Tadalis SX (Tadalafil 20 mg Tablets)

Tadalis SX
Generic:
Tadalafil
Indications:
erectile dysfunction impotence
Analogs:
Cialis Tadalafil Adcirca Viagra Sildenafil Levitra Vardenafil Stendra Spedra Avanafil Caverject Muse Alprostadil Zydena Udenafil
Tadalis SX delivers tadalafil 20 mg in a single fixed-strength tablet, packed in quantities from 30 to 180 pills. We explain how it works, how it compares with other tadalafil and PDE5 options, and what to expect when you order it from us in Canada.
In stock: 16 packs
AdultsPregnancyAllergiesDiabetesBreastfeedingChildrenDriving

Dosages

Tadalis SX 20 mg

Quantity Price per tablet You save Total price
30 C$2.15 - C$64.40
60 C$1.68 C$28.00 C$100.80
90 C$1.54 C$54.60 C$138.60
120 C$1.45 C$84.00 C$173.60
180 C$1.39 C$135.80 C$250.60

Manufacturers

Ajanta Pharma LimitedEli Lilly and CompanyTeva Pharmaceutical Industries

Payment & Shipping

Package Example

Your order is securely packed and usually ships within 24 hours. Here is what a typical parcel looks like.

It is about the size of a regular letter (24x11x0.7 cm) and does not show any details of what is inside.

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Shipping Times
Shipping MethodEstimated delivery
Express Free for orders over C$420.00Estimated delivery to Canada: 4-7 days
Standard Free for orders over C$280.00Estimated delivery to Canada: 14-21 days
EMSCanada Post
Payment Methods
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Discount Coupons

  • Victoria Day - May 18, 2026 8% VICTORIA8
  • Canada Day - July 1, 2026 10% CANADADAY10
  • Labour Day - September 7, 2026 6% LABOUR6
  • Thanksgiving (Canada) - October 12, 2026 9% THANKS9
  • Boxing Day - December 26, 2026 12% BOXING12

Brand Names

Also known as (by country):
CountryBrand Names
Canada
Adcirca Cialis
United States
Adcirca Alyq Cialis
United Kingdom
Cialis
France
Cialis
Australia
Cialis
Germany
Cialis
Italy
Cialis

FAQ

Not necessarily. Generic tadalafil tablets may differ from a brand-name product in colour, shape, size, markings, packaging, and inactive ingredients. Check the received package for tadalafil, 20 mg strength, tablet dosage form, manufacturer information, lot number, expiry date, and any imprint present.

Description

The first thing worth knowing about Tadalis SX is that it comes in exactly one strength: 20 mg tadalafil tablets. Unlike some tadalafil products that are supplied in several strengths so a prescriber can titrate a dose up or down, Tadalis SX gives a single fixed dose, and our only choice is how many pills to order at once. That distinction matters practically: a customer comparing options should decide upfront whether a flexible, multi-strength product or a consistent, single-strength tablet fits their planned use better, since Tadalis SX does not offer a lower-strength alternative within the same product line.

We offer Tadalis SX as an oral tablet, and this article works through its established role, how it acts in the body, how a typical routine is built around it, what timing and safety points matter most, what alternatives exist, how access and prescription rules apply in Canada, and what actually happens after an order is placed with us.

What Tadalis SX Is and Where It Fits

Tadalis SX contains tadalafil, a phosphodiesterase type 5 (PDE5) inhibitor used to treat erectile dysfunction in adult men. Tadalafil is the same active ingredient found in the brand-name product Cialis, and Tadalis SX is formulated as an oral tablet taken by mouth. We sell it strictly as the 20 mg tablet, in package quantities of 30, 60, 90, 120, or 180 pills, so every option in our catalogue for this product shares the same strength and only the quantity changes.

Tadalafil belongs to a well-established drug class that also includes sildenafil and vardenafil. What sets tadalafil apart from those other PDE5 inhibitors is its long duration of action, which is why it is sometimes referred to informally as a longer-acting option among erectile dysfunction treatments. This duration is a property of the ingredient itself, not something specific to the Tadalis SX brand, but it is central to why many people choose a tadalafil-based tablet over a shorter-acting alternative.

Who May Consider Tadalis SX?

