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Viagra (Sildenafil) is a tablet used to treat erectile dysfunction in men. It works by improving blood flow to the penis when you are sexually stimulated. Viagra has no effect on sexual desire or libido, and does not affect ejaculation. Viagra is a blue, diamond-shaped tablet marked PFIZER on one side and VGR 50 on the other. The tablets are available in blister packs containing 1, 4, 8 or 12 tablets. Sildenafil citrate is the name of the drug contained, whereas Viagra is the 'brand-name' given to the preparation by the manufacturer. Pfizer UK.
Viagra does not 'cure' erectile dysfunction. It may help you achieve an erection but does not treat the underlying problems which may bring on this problem. In the event of ED due to psychogenic or emotional reasons the facilitation of erections may provide some long term benefit by resolving the 'mental block'.
Men who are unable to achieve or maintain an erection suitable for sexual intercourse should consider whether Viagra is a suitable option.
Clinical studies have confirmed that Viagra is effective. In psychogenic erectile dysfunction response rates as high as 80-90% have been reported. Over half of men with type 1 diabetes had improved erections with Viagra.
How long does it take to work?
Viagra usually starts to work within half an hour but this may be as soon as 15 minutes.
Yes. If used carefully in keeping with the prescribing guidance and avoiding heart medications Viagra is a safe form of treatment.
- Men who do not have erectile dysfunction should not take Viagra.
- It is not suitable for use in women or children.
- You should not take Viagra if you are taking any heart medication containing Nitrates. furthermore if you have recently used Viagra you should inform health professionals before they administer any treatment such as nitrolingual spray.
- You should not take Viagra without a doctor's recommendation. It may be offered to you by a friend or you may obtain the tablets on the 'black-market' (which is also illegal). Use of Viagra in this manner may be very dangerous to your health and is not to be recommended.
Yes. If you have diabetes you are eligible for an NHS prescription. If not you may obtain a private prescription from your GP. Tablets obtained illegally may be dangerous and may not even contain Viagra.
The recommended dose is usually 50 mg. If 50 mg is not effective your doctor is likely to suggest you increase the dose to 75 mg or 100 mg. The maximum recommended dose is 100 mg as higher doses are not likely to be effective. Viagra is slightly unusual type of medication in that you only need to take it if it has a beneficial effect and then only as and when required.
Take the prescribed dose one hour before sexual intercourse. Swallow the tablet whole with some water. It is important to remember that Viagra will not work in the absence of sexual stimulation. If you are not sexually aroused, the usual pathways leading to an erection will not be activated. The amount of time Viagra takes to work is variable but it is usually effective within half to one hour. If you have eaten a full meal it may take longer to work, especially if the meal was rich in fat.
Side effects of Viagra which may be encountered are
- nausea and vomiting
- altered blue/green colour vision
- some patients complain of muscular pains
If dizzyness occurs, you should not drive or operate machinery.
About one in ten people have one or more of these side effects though only a third of these would need to stop taking the medication.
Rarely prolonged painful erections have been reported. If you have an erection which lasts more than 2-4 hours you should consult your doctor without delay.
The maximum recommended frequency is once each day. There is no time limit to how long you may continue with using this treatment.
Can I take Alcohol with Viagra?
Alcohol does not affect Viagra, however alcohol can have an adverse effect on sexual function and can contribute to your inability to achieve an erection.
Does having a meal influence the action of Viagra?
Viagra works more quickly on an empty stomach. You can take Viagra with food and it should not affect it’s efficacy. Avoid a diet high in fat as this will slow absorption.
I used it, it didn’t work. What now?
Failure with the first dose of Viagra is not uncommon. If you have not had sex for a while it may take several attempts to get going!
Dr Nishan Wijenaike, Consultant Physician
West Suffolk Hospital Diabetes Service
TOPICS IN THIS SECTION
Erectile Dysfunction Health Center
It is estimated that about 35% to 75% of men with diabetes will experience at least some degree of erectile dysfunction — also called ED or impotence — during their lifetime.
Men with diabetes tend to develop erectile dysfunction 10 to 15 years earlier than men without diabetes. As men with diabetes age, erectile dysfunction becomes even more common. Above the age of 50, the likelihood of having difficulty with an erection occurs in approximately 50% to 60% of men with diabetes. Above age 70, there is about a 95% likelihood of having some difficulty with erectile dysfunction.
