How frequently can you take viagra

A routine night situation would involve 3 or maybe 4 or 5 hours of erection time, depending on how many hours the person slept. So from the perspective of the penis, sleep is the real time when oxygenation occurs. For people with ED, a daily dose of Viagra can improve oxygenation for the penis by improving the quality of nighttime erections.

Controlled studies have shown this going back to Ultrasound gives us the ability to assess the degree of scarring in an individual, Goldstein said. The prostate, like the penis, consists of a lot of smooth muscle in it, and relaxing the smooth muscle will lessen the grip of the prostate on the urethra.

The higher grip is what causes difficulty in urinating. The endotheleum is the lining of the blood vessel. When it gets injured, this leads to the development of plaque or artherosclerosis. Viagra comes as an oral tablet in different dosages. When used to get an erection, Viagra generally takes about half an hour to an hour to work. Exactly how soon it works varies individually. Prescriptions for daily use of Viagra are now relatively common, Goldstein said, especially since the FDA approval of daily Cialis.

Side effects from Viagra are usually mild and may go away in time. Side effects include:. Viagra was the first ED medication, but now there are several drugs to use for ED. Each of these drugs is slightly different in composition from Viagra, and you may react differently to them. Be honest and truthful on your questionnaire, to minimise the risk of experiencing side effects from the medication. The average dose of Sildenafil is 50mg, which begins to work within an hour and can help you achieve and maintain erections for the next hours.

However, you can safely take up to mg of Sildenafil in any 24hr period. You can take up to mg of Sildenafil every day, provided you experience no side effects. No, you should never mix two erectile dysfunction medications together. There is no added benefit to taking Sildenafil and Tadalafil at the same time, and it can be dangerous to do so.

From our health centre. Experts, information and hot topics. See all Erectile Dysfunction articles. Alcohol and Erections: A Rocky Relationship. What is the Cost of Viagra? How Long Do Erections Last? Viagra Not Working? Here are Your Options. Is Cialis Bad for Your Heart? Shop Erectile dysfunction.

In 30 seconds… You can take Sildenafil, an erectile dysfunction medication, every day, up to the maximum recommended dosage of mg. Sildenafil The generic unbranded form of Viagra. Best for. Shop ED. What if I take too much? Taking too much sildenafil by accident can cause unpleasant side effects, such as: headaches dizziness indigestion blocked nose altered vision Talk to your doctor if you have taken too much sildenafil and you're worried about these side effects.

Common side effects Common side effects happen in more than 1 in people. If you get these side effects, keep taking the medicine, but tell your doctor or pharmacist if these side effects bother you or do not go away: headaches feeling sick hot flushes, including facial flushing indigestion a colour tinge to your vision or blurred vision stuffy nose dizziness Serious side effects Serious side effects are rare and happen in less than 1 in 1, people.

Stop taking sildenafil and call a doctor straight away if you get : chest pains - if this happens during or after sex, get into a semi-sitting position and try to relax; do not use nitrates to treat your chest pain prolonged and sometimes painful erections - if you have an erection that lasts for more than 4 hours, contact a doctor immediately a sudden decrease or loss of vision a serious skin reaction - symptoms may include fever, severe peeling and swelling of the skin, blistering of the mouth, genitals and around the eyes seizures Serious allergic reaction In rare cases, it's possible to have a serious allergic reaction anaphylaxis to sildenafil.

These are not all the side effects of sildenafil. For a full list, see the leaflet inside your medicines packet. Information: You can report any suspected side effect to the UK safety scheme. Sildenafil is not recommended in pregnancy and while breastfeeding. Non-urgent advice: Tell your doctor if you're:.

Some medicines do not mix well with sildenafil. Tell your doctor if you're taking these medicines before you start sildenafil : nitrates for chest pain riociguat for pulmonary hypertension recreational drugs called poppers, such as amyl nitrite Mixing sildenafil with herbal remedies and supplements Some complementary therapies may have ingredients that could interfere with sildenafil and cause side effects.

Important Tell your doctor or pharmacist if you're taking any other medicines, including herbal remedies, vitamins or supplements. How does sildenafil work? Sildenafil belongs to a group of medicines called phosphodiesterase 5 PDE5 inhibitors.

This increases the blood supply to the lungs and reduces the workload of the heart. How well does it work for erection problems? Sildenafil works well for erectile dysfunction. In general, at least two-thirds of men say they have harder erections after taking it. If sildenafil does not work for you, it may be because: you have not waited long enough after taking it before trying to have sex you have waited too long after taking it to have sex the dose is not high enough you're not sexually aroused enough.

How long does it take to work? Sildenafil usually starts to work within 30 to 60 minutes. It's triggered by sexual stimulation, so you need to be aroused for it to work. How long will it work for?

You should be able to get an erection at any time between 1 and 4 hours after taking sildenafil. Your erection should go away after you have had sex. Can I take it as often as I want? If you're taking sildenafil for erectile dysfunction, do not take it more than once a day. Is it safe to take it for a long time? Sildenafil is safe to take for a long time.

There do not seem to be any lasting harmful effects from taking it for many months and years. Are there any other medicines that can improve erections? If sildenafil does not work, there are other tablets you could try that work in a similar way, such as: tadalafil Cialis - can be taken up to 36 hours before sex avanafil Spedra - can be taken up to around 4 hours before sex vardenafil Levitra - can be taken up to around 4 hours before sex You could also try a medicine called alprostadil.

Alprostadil comes as: an injection directly into your penis a small pellet placed inside your urethra the tube that carries urine from your bladder to the tip of your penis If you cannot get erections because of a hormonal problem, your GP may refer you to an endocrinologist who specialises in the treatment of hormonal problems.

Are there other treatments for erectile dysfunction? Other treatments for erectile dysfunction include: a vacuum pump psychological treatments penile implants pelvic floor muscle exercises Some complementary therapies, such as acupuncture, have claimed to treat erectile dysfunction.

Is there a herbal Viagra? There are lots of treatments that claim to be a "herbal Viagra". In fact, there's no such thing. A herbal Viagra has never been approved as a treatment for erectile dysfunction. Plus, these treatments may be fake or unsafe.

Can women use it? Women can use sildenafil for pulmonary hypertension. There's no good evidence that sildenafil works for women with sexual problems. Will it affect my fertility? But speak to a pharmacist or your doctor before taking it if you're trying to get pregnant. Will it affect my contraception? Can I drink alcohol with it? A beer or a couple of glasses of wine are not likely to stop or delay sildenafil working.