Tadalafil tablets are intended for adult men with erectile dysfunction, and the decision to use them should take into account overall health, current medications, and personal preference around timing and spontaneity. A few practical factors tend to guide whether Tadalis SX is a reasonable fit:

  • A preference for a single tablet that can remain effective well beyond the several hours typical of shorter-acting PDE5 inhibitors.
  • A routine where sexual activity is not always planned to a precise hour, since a longer window of effect reduces the need for exact timing.
  • No use of nitrate medications, since combining tadalafil with nitrates is strictly contraindicated due to the risk of a significant drop in blood pressure.
  • No history of hypersensitivity to tadalafil or to any tablet ingredient.
  • A stable cardiovascular status, since sexual activity itself carries a cardiac demand that a prescriber or pharmacist can help assess.

Tadalafil is not indicated for women and is not authorised for use in anyone under 18 years of age. People managing diabetes are commonly prescribed tadalafil without special dose adjustment, since diabetes is not a listed restriction for this ingredient.

How Tadalafil Works in the Body

Sexual stimulation triggers the release of nitric oxide in penile tissue, which raises levels of a molecule called cyclic GMP (cGMP). Elevated cGMP relaxes smooth muscle in the penile arteries, allowing increased blood flow that produces an erection. An enzyme called PDE5 normally breaks cGMP down, which limits this effect. Tadalafil works by inhibiting PDE5, so cGMP is preserved for longer and the increased blood flow that follows stimulation is easier to achieve and sustain.

How Tadalis SX Works

This mechanism explains two practical points. First, tadalafil does not create an erection on its own; sexual stimulation is still required for the process to begin. Second, because tadalafil's effect on PDE5 persists for an extended period compared with shorter-acting options, its practical window of usefulness is longer, which is one of the main reasons people choose a tadalafil tablet like Tadalis SX over an alternative with a shorter duration.

How Should You Take Tadalis SX and Build a Routine?

Tadalis SX tablets are taken by mouth with or without food. Food does not meaningfully affect tadalafil absorption, so a dose does not need to be coordinated with a meal. Establishing a routine with tadalafil tends to be more straightforward than with shorter-acting PDE5 inhibitors precisely because of its longer window of action, which reduces the pressure to time a dose around a specific moment.

General use for erectile dysfunction typically follows one of two patterns established for tadalafil: an as-needed tablet taken before anticipated sexual activity, or a lower daily dose used continuously. Because we offer Tadalis SX only at 20 mg, it is best suited to the as-needed pattern rather than a daily low-dose routine, and a prescriber is the right person to confirm which pattern and frequency suit an individual's health profile. Tadalafil should not be taken more than once daily regardless of the intended pattern.

Package Sizes and Options We Offer

We keep the Tadalis SX offer simple: one strength, several quantities, so the only decision is how much supply to order at once. Our current package quantities are:

  • 30 pills
  • 60 pills
  • 90 pills
  • 120 pills
  • 180 pills

Larger package quantities generally suit someone who already knows tadalafil works well for them and wants to avoid reordering frequently, while a smaller quantity is a sensible way to first confirm how the tablet suits an individual before committing to a larger supply.

When Can You Expect Results?

Tadalafil generally begins to take effect within about 30 minutes to 2 hours after taking the tablet, though this varies between individuals. Its defining practical feature is duration rather than speed: its effect can last up to about 36 hours, which is substantially longer than shorter-acting PDE5 inhibitors. This extended window is why tadalafil is sometimes discussed in terms of a weekend of flexibility rather than a single planned encounter.

Consistent effectiveness across repeated use is common, though tadalafil, like other PDE5 inhibitors, works best alongside adequate sexual stimulation and is less reliable when underlying causes such as uncontrolled cardiovascular disease or very low testosterone are unaddressed.

Important Safety Priorities Before You Order

Tadalafil is generally well tolerated, but several safety points deserve attention before starting it:

  • Nitrate medications, including short-acting nitroglycerin used for chest pain, must never be combined with tadalafil because of the risk of a dangerous blood pressure drop.
  • Common side effects include headache, flushing, nasal congestion, indigestion, back pain, and muscle aches, most of which are mild and temporary.
  • Rare but serious effects include a sudden decrease or loss of vision or hearing, and a prolonged or painful erection lasting more than four hours, either of which requires urgent medical attention.
  • People with a history of heart attack, stroke, uncontrolled arrhythmia, or unstable angina should discuss tadalafil with a prescriber before use.
  • Tadalafil can occasionally cause dizziness, so it is worth understanding how the tablet affects you before driving or operating machinery.

Tadalis SX should be stored at 25°C, with brief excursions between 15°C and 30°C considered acceptable, kept in its original container and away from moisture.

What Interactions and Precautions Matter?

