Sildenafil is a type of medication used to treat erectile dysfunction, a condition where men find it difficult to get or maintain an erection. It is the generic version of the brand name drug Viagra.

Sildenafil increases blood flow to the penis so you can get and keep an erection.

You can take Sildenafil as needed although you should only use it once in any 24 hour period. Sildenafil is available as a pill in 25mg, 50mg and 100mg, depending on what you and your doctor determine to be most suitable for your needs.

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Usually, Sildenafil will start to work within 30 to 60 minutes. If you’re wondering when to take Sildenafil, you can take it up to four hours before sexual activity.

If you have erectile dysfunction and normally find it difficult to get or maintain an erection, Sildenafil might cause your erection to feel bigger but it will not make your penis physically larger than its regular size.

Sildenafil is not a treatment for premature ejaculation, so it usually won’t impact the amount of time you can have sex for before you ejaculate.

Sildenafil won’t make you hornier or help you feel sexually aroused when you otherwise wouldn’t be interested in sex. Sildenafil simply makes it easier to get an erection when you’re already sexually aroused.

Sildenafil isn’t for everyone. You should not take Sildenafil if any of the following conditions apply to you:

• You have previously experienced an allergic reaction to Sildenafil (Viagra) or any other medicines in the past
• You are taking medicines called nitrates for chest pain
• You are currently taking take any guanylate cyclase stimulators, like riociguat (adempas)
• You are using drugs such as amyl nitrate or amyl nitrite, and butyl nitrate, also known as poppers. 
• You have a serious liver or heart problem
• You have low blood pressure or a condition that may lower blood pressure like aortic stenosis or hypertrophic obstructive cardiomyopathy
• You have recently had a heart attack or stroke
• You are taking other medication for erectile dysfunction, such as Cialis.

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In Canada, Sildenafil is not available over the counter, so you will always need a prescription from a doctor first.

If you are experiencing the symptoms of erectile dysfunction and are seeking a prescription for Sildenafil, talk to a doctor about whether it is the right solution for you.

There are other medication options besides Sildenafil such as Tadalafil, also known as Cialis.

Beyond medication, consider address potential lifestyle causes of erectile dysfunction, including diet, alcohol consumption and exercise levels.

Yes, Sildenafil does expire. Once a year has passed since your prescription was dispensed, the Sildenafil is considered to have expired. After this time it starts to become less effective, and is therefore not recommended.

Common Sildenafil side effects include flushing, lightheadedness, headache, runny nose, or nausea.

If you develop an erection that lasts longer than 3 hours please go to the emergency department - this is a rare but dangerous side effect called priapism.

There have been exceedingly rare reports of non-arteritic anterior ischemic optic neuropathy - a condition that impacts sight - although most experts do not believe this to be related to ED medications.

It is recommended that you see a doctor in person for this issue, for a full physical exam and blood work to determine if there is an underlying cause like diabetes, vascular disease or low testosterone

During your online visit we’ll ask 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.

Felix is an end-to-end platform where you can get prescription treatments through an online visit with a licensed Canadian doctor including free shipping directly to your door. 

You can buy sildenafil from a pharmacy only after you’ve obtained a prescription for the drug. In Canada, sildenafil is not available over the counter. This means that you have to get a prescription from a doctor before you can buy it. If you’re experiencing symptoms of erectile dysfunction, such as difficulty getting or maintaining an erection, talk to a doctor about your symptoms and whether or not sildenafil, better known by the brand name Viagra, is right for you. Just because sildenafil is available by prescription only doesn’t mean it isn’t widely used and very safe. Like all medications, there is some risk for side effects and speaking to a healthcare practitioner first will allow them to understand your unique situation and risk factors while making you aware of what you should know when taking sildenafil. With a prescription, you can also buy sildenafil online by using an online healthcare provider like Felix. You can transfer an existing prescription to Felix, or get one by completing an online visit with Felix, and order sildenafil discretely right to your door, skipping the trip to the pharmacy. That way, you’ll always know you have it on hand when you need it. 

You can buy sildenafil by visiting your local pharmacy with a prescription or by getting your prescription through an online healthcare provider like Felix. You can’t buy it at a regular drug store or any other over-the-counter retailer, because it’s a prescription-only medication. While it’s effective and safe and has been used for years to help people experiencing erectile dysfunction, a doctor must understand your specific situation and any other drugs you may be taking to ensure that sildenafil is right for you. Once you have a prescription, you can get it filled at any pharmacy. Since it’s a common drug, it’s typically in stock at many pharmacies. However, as is always the case when getting prescriptions filled in person, you may have to wait a while for the pharmacist to get around to filling your prescription. A quicker, easier way to buy sildenafil is to order it online through Felix. You can set up an online visit and get a prescription right through the platform, or get an existing prescription transferred over. Once this is done, you’ll be able to order sildenafil right to your door so you always have it. It’s one of those things you’ll be glad you don’t have to run out and grab when the mood strikes.

Sildenafil is prescribed for erectile dysfunction, or ED. The most common symptoms of ED include difficulty getting an erection and difficulty maintaining an erection for long enough for satisfying sexual activity. While these can occur in anyone from time to time, ED refers to the persistent nature of these symptoms. Many common factors can contribute to ED. These include psychological factors such as anxiety, stress, an unbalanced diet, excessive alcohol consumption, smoking, drug use, sleep issues, and age. We all encounter at least some of these factors in our day-to-day lives, making ED a common issue. Erections occur when nitric oxide is released from penile nerve endings and endothelium, as a result of sexual stimulation. Nitric oxide then stimulates the production of cyclic GMP, which leads to relaxation of the penile smooth muscle tissue. This allows for increased blood flow to the penis. If there is some other underlying cause for your ED, such as an undiagnosed disease, it may be necessary for that underlying cause to be treated first. However, for most people, sildenafil or its brand-name counterpart, Viagra is a safe, effective, and fast-acting solution to a common problem, allowing you to get back to enjoying sex without worrying about being unable to get or maintain an erection.

You can buy sildenafil citrate with a prescription at a pharmacy or through an online healthcare platform like Felix. Sildenafil citrate, often shortened to sildenafil or more commonly known by its most famous brand name, Viagra, is prescribed for those experiencing symptoms of erectile dysfunction. It’s a safe, effective and widely used drug, but like all prescription drugs, requires that you talk to a doctor first to make sure it’s safe for you and learn about what to expect when taking it. It is not available over-the-counter, so if you come across any other-the-counter products that make similar claims it’s probably wise to stay away from those. If you go to a pharmacy, the process is no different than buying any other drug. You may have to wait around a while for your prescription to be filled. If you’re picking up sildenafil to use ASAP, the last thing you probably want to do is wait at a pharmacy. By ordering through Felix, you can have it discreetly delivered right to your door so you’re never without it when you need it most. You can get a prescription through Felix by setting up an online visit, or if you prefer, you can transfer your existing prescription to Felix for free.