Consulting a Doctor Online for Sildenafil in Canada
Archived from the original on 11 January 2015. ^ "Pfizer Completes Transaction to Combine Its Upjohn Business with Mylan".
| 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 |
Retrieved 17 June 2024 – via Business Wire.
Do you need a prescription to buy viagra in canada
"Pfizer to lose patent of drug Viagra, Indian companies gear up with copycat versions: Pfizer's patent for the formulation of Viagra, used to treat impotence in men, ends in the US in 2020". Archived from the original on 17 April 2021. ^ "Set to sildenafil 25 mg tablets conquer US, Indian 'Viagras' may give Pfizer a hard Time". Archived from the original on 22 December 2020. ^ a b "Pfizer Settles Viagra® Patent Litigation With Teva".
About Viagra
"Lockout Supplements Issues Voluntary Nationwide Recall of Boner Bears Chocolate Syrup Due to Undeclared Sildenafil". Archived from the original on 19 November 2016. "Counterfeit Viagra, Cialis, Levitra: The Ultimate Guide". Archived from the original on 10 January 2017. "Online pharmacies suspected of counterfeit drug sales". Archived from the original on 17 June 2024. "Viagra patent expires in June, says Brazilian court". Archived from the original on 17 April 2012. ^ "Revatio patent ruled invalid for lack of sound prediction and obviousness". Archived from the original on 3 March 2016. {{cite web}}: CS1 maint: deprecated archival service (link) ^ Teva Canada Ltd. v. Pfizer Canada Inc., 2012 SCC 60 at par. "Supreme Court ruling could lead to cheaper versions of Viagra". Archived from the original on 10 March 2013. "Canadian Supreme court rules Viagra patent invalid". Archived from the original on 11 November 2012. ^ "Viagra patent tossed out by Supreme Court: Decision allows generic versions of drug to be produced". Archived from the original on 18 September 2013. ^ "Pfizer Canada drops Viagra price sildenafil 20 mg prescription after generic versions get Supreme Court green light".
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Viagra Generic | 100mg | 180 + 8 Pills | 199.37€ 189.88€ | |
| Viagra Generic | 25mg | 180 + 6 Pills | 154.93€ 147.55€ | |
| Kamagra | 100mg | 12 Pills | 55.64€ 52.99€ | |
| Viagra Generic | 150mg | 90 + 6 Pills | 147.18€ 140.17€ | |
| Viagra Generic | 25mg | 10 Pills | 25.19€ 23.99€ | |
| Kamagra Polo | 100mg | 180 + 8 Pills | 446.52€ 425.26€ | |
| Viagra Generic | 25mg | 60 + 4 Pills | 71.99€ 68.56€ | |
| Viagra Generic | 200mg | 120 + 8 Pills | 204.80€ 195.05€ | |
| Viagra Generic | 150mg | 360 + 10 Pills | 423.48€ 403.31€ | |
| Kamagra Soft Tabs | 100mg | 32 Pills | 120.11€ 114.39€ | |
| Viagra Generic | 50mg | 270 + 8 Pills | 198.48€ 189.03€ | |
| Viagra Generic | 150mg | 270 + 10 Pills | 326.61€ 311.06€ |
Archived from the original on 30 November 2012.
Mechanism of action
"Drug repositioning: identifying and developing new uses for existing drugs". Archived from the original on 22 April 2019. Archived from the original on 10 June 2019. "Health situation in former communist bloc is dire, says Unicef". Archived from the original on 1 November 2012.
Altitude sickness
^ Gurevich M, Cormier N, Leedham U, Brown-Bowers A (August 2018). Sexuopharmaceutical use by men as prevention and proficiency". "Spreading the Word, but What Word is That? Viagra and Male Sexuality in Popular Culture". "A new view of women's sexual problems: Why new? Archived from the original on 27 December 2013. "In rare move, Pfizer asks Supreme Court to reconsider ruling that killed Viagra patent". Archived from the original on 5 February 2013. "The Supreme Court of Canada holds Pfizer's Viagra patent invalid". Archived from the original on 20 May 2013. ^ "Actavis Launches Generic Viagra in Europe as Patents Expire". Archived from the original on 29 October 2013. "What Will Happen When Viagra Goes Generic?". Archived from the original on 23 April 2011. ^ "Is Viagra about to lose its pulling power in the UK?".
