What is Viagra? Sildenafil Citrate Uses, Dosage & Side Effects

Viagra, also known as sildenafil citrate. Men primarily use sildenafil to address sexual function issues. It is commonly known as impotence or erectile dysfunction (ED). By working together with sexual stimulation, it increases blood flow to the penis.

Key Takeaway

  • The main purpose of Viagra, also known as sildenafil citrate, is to treat problems with sexual function, particularly erectile dysfunction (ED).
  • Viagra can also treat pulmonary hypertension, which increases lung blood pressure, improving the quality of life for affected individuals.
  • Before using Viagra, it’s important to speak with a doctor, especially if you have underlying health issues or are on other medications.

It helps men achieve and sustain erections. Sildenafil does not protect against sexually transmitted diseases. It includes HIV, hepatitis B, gonorrhea, and syphilis. It is crucial to practice safe sex by utilizing latex condoms and other preventative measures. 

In this article, we will explore this medication’s uses, dosage, and side effects. If you are looking to buy Sildenafil in Canada, read on to explore it.

What is Viagra?

What is Viagra and how does it work

Viagra is a medication primarily used to treat erectile dysfunction (ED) in men. ED refers to the inability to achieve or maintain an erection during sexual activity. It contains sildenafil, a drug from a group of medications known as phosphodiesterase type 5 (PDE5) inhibitors. 

This drug helps treat various conditions by inhibiting PDE5. These drugs improve blood circulation to the penis, enabling a man to achieve and sustain an erection.

What is Viagra Used for?

Viagra is a medication used to address difficulties in achieving or maintaining erections. It works by increasing blood flow to the penis, aiding in achieving and sustaining an erection. Viagra has another application as well. It can treat pulmonary hypertension. 

Pulmonary hypertension is a condition with high blood pressure in lung vessels. Viagra plays a crucial role in improving the quality of life for men with erectile difficulties. It also helps individuals dealing with pulmonary hypertension.

Benefits of Sildenafil for ED

Sildenafil offers significant benefits for men experiencing erectile dysfunction (ED). By increasing blood flow to the penis during sexual stimulation, sildenafil helps to achieve and maintain an erection. 

Improved blood circulation can boost sexual performance. It also helps restore confidence in intimate relationships. Sildenafil is effective in treating pulmonary arterial hypertension (PAH). It relaxes the blood vessels in the lungs, making blood circulation easier. 

The ability of this medication to alleviate symptoms associated with ED and PAH is widely recognized. It provides relief and improves the overall quality of life for those affected.

How Does Viagra Work?

Viagra works by relaxing the muscle cells in the blood vessels that supply the penis. This relaxation allows for an increased blood flow, which is essential for achieving and maintaining an erection. 

In a natural setting, sexual stimulation triggers the need for enhanced blood circulation to the penis. Viagra helps restore impaired erectile function by facilitating this increased blood flow. Viagra improves blood circulation, aiding men with erectile dysfunction.

How Long Does Viagra Last

Viagra, a commonly prescribed medication for erectile dysfunction, typically lasts around four hours. It means that after taking a pill, you can expect its effects to be present for approximately four hours. 

During this time, you may notice better sexual performance. You may also find it easier to achieve and maintain an erection.

Sildenafil Vs Viagra – Are They Same?

Sildenafil Vs Viagra

Sildenafil and Viagra works the same way and are used to treat ED. When we talk about sildenafil vs. Viagra, we’re comparing the generic version with the brand name.

Both medications contain the active ingredient sildenafil citrate, which means they work precisely the same way. This substance relaxes certain muscle cells in the penis’ erectile tissue, enabling blood pressure to rise to that location. Viagra and Viagra Connect are brand names for sildenafil.

Sildenafil is sometimes used to treat a disease known as pulmonary arterial hypertension (PAH). (PAH causes excessive blood pressure within the lungs.) However, Viagra is not licenced for the treatment of this problem.

How to Take Sildenafil Citrate?

To take Sildenafil Citrate, swallow the tablets whole with water or juice. It’s essential to avoid grapefruit juice. Just gulp it down with a glass of your preferred beverage. That’s it!

Tell your doctor or pharmacist if you are having trouble swallowing Viagra tablets.

Safe Doses of Viagra

The standard dose for Viagra is 50 milligrams (mg) as a single dose, to be taken no more than once a day. It is best to take Viagra approximately 1 hour before engaging in sexual intercourse. 

However, it is worth noting that Viagra is available in different dosages, including 5 mg, 10 mg, 20 mg, 30 mg, and 40 mg. A healthcare professional may prescribe lower doses. They consider individual needs and medical conditions.

