibitor'. The PDE5 is an enzyme involved in the degradation of cGMP in the corpus cavernosum.

When sexual stimulation occurs nitric oxide (NO) is released in the corpus cavernosum which activates the enzyme guanylyl cyclase which in turns produces and increased level of cGMP. cGMP is responsible for smooth muscle relaxation and blood flow in the penis, creating a stiff erection. When the PDE5 enzyme is inhibited by tadalafil, the active ingredient in Cialis, it decreases the rate at which cGMP is broken down and thus improving and prolonging an erection.

Cialis will not have an effect unless there is a physical arousal upon sexual stimulation.

How do I take Cialis?

Swallow your Cialis tablets whole with water. Cialis can be taken with or without food. T

he dosage of Cialis is dependent on a number of factors but is mainly decided upon by examining the patient (age, weight, other medications being taken, their preference) and the condition being treated (ED or BPH).

There are two different dosage regimens to ED treatment. Firstly, you can use an on-demand dose usually 10 mg to 20 mg, taken as a single tablet at least 30 minutes before intended sexual activity. Alternatively you can take a lower daily dose of between 2.5 mg to 5 mg. It may take up to 5 days for Cialis to reach a sufficient level in your body for sufficient and optimal therapeutic effect. There are pros and cons of taking Cialis daily vs taking Cialis on-demand. Taking Cialis daily means that you can have an increase in spontaneity with your sex life, as no planning is necessary, considering you will have consistent therapeutic levels in your blood plasma. You may also find you tolerate the lower daily dose better, with fewer side-effects than a larger on-demand dose. Some patients may prefer the on demand, single dosing of Cialis, as they may find it delivers better therapeutic results. The idea of only using the drug when needed also appeals to many patients, with a decrease length of time of any tolerable adverse effect. For the on-demand dosing the dose should never exceed 20 mg single dose, maximum ONCE per day. For the daily dose, try to take your dose at or around the same time each day.

If you miss a dose of your daily dose of Cialis, take it as soon as you remember. If it is almost time to take your next dose, skip your previous dose. Do not double up on a dose to make up for a missed dosed.

Cialis Alternatives: How Cialis compares to Viagra, Levitra and Stendra

Viagra, Cialis, Levitra, Staxyn and Stendra all fall under the drug class of PDE5 inhibitors which is indicative of their mechanism of action as these drugs work by inhibiting an enzyme called PDE5. Although each of these medications are indicated in the treatment of erectile dysfunction, their usage may be preferred, one over the other, by looking at how they different in action from each other and how well they are tolerated by the patient.

Below we examine the main differences of the PDE5 inhibitors.

Cialis vs Viagra, Levitra, Staxyn and Stendra 

Cialis has a much longer duration of action (up to 36 hours) comparative to Viagra (up to 5 - 6 hours) and Levitra/Staxyn (around 5 - 8 hours). The therapeutic duration here is related to the half-life of the medication. Cialis has a long half-life of around 14 hours whilst the half-life of Viagra is between 2 - 8 hours and Levitra's and Staxyn's half-life is approximately 6 hours.
Although side-effect profiles of Cialis, Levitra, Staxyn and Viagra are similar, a patient may tolerate and prefer one of these medications over the other, so doctors often recommend their patients to try the different types of ED medications available so they can choose the one that works best with little or no side-effects. One side-effect that seems to occur at a higher incident rate in Cialis than in the others, is lower back and limb pain.

Unlike the other PDE5 inhibitors Cialis is approved to treat benign prostatic hyperplasia. Although the other PDE5 inhibitor may be helpful in temporarily relieving symptoms of BPH, their short duration of action makes them impractical therapeutic treatment options.

What are the side effects of Cialis?

Below lists the most common side-effects of Cialis, they include but are not limited to:

  • Headache
  • Flushing
  • Nasal congestion
  • Nausea
  • Stomach cramp/upset muscle
  • Lower back pain
  • Dizziness
  • Blurred vision
  • Priapism

If you have a painful erection or prolonged erection that lasts longer than 4 hours seek medical attention. Speak with your doctor if you are concerned about any of these side-effects or if you have any other unexpected effects of Cialis.

Should I take Cialis with or without food?

Cialis can be taken with food or on an empty stomach. Food intake had no effect on the rate of absorption of Cialis.

Is it safe to drink alcohol when taking Cialis?

Alcohol is not contra-indicated with Cialis but alcohol can diminish the effects of Cialis by worsening the symptoms of ED. Drink responsibly when using Cialis for optimal effects.

What other drugs would interact with Cialis?

Cialis has interactions with many medications, some of which could be very serious interactions. It is essential that you inform your doctor and pharmacist of any medications you are currently taking when you are having your Cialis dispensed.

A very important drug interaction to be aware of with Cialis is it's interaction with nitrate medications. Nitrate, Cialis interactions are very serious and can be life-threatening so it is imperative that nitrates are completely avoided when using Cialis. Nitrates come in a variety of formulations from oral tablets, to sublingual, inhalations and patches.

Some well-known drugs that interact with Cialis are listed below. PLEASE NOTE this list is not complete.

