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. Always disclose your full medical history to your doctor before use.
• Flushing (redness or warming of the face, neck, or chest) • Vision changes, which can include seeing a slight blue tinge to objects, blurred vision, or increased light sensitivity • Hypotension (low blood pressure), which may cause light-headedness or fainting Serious or rare side effects: These are rare but potentially severe side effects. Seek immediate medical attention or call emergency services if you experience any of the following: • A sudden decrease or loss of hearing, sometimes with ringing in the ears and dizziness. • A sudden decrease or loss of vision in one or both eyes. • Chest pain or other symptoms of a heart attack (like pain spreading to the jaw or shoulder) or stroke, especially during sexual activity. • Priapism: An erection that is painful or lasts for more than four hours.
This can cause permanent damage to the penis if not treated right away. • Temporary decreased blood flow to parts of the brain (transient ischemic attack) • Severe Allergic Reaction: Symptoms like swelling of the face, lips, tongue, or throat, or trouble breathing. Viagra should not be used under the following conditions: • A known hypersensitivity or allergic reaction to sildenafil or any of its ingredients. • The risk of severe, life-threatening hypotension (dangerously low blood pressure). o Nitrates (e.g., nitroglycerin, isosorbide dinitrate, or isosorbide mononitrate) include: Recreational drugs known as "poppers" (alkyl nitrites). 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.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Viagra Generic | 100mg | 360 + 10 Pills | 330.21€ 314.49€ | |
| Viagra Generic | 150mg | 90 + 6 Pills | 147.18€ 140.17€ | |
| Kamagra Polo | 100mg | 272 + 12 Pills | 622.94€ 593.28€ | |
| Kamagra Polo | 100mg | 180 + 8 Pills | 446.52€ 425.26€ | |
| Kamagra Polo | 100mg | 12 Pills | 60.21€ 57.34€ | |
| Kamagra | 100mg | 180 + 6 Pills | 436.79€ 415.99€ | |
| Viagra Generic | 200mg | 10 Pills | 40.96€ 39.01€ | |
| Kamagra Soft Tabs | 100mg | 180 + 8 Pills | 425.45€ 405.19€ | |
| Viagra Generic | 100mg | 90 + 6 Pills | 129.02€ 122.88€ | |
| Viagra Generic | 25mg | 60 + 4 Pills | 71.99€ 68.56€ | |
| Viagra Generic | 50mg | 360 + 10 Pills | 225.33€ 214.60€ | |
| Viagra Generic | 150mg | 20 Pills | 55.02€ 52.40€ | |
| Kamagra Polo | 100mg | 84 + 4 Pills | 244.49€ 232.85€ | |
| Viagra Generic | 200mg | 60 + 4 Pills | 125.19€ 119.23€ |
How to keep Sildenafil tablets safe and effective.
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. 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. A summary of Sildenafil’s pharmaceutical identity and competing brands in Canada. Sildenafil is the active ingredient in Canadian brands Viagra® and Revatio®. Store Sildenafil tablets at room temperature, between 15°C and 30°C, away from moisture and direct light.
• 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. 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). • 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. 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®.
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. Available Sildenafil formats in Canada for patient use. In Canada, Sildenafil sildenafil citrate tablets 200mg is available 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. Sildenafil tablets should be taken exactly as prescribed by a healthcare professional. It is important not to exceed the recommended dose. 2• It works by relaxing blood vessels to improve blood flow.
| Common Side Effects | Less Common Side Effects | Serious Side Effects |
|---|---|---|
| Headache | Flushing | Sudden vision loss |
| Dyspepsia (Indigestion) | Nasal congestion | Priapism (prolonged erection) |
| Dizziness | Muscle pain | Allergic reactions |
| Blurred vision | Gastrointestinal disturbances | Heart attack (rare) |
3• Available in oral tablets in 25 mg, 50 mg, and 100 mg strengths. 4• Common side effects include headache and flushing; serious effects are rare.
| Drug Class | Common Drugs | Effect | Notes |
|---|---|---|---|
| Nitrates | Nitroglycerin | Severe hypotension | Contraindicated |
| Alpha-blockers | Tamsulosin, Doxazosin | Increased hypotensive effect | Use with caution, start at lowest dose |
| CYP3A4 inhibitors | Ketoconazole, Itraconazole | Increased sildenafil levels | May increase side effect risk |
| Other ED medications | Tadalafil, Vardenafil | Enhanced effect | Risk of hypotension |
5• Not to be combined with nitrates or certain other drugs.
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. 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. 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.
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Sildenafil is a medication used to treat erectile dysfunction. Sildenafil comes in 25 mg, 50 mg or 100 mg strengths. Sildenafil works for 4 hours after taking it.
Sildenafil works by relaxing muscles and promoting blood flow in the body, particularly to the penis.
Tell your doctor about your medical conditions, past and present, before starting Viagra. This is crucial because certain conditions can affect whether Viagra is right for you. These conditions may include, but are not limited to: • Anatomical deformity of the penis (such as angulation, cavernosal fibrosis, or Peyronie's disease), as this increases the risk of a prolonged erection (priapism). • Any medical conditions that predispose you to priapism, such as leukemia, multiple myeloma, or sickle cell anemia. • Bleeding disorders or an active peptic ulcer.
• Cardiovascular disease, including a history of stroke, heart attack, life-threatening irregular heartbeat, or severe heart failure within the last six months • Certain severe eye conditions, such as non-arteritic anterior ischemic optic neuropathy (NAION) or retinitis pigmentosa. • High or low blood pressure that is uncontrolled. Provide your doctor with a complete list of all your medications, including prescriptions, over-the-counter drugs, vitamins, and herbal supplements. • 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. This can lead to an erection when sexually stimulated.
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. 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. 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. 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.