How Can I Make Viagra Work Faster and Longer?

Take Viagra on an empty stomach. Avoid eating a heavy meal before taking it, as it can slow down the absorption of the medication into your bloodstream. Taking it separately from meals can help it kick in quicker.

Additionally, stay hydrated and avoid alcohol, as it can interfere with the effectiveness of the medication.

Viagra for Women

Viagra for Women

The FDA approved a new daily pill called flibanserin, or Addyi. It was first created as an antidepressant. This medication is now recognized as a treatment for premenopausal women who experience low sexual desire. 

Addyi can potentially enhance sex drive in women who find their lack of desire distressing. It provides hope and a potential solution for those facing this challenge.


If you suspect someone has overdosed on Viagra, call 911 immediately. Look for severe symptoms like fainting or difficulty breathing. Immediate action is vital to ensure their safety. If the symptoms are not life-threatening but still about, it’s essential to contact a poison control center right away. 

But, their immediate attention should be sought even if the symptoms are not life-threatening. Symptoms of a Viagra overdose may include severe dizziness, fainting, and a prolonged, painful erection. 

In such cases, it is crucial to seek prompt medical attention to ensure the person’s well-being and safety.

Side effects of Sildenafil 

There are two types of Side effects, including here:

Mild Side Effects

There are six mild side effects that users may experience. These side effects are usually temporary and not too severe: 

  • Headaches
  • Flushing (redness in the face) 
  • Indigestion
  • Nasal congestion
  • Dizziness 
  • Changes in vision

Serious Side Effects

Six common serious side effects include:

  • Headache
  • Heartburn
  • Diarrhea
  • Nausea
  • Tingling in your arms
  • Pain in muscles


It is essential to avoid mixing sildenafil with any other medication or device that induces erections. This precaution is of utmost importance. It is necessary to understand that sildenafil enhances blood flow to the penis, facilitating an erection. 

Using it with other medications or devices intended for the same purpose can cause a significant rise in blood circulation. It can result in severe health complications that need to be taken seriously.

Before using Viagra, it is crucial to ensure its safety for you. Inform your doctor about any history of heart disease or heart rhythm problems, including chest pain, coronary artery disease, heart attack, stroke, or congestive heart failure.

Additionally, disclose if you have experienced high or low blood pressure, liver or kidney disease, a blood cell disorder like sickle cell anemia, multiple myeloma, or leukemia, a bleeding disorder such as hemophilia, a stomach ulcer, retinitis pigmentosa (an inherited eye condition), or a physical deformity of the penis like Peyronie’s disease.

Please note that if you have low blood pressure or are currently being treated for high blood pressure or pulmonary arterial hypertension, special caution is required when using Viagra.

The appropriate Viagra dosage and potential interactions with other medications should be carefully evaluated by your doctor, particularly if you are already taking other recreational drugs or other medications.

Additionally, if you have previously had a mild allergic reaction or experience chest pain after taking Viagra tablets, it is crucial to seek medical attention and inform your healthcare provider.

Sildenafil Interactions With Other Medications

Sildenafil Interactions With Other Medications

Sildenafil can interact with nitrate medications, such as those used for chest pain, as it can cause a dangerous drop in blood pressure. It is also essential to avoid taking sildenafil with alpha-blockers, as this combination can lead to low blood pressure.

Who Should Not Take Viagra?

Individuals with severe heart or liver problems should avoid taking Viagra. It includes individuals who have recently had a stroke. It also includes those who have experienced a heart attack or other heart-related issues. 

Viagra enhances blood flow but can strain the heart and pose risks for people with pre-existing heart conditions.

What Are the Alternatives of Viagra?

If you’re looking for alternatives to Viagra, Tadalafil, and Vardenafil are worth considering. These affordable ED pills work like popular branded treatments such as Viagra, Cialis, and Levitra. They are practical and affordable alternatives for treating erectile dysfunction. 

Revatio, an alternative brand of sildenafil, is prescribed to address pulmonary arterial hypertension (high blood pressure in the blood vessels that supply the lungs)) and enhance exercise capacity in both men and women.

On the other hand, both Viagra and Cialis have been approved for the treatment of erectile dysfunction (ED) in males aged 18 years and older. These medications are not only utilized to treat erectile dysfunction but can also be employed to address treat high blood pressure concerns.

The main advantage of Tadalafil and Vardenafil is their lower cost compared to the branded options. Unlike Viagra they are cheap and can be bought as over the counter medicines. For example, you can buy Tadalafil online in Canada at a reasonable price.

