Sildenafil Erectile Dysfunction Tablets
Sildenafil citrate

Sildenafil Tablets

With Felix, you can get Sildenafil (Viagra) prescribed by a licensed healthcare practitioner and delivered to your door for free.

At a glance
Sildenafil citrate
25mg, 50mg, 100mg tablets; packs of 4
Why Felix
Prescribed by a Canadian healthcare professional
Support and resources along your journey
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What is

Sildenafil is a treatment for erectile dysfunction in male adults. This is when a man cannot achieve or maintain a hard, erected penis for satisfactory sexual activity.

It is important to note that sildenafil works only with sexual stimulation. Sildenafil alone does not increase your sex drive.

For more resources, including a full list of the risks and benefits of sildenafil, please review the product monograph.

How does

Sildenafil belongs to a class of medicine called phosphodiesterase type 5 (PDE5) inhibitors.

Following sexual stimulation, sildenafil works by helping to relax the blood vessels in your penis by allowing blood to flow into your penis. This results in improved erectile function.

It’s important to note that sexual stimulation is still needed for Sildenafil to function.

What is
used to treat?

Sildenafil is primarily used as a treatment for men with erectile dysfunction, who are having trouble getting or maintaining an erection that lasts long enough to perform sexual activities.

How do you take

Sildenafil should be taken 30-60 minutes before planning to start sexual activities. However, it can be taken 30 minutes to 4 hours prior to sexual activity.

Dosage will depend on what your healthcare practitioner believes is the best choice for you. The most common dosages are 50mg or 100mg, but in some cases, 25mg doses are used.

Never take more than the recommended dosage of sildenafil, and don’t take more than one dose within a 24-hour period. I

f you have questions about how to use sildenafil safely and effectively, talk to your healthcare practitioner at Felix. They’ll be able to give you any guidance you need.

How long does
last after you take it?

What are the common side effects of

The most common side effects from taking sildenafil include:

  • Headache
  • Flushing
  • Indigestion (dyspepsia)
  • Nasal congestion
  • Respiratory tract infections
  • Flu syndrome
  • Urinary tract infection’
  • Abnormal vision
  • Diarrhea
  • Dizziness
  • Rash
  • Back pain
  • Joint pain (arthralgia)

If you start to experience any serious side effects when taking sildenafil, you should talk to your healthcare practitioner at Felix immediately. They may be able to suggest alternative medications or dosages that may work better for you.

In rare cases, patients may experience priapism (an erection lasting more than 4 hours). If this occurs, you should seek immediate medical attention to ensure your safety.

Who shouldn't take

There are a number of people who shouldn’t use sildenafil prescriptions, such as:

  • People taking medications that include nitrates
  • People under the age of 18
  • People who have had an allergic reaction to sildenafil in the past
  • People who have previously experienced a condition called non-arteritic anterior ischaemic optic neuropathy (NAION)
  • People taking guanylate cyclase stimulators (i.e., riociguat)
  • People who have been advised against sexual activity

In addition to these people, there are others that should be cautious about using sildenafil, because of other underlying conditions.

You should talk to your healthcare practitioner at Felix if you:

  • Have heart disease
  • Have had a heart attack or stroke
  • Are over the age of 65
  • Have low or uncontrolled high blood pressure
  • Have kidney or liver problems
  • Have sickle cell anemia, multiple myeloma, or leukemia
  • Have a deformed penis
  • Have Peyronie’s disease
  • Have ever had a priapism (an erection that lasts more than 4 hours)
  • Have stomach ulcers or other bleeding problems
  • Have retinitis pigmentosa
  • Have ever had temporary or permanently loss of vision in one or both eyes

Sildenafil is not intended for use in women or people assigned female at birth.

What happens if
is taken regularly by men?

02248203, 02248202, 02308746, 02469669, 02412179, 02406152, 02414384

We’d love to tell you more

Health Canada regulations require us to confirm your patient status to access further information on Sildenafil.
The drug identification number (DIN) is easy to find. It’ll be printed on your Sildenafil packaging and the receipt from your pharmacist.

Sorry the DIN you entered is incorrect. Please verify the number and try again.

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How Felix works

Step 1

Tell us about your health

Answer a few simple questions about your health.

Step 2

Receive a treatment plan

Your healthcare practitioner will build a personalized plan just for you.

Step 3

Get your medication

We’ll deliver your medication directly to your home for free in discreet packaging.

