How Sildenafil Works to Treat Erectile Dysfunction

If you prefer a longer-lasting medication with the option for daily use, Cialis may be a better fit. If you want a shorter-acting medication taken only when needed, Viagra might be more suitable.

Brand Name	Manufacturer	Dosage Forms	Price Range (CAD)
Viagra	Pfizer	Tablets 25 mg, 50 mg, 100 mg	20–60 per tablet
Sildenafil Accord	Accord Healthcare	Tablets 50 mg	15–45 per tablet
Sildenafil Sandoz	Sandoz	Tablets 20 mg, 50 mg	18–50 per tablet
Kamagra	Ajanta Pharma (imported)	Tablets 100 mg	Varies, often unlicensed

Consult a healthcare professional to determine the best option for you.

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This pharmacy is duly licensed in the province of British Columbia, Canada by the College of Pharmacists of BC. If you have any questions or concerns you can contact the college at: 200-1765 West 8th Ave Vancouver, BC V6J 5C6 Canada. Disclaimer: This article is for informational purposes only and does not constitute medical advice. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition.

Product Reviews

A summary of Sildenafil’s pharmaceutical identity and competing brands in Canada. Sildenafil is the active ingredient in Canadian brands Viagra® and Revatio®. Viagra® is widely recognized for its role as a PDE5 inhibitor. Revatio® contains the same active component but is marketed for different dosing and indications. Other Canadian brands with the same active ingredient may be available as generics, offering similar pharmaceutical effects.

Pulmonary hypertension

Available Sildenafil formats in Canada for patient use. In Canada, Sildenafil is available sildenafil pink pill in oral tablet form. Tablets typically come in strengths such as 25 mg, 50 mg, and 100 mg. These tablets are designed for oral administration and are intended to be swallowed whole. Key safety tips for taking Sildenafil properly. Want to read more about this section?

Product	Dosage	Quantity + Bonus	Price
Viagra Generic	150mg	30 + 2 Pills	72.32€ 68.88€	Buy
Viagra Generic	150mg	360 + 10 Pills	423.48€ 403.31€	Buy
Viagra Generic	100mg	30 + 4 Pills	60.91€ 58.01€	Buy
Viagra Generic	200mg	120 + 8 Pills	204.80€ 195.05€	Buy
Kamagra	100mg	84 + 6 Pills	264.44€ 251.85€	Buy
Kamagra	100mg	120 + 6 Pills	330.74€ 314.99€	Buy
Viagra Generic	200mg	270 + 10 Pills	379.76€ 361.68€	Buy
Viagra Generic	50mg	360 + 10 Pills	225.33€ 214.60€	Buy
Kamagra Polo	100mg	32 Pills	125.88€ 119.89€	Buy
Viagra Generic	25mg	180 + 6 Pills	154.93€ 147.55€	Buy

Valuable information and resources are available with your Sildenafil DIN.

Your First Appointment

Sildenafil works for 4 hours sildenafil citrate 100 mg after taking it. Sildenafil works by relaxing muscles and promoting blood flow in the body, particularly to the penis. This can lead to an erection when sexually stimulated. Sildenafil is used to treat erectile dysfunction (ED), which is the inability to get or keep an erection firm enough for sexual activity. Take sildenafil about 30 to 60 minutes before sexual activity, as needed. The drug identification number (DIN) is easy to find.

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Sildenafil tablets should be taken exactly as prescribed by a healthcare professional. It is important not to exceed the recommended dose. Taking it with or without food is acceptable, but high-fat meals may delay absorption. Always consult a doctor before starting or changing dosage. How Sildenafil works at the biological level to affect blood flow.

Raynaud's phenomenon

Sildenafil blocks the enzyme phosphodiesterase type 5 (PDE5), which leads to increased levels of cyclic guanosine monophosphate (cGMP). This causes relaxation of smooth muscle in blood vessels, allowing improved blood flow. This mechanism is central to how Sildenafil functions pharmacologically. Common and serious reactions reported with Sildenafil use. Common side effects include headache, flushing, indigestion, nasal congestion, and dizziness.