Beyond the nitrate contraindication, several other interactions and health conditions are worth reviewing with a pharmacist or prescriber before use:

  • Alpha-blockers used for blood pressure or prostate symptoms can compound tadalafil's blood-pressure-lowering effect and generally require careful dose timing.
  • Strong CYP3A4 inhibitors, such as certain antifungal and HIV medications, can raise tadalafil levels and may call for a lower dose or closer monitoring.
  • Alcohol in larger amounts can increase the likelihood of dizziness or a blood pressure drop when combined with tadalafil.
  • Grapefruit juice can modestly increase tadalafil exposure in some people.
  • Liver or kidney impairment can change how tadalafil is processed and may warrant a different dosing approach.

A prescriber who knows a person's full medication list and health history remains the best source for confirming whether tadalafil is appropriate alongside any current treatment.

Tadalis SX Compared With Levitra: Which Fits Your Situation?

Tadalis SX vs. Levitra Comparison

FeatureTadalis SXLevitra
Active ingredientTadalafilVardenafil
Medication classPDE5 inhibitorPDE5 inhibitor
Dosage formTabletTablet
Available strengthsTadalafil 20 mgVardenafil 5 mg, 10 mg, 20 mg
Typical duration of actionUp to 36 hoursApproximately 4 to 5 hours
A comparison of two PDE5 inhibitor options for erectile dysfunction.

Levitra, whose active ingredient is vardenafil, belongs to the same PDE5 inhibitor class as Tadalis SX but behaves differently once it is in the body. Vardenafil's effect typically lasts several hours rather than the extended window associated with tadalafil, which tends to suit someone who prefers a more predictable, short window tied closely to a planned occasion. Tadalis SX, built on tadalafil, favours a routine where flexibility over a longer stretch of time matters more than precise timing. Neither option is inherently better; the meaningful distinction is duration and how that duration matches a person's lifestyle and planning habits. For someone who already knows they respond well to tadalafil specifically, the original brand-name Cialis shares the same active ingredient as Tadalis SX, though it is offered under a different brand and pricing structure in our catalogue. Anyone still exploring which PDE5 inhibitor suits them can also browse our broader erectile dysfunction selection for additional context before deciding.

Tadalafil's Regulatory Status and Prescription Context in Canada

Tadalafil is authorised for human medicinal use in Canada, and the dosage form we sell carries a prescription classification in this market, consistent with how PDE5 inhibitor tablets are generally regulated here. Separately, our own ordering process for Tadalis SX does not require a prescription to be submitted before we accept an order, which reflects our checkout policy rather than a change to tadalafil's legal classification. These are two distinct facts: how Canadian regulation classifies the tablet and what we require at checkout, and we keep both accurate rather than blending them into a single claim.

Ordering, Delivery, and Receiving Your Package

Placing an order with us for Tadalis SX follows a straightforward sequence:

  1. Choose a package quantity from the 30, 60, 90, 120, or 180 pill options and add it to your order.
  2. Complete checkout in Canadian dollars using our available payment methods.
  3. Provide a delivery address, including the correct postal code, so our shipping partners can route the package accurately.
  4. Receive order confirmation and tracking details once your package has been dispatched from our facility.
  5. Contact our support team by email, online chat, or phone, available 24/7 with a pharmacist on hand, if any question comes up before or after your package arrives.

We have been operating since 2017, and our packing and dispatch process is built around discreet, careful handling from the time an order is confirmed to the moment it reaches a customer's door. Delivery timing is best treated as an estimate rather than a guarantee, since carrier handling and destination can shift the exact day a package arrives.

Making Your Decision

Tadalis SX's defining feature is simplicity paired with duration: one tablet strength, a straightforward set of package quantities, and an active ingredient whose extended window of action distinguishes it from shorter-acting PDE5 inhibitors like vardenafil-based Levitra. Choosing it comes down to whether that longer, more flexible window suits a person's routine better than a shorter, more tightly timed alternative, and whether a single fixed strength meets their needs without requiring dose adjustment. Once that decision is made, ordering, payment, and delivery through us follow the process outlined above, with our support team available at any point along the way.

Medically reviewed by
Wendy Hayes
Clinical pharmacist
Updated September 6, 2026

Product specifications

Active ingredientTadalafil
Drug classPhosphodiesterase type 5 (PDE5) inhibitor
Dosage formTablet
Available strengths20 mg
Route of administrationOral
StorageStore at 25°C; excursions permitted from 15°C to 30°C. Keep in the original container, protected from moisture.
ATC codeG04BE08

Regulatory information

Market AuthorizationTadalafil is approved for human medical use in Canada.
Prescription StatusTadalafil tablets are classified as a prescription medicine and require a valid prescription from a licensed healthcare provider in Canada.

More information