Is Viagra (Sildenafil) Better Than Cialis(Tadalafil)

Is Viagra (Sildenafil) Better Than Cialis(Tadalafil)

Viagra and Cialis belong to a class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors. They work by increasing blood circulation to the penis, resulting in improved erections. 

However, no studies directly compare Viagra and Cialis, so it is difficult to determine if one is superior to the other. Both medications have shown equal effectiveness in clinical trials. The selection between them may vary based on personal preferences and treatment responses. 

When comparing Viagra vs. Cialis, it’s essential to consult a healthcare professional. They can help you decide which option is best for your needs.

Viagra Cost

Sildenafil is available at prices ranging from $40 for eight tablets to $130 for 100 tablets. Buying a larger quantity is wise to save money, as it provides better value. It differs from the regular Pfizer-made Viagra, which can cost around $170 for just eight tablets in Canada.

Sildenafil (Viagra) Over the Counter in Canada

In Canada, Sildenafil, commonly known as Viagra, is unavailable as over the counter medicines to treat erectile dysfunction. It means that you will always need a prescription from a doctor before you can obtain this medication. If you have symptoms of ED, consult a doctor before considering Sildenafil to ensure it’s suitable for you. 

It’s essential to seek medical advice for proper guidance and assessment. They will review your medical history and talk about possible side effects. They’ll make sure Sildenafil is safe and suitable for you.

Faqs About Viagra

What Distinguishes Viagra From Other Ed Medications for treating ED

What Distinguishes Viagra From Other Ed Medications Now on the Market?

Viagra holds the distinction of being the first FDA-approved oral medication for erectile dysfunction (ED). It established a benchmark for efficacy, safety, and market recognition.

What is Natural Viagra Food?

Natural Viagra foods include watermelon, pomegranate, dark chocolate, celery, paprika, spinach, garlic, and walnuts.

How Long Does Viagra Last?

Viagra lasts for about four hours.

What Should I Talk to My Doctor About When Considering Whether Viagra is Right for Me?

When you meet your doctor, discuss your medical history and current medications. Also, mention any underlying conditions that could impact its suitability or cause side effects.

How to Tell if a Man is Taking Viagra?

There are three ways to find out if a man is taking Viagra. First, check his medicine cabinet. Second, email his doctor and request a list of prescription drugs. Lastly, have his blood tested.

Can Women Take Viagra?

Studies have shown that Viagra may help women with difficulty in sexual arousal. It enhances their response to sexual stimulation.

Can Sildenafil Be Used With Other Treatments for Impotence?

Patients should not use sildenafil with other impotence treatments. It can cause serious side effects, particularly in patients with heart problems.

How Long Does Viagra Stay in Your System?

Viagra can stay in the system for up to 20 hours, but it takes about four to five half-lives to eliminate a drug.

Will I Need to Use Viagra Long Term?

The need for long-term use of Viagra varies based on individual circumstances. It is essential to have a discussion with a doctor about potential long-term severe side effects.

What Other Drugs Will Affect Viagra Effectiveness?

Nitrates, alpha-blockers, high blood pressure and low blood pressure medications can affect Viagra’s effectiveness. Alcohol and drugs that affect liver proteins may also have an impact. Additionally, grapefruit juice can influence the effectiveness of Viagra.

Will Viagra Help Me Keep an Erection After Ejaculating?

Viagra assists in sustaining an erection post-ejaculation. It also shortens the time needed to achieve a second erection.

Does Sildenafil Increase the Size of a Man’s Penis?

Sildenafil (Viagra) does not increase the size of a man’s penis; no pill can achieve that effect.

Final Thoughts on Viagra Uses, Dosage & Side Effects

Viagra, also known as Sildenafil Citrate, is a widely used medication for treating erectile dysfunction in men. It has proven to be highly effective in enhancing sexual performance and restoring confidence in the bedroom. However, following the recommended dosage and consulting a healthcare professional before use is crucial.

The benefits of Viagra are undeniable. It provides a reliable solution for those struggling with erectile dysfunction. Improving blood flow to the penis helps men achieve and maintain firm erections, leading to a satisfying sexual experience. It can potentially revitalize relationships and enhance the overall quality of life.

To avoid potential side effects, it is vital to take Viagra as a doctor prescribes and adhere to the recommended dosage. It is essential to disclose any underlying health conditions or medications being taken to ensure safe usage. 

Understanding the potential side effects is necessary. Some common ones include headaches, flushing, and indigestion. This knowledge helps manage expectations and address concerns.

Using Viagra responsibly and under medical guidance can provide individuals with remarkable benefits. It also helps to minimize the risk of adverse effects. Remember to have open communication with healthcare professionals. It is vital to ensure a safe and positive experience with Viagra.

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