Licensed practitioner consultation

Serious side effects are rare but can include sudden vision changes, prolonged erections, or severe allergic reactions. Any unexpected symptoms should prompt immediate medical attention. Health Canada warnings and precautions for Sildenafil users. Health Canada advises caution when using Sildenafil in patients with cardiovascular conditions, low blood pressure, or those taking nitrates. It is contraindicated with nitrate medications due to risk of severe hypotension. It’ll be printed on your packaging and the receipt from your pharmacist.

• PDE5 inhibitors like sildenafil can lower blood pressure.
• This effect is increased when combined with nitrates or alpha-blockers.
• Blood pressure should be monitored, especially when starting treatment.
• Patients with heart conditions need careful evaluation before use.
• Sexual activity itself poses a cardiac risk for some individuals.
• A doctor may recommend stress testing for at-risk patients.
• Report any fainting or severe dizziness to a doctor immediately.

Health Canada regulations require us to confirm your patient status to access more Sildenafil information.

Status	Description	Legal Regulations
Prescription-Only	Must be prescribed by a licensed doctor	Controlled drug under Health Canada
OTC Availability	Not available over-the-counter in Canada	Requires medical consultation
Import Regulations	Personal import allowed with prescription	Customs may scrutinize unapproved imports
Patent Status	Patent expired in Canada (~2013)	Generic versions available

These stories are real, but your experience may differ.

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Chat with a licensed practitioner online to assess if Sildenafil is right for you. If approved, receive a tailored Sildenafil prescription with clear usage instructions. Pharmacy delivers Sildenafil at your doorstep in plain packaging. Sildenafil is a medication used to treat erectile dysfunction. Sildenafil comes in 25 mg, 50 mg or 100 mg strengths. Sildenafil is not available over-the-counter in Canada, so you’ll need a prescription to be able to access this medication.

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• Alpha-Blockers (used for high blood pressure or enlarged prostate, e.g., prazosin, doxazosin, tamsulosin): This combination can increase the risk of low blood pressure (hypotension), dizziness, or fainting. Sildenafil should typically be initiated at a low dose after stable alpha-blocker therapy is established. • Antifungals (e.g., ketoconazole, itraconazole): These medications inhibit the enzyme that breaks down sildenafil, leading to increased drug concentration in the body and a higher risk of side effects. • Blood Pressure Medications (other classes, e.g., ACE inhibitors, ARBs, Calcium Channel Blockers): Sildenafil's effect of widening blood vessels may be additive with these drugs, potentially causing a greater drop in blood pressure. • CYP3A4 Inhibitors (e.g., the antibiotic erythromycin, the HIV medication ritonavir): These potent enzyme inhibitors slow the metabolism of sildenafil, raising its levels in the bloodstream and increasing the risk and severity of side effects.

Common Side Effects

A lower dose of sildenafil is often required. • Grapefruit Juice: This beverage can inhibit the enzyme that processes sildenafil, increasing the drug's concentration in the body and raising the risk of side effects. It is generally advised to avoid or limit consumption. • Nitrates (e.g., nitroglycerin, isosorbide dinitrate, or isosorbide mononitrate, including street drugs known as "poppers"): This combination is strictly contraindicated (must never be used) because it can cause a severe, life-threatening drop in blood pressure. • Other PDE5 Inhibitors (e.g., tadalafil, vardenafil, avanafil): Combining these medications can dangerously amplify their effects, leading to a higher risk of severe side effects like profound low blood pressure and prolonged erection (priapism).

Regional issues

• Soluble Guanylate Cyclase (sGC) Stimulators (e.g., riociguat): This combination is strictly contraindicated (must never be used) as it can lead to a dangerously severe drop in blood pressure. The information on this page is sourced from independent third parties contracted by CanadaPharmacyOnline. While we cannot guarantee its medical accuracy, we strongly recommend consulting a healthcare professional for personalized advice regarding medications or medical conditions. Prescriptions Dispensed from Canada are Dispensed by Candrug Pharmacy #18985. 202A 8322-130th Street, Surrey, British Columbia, Canada V3W 8J9, 604-543-8711. If you’ve been trying to figure out how to order Sildenafil online in Canada, your best bet is to start by talking to a healthcare practitioner at Jack Health. Complete an online consult, our medical team will review your consult and they’ll discuss whether Sildenafil treatments are the right solution for you, based on your history and lifestyle Jack Health will personalized a Cialis treatment plan for you. With Jack Health, you can complete a secure online medical assessment, which is reviewed by a licensed Canadian healthcare provider. If Sildenafil is appropriate based on your health history and lifestyle, a prescription may be issued and a personalized treatment delivered discreetly to your door.