Trusted by over 500,000 Canadians

Very easy and professional experience. Quick response from the doctor and easy ordering, billing and shipped and delivered on time. Hassle free.
Great service and products. Everything always arrived in a timely manner.
Simple, respectful, professional with good follow up and guidance, and fast service and delivery.
Best place to get birth control. No more annoying doctor visits
Within an hour . . . a doctor contacted me to make sure that particular medication was what I wanted. Doctor was friendly and knowledgeable. Within minutes . . . being confirmed my order was put through and I received my medication after 2 days.
Great service! I really appreciate being able to put my auto-refill on pause.
Easy and simple.
The best service!!! So happy I never have to try and get myself to the pharmacy anymore. This is the future!!!
The whole process of signing up with Felix, the online visit, and getting my prescription in the mail was very easy and very convenient.
Super convenient, and amazing customer service! The team always responds +++ fast and answers every question and concern. Very pleased with Felix!
Discreet, quick, very professional, and feels totally safe. This is such a convenient service and I'm a huge fan already.
Sign up was a breeze, and items shipped faster than expected. A positive, painless experience from start to finish!
Felix gets you into contact with doctors discreetly online to address personal matters that you'd rather not go to a doctor in person to see, you get the prescription best suited to your needs, and they'll deliver it to your local pharmacy or even your house!
Very quick and easy to do. Can ask the doctor any questions about the medication.
The process was a whole lot easier and faster than I imagined. And the doctor was absolutely helpful and answered relatively fast. I highly recommend Felix.
Super convenient and affordable! Much easier than having to book a doctors appointment and wait to get a prescription filled.

Other medications



  • Sildenafil Citrate
  • 50mg and 100mg tablets / pills; packs of 4


  • Tadalafil
  • 2.5mg, 5mg, 10mg, 20mg; packs of 4 or 28


  • Tadalafil
  • 2.5mg, 5mg, 10mg, 20mg tablets; packs of 4, 28, or 30

Frequently asked questions


Is Sildenafil safe for me?

During your online visit you'll be asked for information about your health history for the doctor to review. Your Felix doctor will use this information to determine safety and potential side effects.

Does Sildenafil expire?

Yes, Sildenafil does expire. Always check the expiration date on your prescription before taking it.

Can I get a sildenafil prescription online?

Yes, you can get an online sildenafil or viagra prescription in Canada, but first, you need to speak with a licensed healthcare practitioner - like the experts at Felix

Once you’ve completed a short online assessment, if your practitioner believes that sildenafil is right for you (based on your health and medical history), they’ll be able to provide a prescription.

Do I need an appointment to get a Sildenafil prescription in Canada?

No, there’s no need to waste time sitting around a doctor’s office or waiting weeks for an appointment. Not when you have Felix in your corner.

Just complete an online assessment, and if your healthcare practitioner believes that sildenafil is the right choice for you, they can write you a prescription for it.

Best of all, Felix can deliver your medication discretely to your home, for free!

How do I get a sildenafil prescription?

The only way to get a sildenafil or viagra prescription in Canada is to first speak with a licensed healthcare practitioner (like the ones at Felix).

If your healthcare practitioner believes that sildenafil could be the right choice for you, based on your current health and medical history, they can provide you with an online sildenafil prescription.

Can I buy sildenafil online?

The only way to buy sildenafil online in Canada is to first get a prescription from a licensed healthcare practitioner.

Felix is making this process quick, convenient, and comfortable for Canadians by providing online assessments with licensed experts.

And in addition to filling your prescription for you, Felix can discreetly deliver your medication directly to you, at no additional cost.

Is sildenafil available over-the-counter?

No, sildenafil is not available as an over-the-counter medication in Canada. In order to access sildenafil, you must first speak with a licensed healthcare practitioner, like those at Felix.

Thankfully, Felix is making it quick and seamless for Canadians to access sildenafil online. Just complete an online assessment, and if your practitioner believes it’s right for you, they can provide you with a sildenafil prescription.

Plus, Felix can discreetly deliver your medications right to your door, at no extra cost.

Is sildenafil covered by insurance?

It is best to ask your insurance provider since every company and specific benefits package will look a little differently.

The good news is that if your insurance does cover sildenafil, Felix can bill them directly, and then ship your prescription right to you - for free.

It's important to note that insurance coverage for online medications through Felix doesn't include the cost of your assessment.