What are common side effects of Sildenafil?
Archived from the original on 26 March 2021. Archived from the original on 8 December 2013. "The coming generics threat to Pfizer's Viagra brand just got scarier". Archived from the original on 9 September 2017. ^ "Viagra to go generic in 2017 according to Pfizer agreement".
Pregnancy and breastfeeding
Archived from the original on 1 December 2017. "Sex, Drugs and That Little Blue Pill". Archived from the original on 6 December 2017. "Why Pfizer Is About to Slash Viagra's Price in Half". Archived from the original on 7 December 2017. Archived from the original on 30 October 2013. Archived from the original on 22 August 2009. Archived from the original on 25 June 2007. "Viagra from the pharmacist: insight from reclassification in New Zealand". Archived from the original on 17 May 2021. ^ "Generic Viagra developers queue up, but may have to wait". Archived from the original on 28 December 2021. ^ "Approved Viagra copies flood drugstores in Korea".
What are common side effects of Viagra?
Archived from the original on 3 January 2009. Archived from the original on 12 October 2008. "Sales of Impotence Drugs Fall, Defying Expectations". Archived from the original on 11 October 2007. ^ "Pfizer Courting More Controversy with Viagra 'Advergaming'".
Jet lag research
Archived from the original on 19 December 2019. Archived from the original on 6 May 2018. Archived from the original on 9 January 2009. Archived from the original on 22 February 2021. ^ a b "Viagra now available over the counter without prescription in the UK". ^ "Viagra prescriptions almost triple in a decade". Archived from the original on 1 July 2024. ^ "MHRA reclassifies Viagra Connect tablets to a Pharmacy medicine". ^ "Viagra to be available without prescription in UK". This section identifies the active ingredient in Viagra® and lists comparable pharmaceutical brands available in Canada. Viagra® is a brand-name medication containing the active ingredient sildenafil.
Chemical synthesis
Customs and Border Protection". Archived from the original on 12 October 2013. "Yes, There Is a Way to Get Generic Viagra". Archived from the original on 2 May 2016. "Pfizer Wins Viagra Patent Infringement Case Against Teva Pharmaceuticals". In the Canadian pharmaceutical landscape, it belongs to a class of drugs that manage blood flow through specific enzymatic pathways.
- Sildenafil is not approved for use by women.
- Limited research exists on its effects for female sexual dysfunction.
- It is sometimes used off-label for certain female conditions under strict supervision.
- Self-medication by women is strongly discouraged due to unknown risks.
- Pregnant or breastfeeding women should not use sildenafil.
- Female-specific sexual health concerns should be addressed with a doctor.
- Safe and effective treatments for women are an area of ongoing study.
Other competing Canadian brands that utilize similar pharmacological mechanisms include Cialis® (tadalafil), Levitra® (vardenafil), and Staxyn® (vardenafil). Another sildenafil-based brand, Revatio®, is also available but is often dispensed in different strengths for distinct clinical purposes. In Canada, this medication is primarily available as oral tablets in three standardized strengths. Viagra® is produced as women sildenafil blue, film-coated, diamond-shaped tablets.