• Sildenafil's primary function is to improve blood flow for erectile issues.
• In Canada, obtaining sildenafil requires a valid prescription from a licensed doctor.
• Online pharmacies in Canada often offer sildenafil but with caution advised.
• Canadian doctors consider patient health history before prescribing sildenafil.
• Sildenafil's adverse effects include headaches, flushing, and dizziness.

No — with Jack Health, you don’t need to book a formal in‑office appointment. Just complete a confidential online consult at your convenience.

• Unauthorized online sellers may supply counterfeit or substandard pills.
• Counterfeit drugs can contain incorrect doses or harmful substances.
• Signs of rogue websites include prices that seem too good to be true.
• They may spam email inboxes with unsolicited medication offers.
• Legitimate pharmacies do not sell prescription drugs without a prescription.
• Purchasing from unverified sources poses significant health risks.
• Health Canada maintains a list of licensed online pharmacies.

A licensed Canadian healthcare provider will review your health history and symptoms.

Medical Condition	Description	Typical Dosage	Approved Age Range
Erectile Dysfunction	Improves blood flow for erections	50 mg	18+
Pulmonary Arterial Hypertension	Lowers blood pressure in lungs	20 mg, 40 mg	18+
Raynaud's Phenomenon	Treats blood vessel spasms	Under study	18+
Altitude Sickness	Off-label use for high altitude	Off-label	Adults only

Our partner pharmacy can have Sildenafil shipped out to you at no additional cost.

Buy Sildenafil in 3 Steps

It can be taken with or without food, but if taken with a high-fat meal, it may take longer to start working. Some side effects of sildenafil may include headache, flushing, upset stomach, muscle aches or dizziness. Rare side effects of sildenafil are diarrhea, dizziness and rash. You should avoid taking sildenafil if you are allergic to any ingredient in the tablet, use medications called nitrates (often used for chest pain), take a medication called riociguat, or have had a prior episode of non-arteritic anterior ischemic optic neuropathy (NAION). The best choice between Viagra and Cialis depends on personal preferences. You can purchase Sildenafil online with a prescription from a licensed healthcare practitioner, like Jack Health. Yes — Sildenafil (active ingredient in viagra) is a prescription-only medication in Canada, and Jack Health ensures full compliance with Canadian regulations.

Privacy Practices

Always disclose your full medical history to your doctor before use. Substances to avoid or monitor while on Sildenafil. Sildenafil may interact with nitrate medications, alpha-blockers, and certain antifungal or antibiotic drugs. These interactions can affect blood pressure or drug levels, so inform your healthcare provider of all medications and supplements you are taking. How to keep Sildenafil tablets safe and effective.

Low blood pressure

Store Sildenafil tablets at room temperature, between 15°C and 30°C, away from moisture and direct light. Do not use tablets past the expiration date indicated on the packaging. 1• Sildenafil is a PDE5 inhibitor available in Canada as Viagra® and Revatio®. 2• It works by relaxing blood vessels to improve blood flow. 3• Available in oral tablets in sildenafil products over the counter 25 mg, 50 mg, and 100 mg strengths.

Prepare For Your Visit

4• Common side effects include headache and flushing; serious effects are rare. 5• Not to be combined with nitrates or certain other drugs. 7• Store at room temperature, away from moisture and light. Through Jack Health, you can get clinician-prescribed ED treatments—like Sildenafil—delivered discreetly to your door, with licensed Canadian healthcare providers overseeing your care Dosage: 25mg, 50mg, or 100mg tablets / pills * A prescription will only be written if deemed appropriate after digital consultation with a licensed medical provider. Connect with a licensed practitioner in minutes and get your Sildenafil prescription approved and delivered - no clinic visits, no waiting rooms.