Is Your Type 2 Diabetes Under Control? Get Your Health Score
Why Do Men With Diabetes Have Erectile Dysfunction?
The causes of erectile dysfunction in men with diabetes are complex and involve impairments in nerve, blood vessel, and muscle function.
To get an erection, men need healthy blood vessels, nerves, male hormones, and a desire to be sexually stimulated. Diabetes can damage the blood vessels and nerves that control erection. Therefore, even if you have normal amounts of male hormones and you have the desire to have sex. you still may not be able to achieve a firm erection.
What Treatments Are Available for Men With Diabetes and Erectile Dysfunction?
Men with diabetes having trouble with achieving and/or maintaining an erection can take oral medications like sildenafil (Revatio, Viagra ), tadalafil (Adcirca, Cialis ), avanafil (Stendra), or vardenafil (Levitra. Staxyn).
However, because people with diabetes also tend to have problems with their heart. these medications may not be appropriate and could cause dangerous interactions with some heart medicines. Talk to your doctor to determine what treatment is best.
Additional treatments men with diabetes might want to consider include intracavernous injection therapy. vacuum erection (not constriction) devices. venous constriction devices (for venous leak syndrome), intraurethral therapy. penile prostheses (inflatable and malleable), and sex therapy .
So what treatment is best? It depends on many factors including a man’s health and his ability to tolerate the treatment. Ask your doctor if you should see a specialist (a urologist) to determine the best treatment for your situation.
WebMD Medical Reference
Viagra and Diabetes
Drugs containing phosphodiesterase type 5 (PDE-5) inhibitors and traded as Viagra, Levitra and Cialis came as the expected wonder for males suffering from erectile dysfunction (translated to sexual impotence).
But a new research assessed how safe these products could be for diabetes patients.
The study verified whether sildenafil (Viagra), vardenafil (Levitra) and tadalafil (Cialis) are a safe and effective option for males suffering from diabetes.
Diabetic men involved in the study displayed improvements on all measures of erectile function, with an average difference of 26.7 % more “successful intercourse attempts” compared to placebo subjects, even if diabetes provokes many chronic conditions, such as heart disease and high blood pressure, but also a three times higher probability to have erectile dysfunction than men who do not have diabetes.
“The results of our meta-analysis are not surprising, but give strength to the general notion that this class of drugs is efficient and safe for this specific wide population,” said lead author Moshe Vardi, M.D. with the internal medicine division at Lady Davis Carmel Medical Center in Israel.
The 12 weeks research used 1,759 volunteers, half assigned to receive PDE-5 inhibitor therapy and the rest to be a placebo group. 80 % of the subjects had type 2 diabetes and the rest type 1 diabetes.
The research compassed volunteers of similar age, medical history, other prescribed medications or severity or duration of diabetes or erectile dysfunction.
PDE-5 inhibitors work by boostong the effects of nitric oxide, relaxing this way the smooth muscles in penis arteries during sexual stimulation, allowing increased blood flow into the penis and consequently erection. “PDE-5 inhibitors have been considered the mainstay of treatment for erectile dysfunction in the general population for many years,” said Vardi. “Diabetics are prone to this complication, and the etiology of their erectile dysfunction is multifactorial, thus making their treatment a special challenge for physicians and other health care professionals.”
The PDE-5 inhibitors presented as the most common side effects headache, flushing and flu-like symptoms, which were 4.8 times higher than in the placebo group. “These drugs can be taken on an 'as needed' basis, as their half-life spans from several hours to 48 hours at most,” said Vardi. “Patients should also consult their physicians for drug-drug interactions and specific contraindications.”
“I prescribe PDE-5 inhibitors every day to people with diabetes,” said John Buse, M.D. director of the Diabetes Care Center at the University of North Carolina School of Medicine.
“But whether they are safe [in the long term] is the essential quandary of all medical care. We make our best guesses based on imperfect information, hopes and fears. And then we monitor progress. I am impressed that patients with diabetes in my practice in 2006 are living much better lives and perhaps longer lives than they did 10 years ago.”
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