Felix 101

What is Felix?

Felix is Canada’s first truly integrated healthcare platform. We provide on-demand treatment for everyday health needs like weight loss, mental health, sexual health, and more. Founded in 2019, our digital-first approach to healthcare includes everything from diagnosis to prescription — all accessible from the comfort of home.

Who can use Felix?

Anyone who is 18 years or older older (16 or older for acne and birth control prescriptions), and is located in Alberta, British Columbia, Manitoba, Newfoundland and Labrador, Nova Scotia, Prince Edward Island, Saskatchewan or Ontario. We cannot ship treaments outside of these provinces at this time.

Does Felix replace my doctor?

No. Felix provides a faster, hassle-free way for you to get a prescription to certain medications but our service does not replace your primary care provider. For matters that extend beyond obtaining a prescription lifestyle medication safely and easily, we encourage you to consult your primary health practitioner in person — whether for checkups, personal health concerns, or to inform them about the medications you are currently using.

Can I be accurately assessed remotely?

Absolutely. Our online assessments have been designed to ask all the necessary questions required for diagnosis. We've worked with specialist to create an assessment process that can provide sufficient information for the healthcare practitioner to determine whether or not you are eligible for a prescription and craft an appropriate treatment plan.

It's an emergency. What do I do?

Call 911 or proceed to your nearest emergency room immediately. Felix is not intended for medical emergencies. Once the emergency has been addressed or resolved, contact your prescribing practitioner to inform them of your experience as this may impact your current treatment plan.

Online Visits

How does this visit work?

After creating an account, you will complete a medical assessment for evaluation by one of the Felix healthcare practitioners. 

During your assessment, you will have the opportunity to send your practitioner questions via secure messaging.  

In most cases, practitioners will complete your assessment with secure messaging alone but sometimes they may determine you require an audio or video visit and/or further diagnostic testing to help determine the best treatment plan for you. 

If your practitioner has determined a prescription treatment is appropriate, they will approve your visit and write you a prescription. Our pharmacy will then ship your prescription to your home.

You’ll be able to message your healthcare practitioner if you have questions about your medication or want to make changes to your treatment at any time.

Do I need to complete my online visit at a scheduled time?

No. We use an asynchronous telemedicine model so you can complete your online visit in your own time and we save your progress so you can come back later to finish it.

If you are completing a visit in the mental health or weight loss categories, your healthcare practitioner may require a phone or video call to discuss your medical profile further during the assessment process.

Does the online visit require a phone or video appointment?

Most assessments do not require a phone or video conversation. Once a prescriber has reviewed the info in your assessment they will respond to you via secure instant messages that you can access within your Felix account.  

If you are completing a visit in the mental health or weight loss categories, your healthcare practitioner may require a phone or video call to discuss your medical profile further during the assessment process.

How quickly will a healthcare practitioner review my online visit?

You can expect to receive a response from a healthcare practitioner within 24 hours of submission. If you’ve been waiting longer than this, please email and we’ll look into it.

Can I just get the medication and skip the online visit?

No. A prescription written by a licensed healthcare practitioner is required for all medication currently provided through Felix’s service. If you already have a prescription with at least one refill remaining, you can transfer it to the Felix Pharmacy network.

Please email our Customer Support team at and they will be able to assist you with the transfer.

Privacy and Security

Is my information private and secure?

Yes, your security is paramount to Felix’s mission. Personal health information provided during your medical assessment is strictly and legally confidential between you and the Felix healthcare practitioner.

Beyond that, all your account information (including the medical assessment, credit card, and shipping information, etc.) is also stored safely and securely. Felix is compliant with all federal and provincial health privacy legislation. It is our duty to protect your data with comprehensive security infrastructure and stringent data policies to ensure it stays private and secure.

Read more on our Privacy Policy.

Is this legal?

Yes! In Canada, only a licensed healthcare practitioner can write a prescription, and only a registered pharmacist can fill that prescription. We are supported by leaders in the Canadian pharmacology and specialized medical fields. Felix adheres strictly to all the regulations set forth by all applicable Colleges of Pharmacists and Colleges of Physicians and Surgeons in which we operate.

Is this safe?

