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.
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Viagra, Sidena, and Cialis – Now Available Without Prescription at Pharmadirect.ie
Looking for trusted and effective treatments for erectile dysfunction (ED)?Pharmadirect.ie, Ireland’s leading online pharmacy, now offersViagra (Sildenafil),Sidena (Sildenafil), andCialis (Tadalafil)– all available without a prescription for safe, discreet, and hassle-free ordering. Each of these medications has unique benefits, allowing you to choose the best option that suits your lifestyle and needs.
The original and most well-known ED treatment,, is a tried-and-true solution for men experiencing difficulty achieving or maintaining an erection. Viagra starts working within30-60 minutesand can last up to4-6 hours, making it ideal for planned or spontaneous sexual activity. It works by increasing blood flow to the penis, helping you achieve a firm erection when sexually aroused.
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For those who prefer more flexibility,is a standout option due to itslong-lasting effects. Cialis can remain effective for up to36 hours, earning it the nickname "the weekend pill." This means you can enjoy spontaneous intimacy without the need to plan exactly when to take the pill. Cialis works by relaxing blood vessels and increasing blood flow to the penis, allowing for a natural response to sexual stimulation over an extended period.
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A new study shows that some drugs used to treat erectile dysfunction carry a warning from the FDA, the agency's largest agency.
"If you're taking Viagra or other drugs, you could get a warning from the FDA," said Dr. Peter Stahl, director of the Division of Urology at Yale University School of Medicine.
The drug, known as sildenafil citrate, is the FDA's most commonly prescribed ED medication. It has been shown to treat erectile dysfunction by relaxing blood vessels in the penis, allowing more blood to flow into the penis.
Viagra is the only FDA-approved drug to treat erectile dysfunction in men. It was previously available as a generic drug.
In 1998, the FDA approved Viagra, an oral drug to treat erectile dysfunction, for the treatment of the most severe form of sexual dysfunction in men. Since then, it has been approved for other uses, such as the treatment of pulmonary arterial hypertension, which is the only type of heart disease in men.
The study looked at patients who took Viagra for five years or longer and were taking the drug as part of a larger study to measure how effective the drug was for them, researchers said in a statement.
"We found that a combination of sildenafil citrate and the PDE5 inhibitor, tadalafil, was more effective at helping patients get erections," said lead study author Dr. Robert Schulze, who is a clinical assistant professor of urology at New York University School of Medicine.
The study was funded by Pfizer Inc., the world's largest drugmaker.
Pfizer, the world's largest drugmaker, is the largest maker of drugs for treating erectile dysfunction. Pfizer has already launched Viagra for men and its generic sildenafil citrate, the only ED medication approved by the FDA for that use.
The study was funded by AstraZeneca Pharmaceuticals LP, the world's biggest drugmaker.
Photo credit: Dr. Peter StahlThe researchers found that taking sildenafil in addition to the treatment of erectile dysfunction led to a reduction in the risk of suicide in men who were not taking the medication, compared with those taking the medication as a whole.
Viagra also had fewer side effects than other drugs that treat impotence, the study found.
For instance, sildenafil, a drug used to treat erectile dysfunction, has more side effects than Viagra. But men who took sildenafil in addition to treatment of erectile dysfunction had a 25% lower risk of suicidal thinking or self-harm compared with those taking a placebo.
The study, conducted among men with erectile dysfunction, is being published in the New England Journal of Medicine.
In fact, the researchers have already conducted an independent review of the results of the study.
Researchers said they did not find any reports of serious sexual side effects, such as erectile dysfunction, with sildenafil.
Other studies have shown that taking sildenafil, another drug for erectile dysfunction, may cause suicidal thoughts or behavior, researchers said.
However, these side effects are rare and far less common among men taking sildenafil, the study authors said.
Viagra, Pfizer's biggest seller, had the lowest rate of suicide, at only 0.4%.
Dr. David Rosenfeld, a professor of urology at New York University School of Medicine, said in an email that the study did not prove that erectile dysfunction is caused by other conditions, such as diabetes, cancer or arthritis.
However, his research found that erectile dysfunction may be linked to other medications and to the use of drugs that could have been taken with the erectile dysfunction drug.
"The drug, tadalafil, is an FDA-approved drug that is used to treat erectile dysfunction in men," Rosenfeld said.
In June, the FDA said it would approve Viagra for treating erectile dysfunction in men.
The FDA has approved other drugs for erectile dysfunction, including some that work by relaxing blood vessels in the penis.
Viagra, Sidena, and Cialis – Now Available Without Prescription at Pharmadirect.ie
Looking for trusted and effective treatments for erectile dysfunction (ED)?Pharmadirect.ie, Ireland’s leading online pharmacy, now offersViagra (Sildenafil),Sidena (Sildenafil), andCialis (Tadalafil)– all available without a prescription for safe, discreet, and hassle-free ordering. Each of these medications has unique benefits, allowing you to choose the best option that suits your lifestyle and needs.
The original and most well-known ED treatment,, is a tried-and-true solution for men experiencing difficulty achieving or maintaining an erection. Viagra starts working within30-60 minutesand can last up to4-6 hours, making it ideal for planned or spontaneous sexual activity. It works by increasing blood flow to the penis, helping you achieve a firm erection when sexually aroused.
For a cost-effective alternative to Viagra,is a great option. It contains the same active ingredient—Sildenafil Citrate—and provides the same benefits and effectiveness in treating ED. Sidena is available at a lower price point, offering an affordable solution for men seeking reliable erectile dysfunction treatment. Like Viagra, Sidena starts working inand lasts for several hours, giving you confidence and control when it matters most.
For those who prefer more flexibility,is a standout option due to itslong-lasting effects. Cialis can remain effective for up to36 hours, earning it the nickname "the weekend pill." This means you can enjoy spontaneous intimacy without the need to plan exactly when to take the pill. Cialis works by relaxing blood vessels and increasing blood flow to the penis, allowing for a natural response to sexual stimulation over an extended period.
Why Choose Pharmadirect.ie?
At, we make it easier than ever to access these proven ED treatments. Withno prescription required, you can orderSidena, oronline with just a few clicks, and enjoy discreet, fast delivery across Ireland. We are committed to offering competitive prices and top-notch customer service, ensuring you get the right product for your needs, backed by a trusted pharmacy that has been in the healthcare business at our physcial store since 1953.
Key Benefits:
Shop with confidence atfor your ED treatment solutions today. Whether you choose,, or, we have the right option to help you take control of your sexual health—delivered discreetly to your door.
Sasha Roach • Pharmadirect.ieIn business since 18 November 2019. -
Viagra, a well-known ED treatment, is known for its convenience and affordable prices. Sildenafil, the active ingredient in Viagra, is commonly used for Erectile Dysfunction (ED). And Sidena, the formulation of Sildenafil, is known for its effectiveness in treating ED. Both medicines are available in different ways to meet your needs.
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