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.
Overview
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.
Available Sildenafil formats in Canada for patient use.
In Canada, Sildenafil 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. 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
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. This mechanism is central to how Sildenafil functions pharmacologically.
Dosage Instructions of Sildenafil
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.
Side Effects of Sildenafil
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.
Important Safety Information About Sildenafil
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.
Drug Interactions
How to keep Sildenafil tablets safe and effective.
Store Sildenafil tablets at room temperature, between 15°C and 30°C, away from moisture and direct light. Keep out of reach of children. Do not use tablets past the expiration date indicated on the packaging.
Brands & DIN Number of Sildenafil
Brand Names
- Viagra®
- Revatio®
DIN (Drug Identification Numbers)
02234567
Key Takeaways
- 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 25 mg, 50 mg, and 100 mg strengths.
- 4• Common side effects include headache and flushing; serious effects are rare.
- 5• Not to be combined with nitrates or certain other drugs.
- 6• Requires a prescription in Canada.
- 7• Store at room temperature, away from moisture and light.