Absolutely. All prescriptions obtained via Felix are provided by licensed Canadian healthcare practitioners—the same as you would get at a hospital, doctor’s office, or clinic. These practitioners do not provide prescriptions unless they deem it medically safe and appropriate to write them based on your medical profile and assessment answers. Our assessments have been crafted by the experts on our medical team. Finally, all Felix Pharmacies are provincially accredited just like any retail pharmacy.

How is my privacy protected?

Your privacy is our top priority. All your data is 256 bit SSL/TLS encrypted, and we take significant steps to keep your data secure. You can read our Privacy Policy for more information. 


How long will it take to get my treatment?

Not long. After completing your assessment, a practitioner will generally respond within 24 hours, and often much sooner.

Treatment plans will be processed within 2-3 business days of your approval date if there is nothing blocking fulfillment.

All packages are shipped via Express Post, which usually takes 2-3 business days. You will receive an email with your tracking number once your treatment has been shipped.

Is your packaging discreet?

Absolutely. All Felix shipments arrive in a nondescript blister package so you can have your treatment shipped wherever makes sense for you as long as there is someone there to sign for it.

Do I have to be home to receive my package?

A signature upon delivery may be required.

How much does it cost to ship my treatment?

There is currently no cost to have your treatment shipped to you from our Felix Pharmacy network.

What courier do you use for shipping?

Our pharmacy partners use Canada Post and/or Purolator for shipping.

Pricing and Payment

How much is the online visit?

Felix charges a fee for the online visit, but only if and when you are approved by the healthcare practitioner. In most cases the fee is $40 but varies by treatment category. The visit fee includes a prescription valid for up to a year (depending on the condition) and on-going support from the healthcare practitioner or pharmacist.

How much will my medication cost?

It depends. Medication costs vary from treatment to treatment but will be in line with what you would pay at a pharmacy in person. You will see the estimated cost of your medication before insurance, during the online visit but will only be charged once approved. Once approved, your prescription will be sent to the pharmacy and we will process the payment and fill the prescription within one to two days.

Keep in mind that you won’t necessarily need to pay the full price yourself. If you have insurance, Felix’s partner pharmacies will bill your insurer directly. You may also be eligible for financial support in your province.

What payment methods do you accept?

We accept all major credit cards for any aspect of your treatment not covered by insurance or other financial support

When am I charged?

You will be charged for the online visit as soon as it is approved by the healthcare practitioner. From there, and after your prescription is activated by the pharmacy, you will be charged the medication cost for each shipment based on your chosen refill schedule. If you have provided insurance or benefits coverage details, it will be applied according to your plan.


Am I covered by my insurance?

Treatment coverage varies greatly between different insurance plans.

The good news is that if you are covered, Felix can bill your insurer directly, and then process your treatment plan at no additional cost to you. We recommend that you upload your private and/or provincial benefit card during the online visit so that our pharmacy partner can apply any coverage you are eligible for before processing your treatment plan.

Insurance coverage for treatment plans through Felix doesn't include the cost of your visit.

Is the online visit covered by my insurance or provincial health plans?

A Felix online visit is considered asynchronous since it is conveniently completed through a secure chat bases system. Currently, asynchronous visits are not covered by insurance or provincial health plans so you will be charged a visit fee, depending on the category of treatment you are requesting.

Is the medication covered by my insurance or provincial health plans?

Medication coverage varies greatly between different plans, provinces, and has specific criteria that determine eligibility. For private insurance, we recommend contacting your benefits administrator with your details and the Drug Identification Number (DIN) and the drug name to determine your coverage.

For more details on provincial health plan coverage see below:

Alberta: Learn more about AHCIP here. Search for covered drugs here.

British Columbia: Learn more about MSP here. Search for covered drugs here.

Manitoba: Learn more about MHSIP here. Search for covered drugs here.

Newfoundland and Labrador: Learn more about MCP here. Search for covered drugs here.

Nova Scotia: Learn more about MSI here. Search for covered drugs here.

Ontario: Learn more about OHIP+ here. Search for covered drugs here.

Prince Edward Island: Learn more about Health PEI here. Search for covered drugs here.

Saskatchewan: Learn more about Saskatchewan Health Coverage here. Search for covered drugs here.

Is birth control covered by OHIP in Ontario?

OHIP+ covers some birth control for eligible residents of Ontario who are under 25 years old and do not have private insurance. You can check if your birth control medication is covered here. Make sure to upload your Ontario health card during your online visit so our pharmacy partners can apply your coverage directly.

Have more questions? We’ve got answers.
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