Product 5. Sildenafil by Dr. Reddy’s, UK
^ "Erectile Dysfunction Medication the Most Seized Drug During Global Crackdown, Interpol Says". ^ "Global illicit medicines targeted by INTERPOL operation". Archived from the original on 10 December 2023. ^ "Israeli-made AI exposes international fake Viagra network". ^ "Counterfeit Viagra Pills, Footwear, Belts, Car Emblems and Headphones Worth over $32 Million Seized at the LA/Long Beach Seaport U.S. The available formats in Canadian pharmacies include: Viagra® works by protecting specific molecules that allow smooth muscles to relax and increase blood flow. At a biological level, sildenafil is a selective inhibitor of the PDE5 enzyme. Under normal conditions, this enzyme breaks down a substance called cyclic guanosine monophosphate (cGMP). By blocking PDE5, Viagra® allows cGMP levels to remain elevated. This leads to the relaxation of smooth muscles in the walls of blood vessels, which facilitates increased blood flow to specific areas of the body. Usage involves oral administration according to strict timing and safety guidelines provided by a healthcare professional. Viagra® is taken orally, generally with or without food. Because its absorption can be delayed by high-fat meals, timing is an essential pharmaceutical consideration. It is typically administered as a single dose when needed, and it is strictly recommended that users do not exceed one dose within a 24-hour period. Dosage adjustments are made based on individual physiological responses and safety profiles. Proper storage ensures the chemical stability and shelf-life of the sildenafil citrate compound. Temperature: Store at room temperature between 15°C and 30°C. Environment: Keep the tablets in a dry place away from moisture (avoid bathroom cabinets). Safety: Ensure the medication is kept in its original packaging and out of reach of children. Users may experience common physiological shifts or rare, more serious reactions requiring immediate clinical attention. Abnormal vision (such as a blue color tinge or blurred vision) Priapism: A prolonged and potentially painful physiological reaction lasting over four hours. Sudden Vision Loss: Rare reports of decreased or loss of vision in one or both eyes. Sudden Hearing Decrease: Sudden decrease or loss of hearing, sometimes accompanied by dizziness. Health Canada emphasizes strict precautions regarding cardiovascular health and specific pre-existing medical conditions. Before using Viagra®, it is vital to have a cardiovascular screening. The medication can cause a temporary decrease in blood pressure. It is not recommended for individuals with severe heart or liver problems, or those who have recently had a stroke or heart attack. Health Canada also warns that anyone with a history of non-arteritic anterior ischemic optic neuropathy (NAION) should exercise extreme caution. Certain substances, particularly those affecting blood pressure or liver enzymes, can cause dangerous interactions.
- Sildenafil works by relaxing blood vessels in the penis.
- This increases blood flow, aiding in achieving and maintaining an erection.
- The mechanism is similar for pulmonary hypertension in the lungs.
- It inhibits the PDE5 enzyme, which regulates blood flow.
- Effects can last for up to four to five hours.
- It does not cause automatic erections; sexual arousal is necessary.
- Tolerance or dependence on the drug is not typically reported.
The most critical contraindication for Viagra® is the use of nitrates (often prescribed for chest pain), as the combination can lead to a sudden, life-threatening drop in blood pressure. Alpha-blockers: May cause low blood pressure when combined. Protease inhibitors: Can significantly increase the levels of sildenafil in the blood. CYP3A4 inhibitors: Certain antibiotics or antifungal medications that affect drug metabolism. 2It works by increasing cGMP levels to relax smooth muscles and improve blood flow. 3It must never be taken with nitrates or "poppers" containing nitrates. 4Available in 25 mg, 50 mg, and 100 mg tablets in Canada.
| 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) |
5Requires a valid prescription from a Canadian healthcare professional. The agency issued a second warning for Bell Magic Bullet, after the company that distributes the product, Bell Distributors, refused to remove the product from the shelves. Sildenafil is a prescription drug approved for male erectile dysfunction but it can cause severe adverse reactions in individuals using heart medication or other products. The first warning was issued on November 14 regarding two products, Stamen and Bell Magicc Bullet. The distributor for Stamen (which also contained sildenafil), RandA Foods based in Ontario, complied with Health Canada's request to remove their product from the shelves. Neither product had been labelled to show that it contains sildenafil. No adverse reports have yet been associated with the use of Bell Magicc Bullet.