  • Nitrates (read notes above)
  • Ketoconazole / itraconazole
  • Rifampin
  • Erythromycin
  • HIV treatments - ritonavir and saquinavir
  • Blood pressure medications
  • Alpha Blockers i.e. tamsulosin


Ordering Cialis online from a Canadian Pharmacy

If you went to your local pharmacy in the States recently with a Cialis prescription you may have been shocked by the price tag. We all know how important this medication is and how many men rely on this medication to bolster and maintain a healthy sex life, but at up to $70 a pill it simply isn't sustainable. With the huge disparity in the cost of Cialis in Canada to the States, many patients have been looking North to Canada to fill their Cialis prescription online with a Canadian pharmacy.

Canada Cloud Pharmacy is one such Canadian pharmacy that sells Cialis 20 mg. Unlike many other 'pharmacy' websites, Canada Cloud Pharmacy is a brick and mortar pharmacy that can deliver your Cialis prescription from Canada to the States. There is even the option of picking up your medication in store. The cost of Cialis in Canada is even more affordable than using a Cialis coupon to decrease the cost of Cialis. Cialis is for sale in Canada only with a prescription, so speak with your doctor if you are interested in trying Cialis.



Can Cialis cause ED?
Cialis is of course used in the treatment of ED, but some patients are concerned that they will be become reliant of Cialis and Cialis may even worsen ED symptoms. The reality is that if the underlaying issues that are causing ED are not addressed then it is likely the ED will not improve and you may continue to be reliant on Cialis. If the underlaying conditions are addressed and steps taken to improve these conditions, then ED symptoms can be resolved or improve and the need for Cialis may actual decrease over time.
Does Cialis cause low blood pressure?
As Cialis causes vasodilation it can cause a drop in blood pressure. While for most patients this decrease in blood pressure is never dangerous, some patients with high blood pressure, currently using blood pressure medication should monitor their blood pressure when using Cialis and decrease the dose of Cialis if necessary.
Is it safe to work out or exercise and lift weights when taking Cialis?
It is safe to weight train and exercise when using Cialis.
Can I buy Cialis over the counter?
Cialis is not sold over the counter in Canada. If you would like to buy Cialis in Canada you would require a prescription.
Can Cialis be used for women?
Cialis is unlicensed for women.
How long will Cialis 20 mg last?
Cialis has a therapeutic window of up to 36 hours, so it should work for you for up to 36 hours from the time you take the dose. It is often known as the weekend pill because if you take it on a Friday night you can still take advantage of the therapeutic benefits on the Sunday morning.
Is Cialis better than Vigra?
As detailed here above there are pros and cons of both medications. Cialis lasts longer than Viagra, which many people see as a big benefit, however some people tolerate Viagra better or vice versa. Speaking with your doctor about potentially trialling both medications is some times a good idea, but they should never be used at the same time.
Can I use Cialis at the same time as Viagra?
No, you should only use one PDE5 inhibitors at a time and allow for a washout period of at least 24 hours before switching between ED drugs.
Does health insurance cover Cialis?
Dependent on your plan, health insurance may cover Cialis. Speak with your provider for more information.
How often can I take Cialis?
There are two different dosage regimens of Cialis, on-demand and daily dosing. It is recommended that if you are haing sex more than twice per week to speak with your doctor about taking the lower daily dose of Cialis (5 mg - 2.5 mg). The maximum dose per day is 20 mg tablet but you shoud not take this dose every day, as accumulation may cause adverse effects.
How to safely buy Cialis from Canada in the States?
Do your research when buying Cialis from Canada. Make sure your source is a real, brick and mortar pharmacy, with a physical location. Many online websites claim to be pharmacies but are in reality, shipping medication from all over the world, seemingly wherever they can find it priced cheapest. Do not take risks with your health, be smart and ensure that the Cialis is Health Canada approved and shipped from a pharmacy in Canada.
What is the active ingredient in Cialis?
The active ingredient in Cialis is tadalafil.
Is Cialis the same as tadalafil?
Tadalafil is the chemical name, or active ingredient in Cialis. The generic version of Cialis is therefore duly called 'tadalafil'. Tadalafil is available in Canada as a generic version of Cialis and is approved to be safe, effective and in the bioequivalent range of Cialis. It is used to treat the same conditions and has the same safety and efficacy profile.
Is there a generic of Cialis available in Canada?
Yes, Cialis lost it's patent some time ago here in Canada, meaning there is a Health Canada approved generic available.
Is a prescription needed to purchase Cialis?
Yes, absolutely a prescription is needed to purchase Cialis or any other prescription only medication. Be very wary of anyone that sells Cialis without a prescription.
When is the generic for Cialis coming out?
Cialis lost its patent. A generic of Cialis is already available for purchase providing you have a prescription from a medical doctor.
Is Cialis better than Levitra?
There are pros and cons of Levitra compared to Cialis. Read the information above for a more indepth look at how they compare and give us a call if you have further questions at all.
Is Cialis that's out of date okay to take?
All medication has an expiry date, dependent on the stability of the formulation. Although tablets are the most stable of all common medication formulations they do expire. When a drug such as Cialis expires the most common thing that happens is that the drug degrades and becomes much less potent. However, there is a potential for harmful degradation products, particularly if the medication has been expired for a long time. Our advice is to stick to using medication within the expiration range and contact your pharmacy if you have any doubts.



Buy Cialis 20 mg from Canada 

Information contained here on this page is for informational purpose only. Always speak with your Doctor about the usage of your medication. 


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College of Pharmacists

Information available on this website is for informational purposes only and should not be relied upon as specific advice for you. Do not rely on the information without seeking advice from a professional. You should not use the information contained on this website for diagnosis, treating, or preventing health problem. Always consult your own physician for advice and treatment.

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