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What is erectile dysfunction? Erectile dysfunction (ED) means that you cannot get and/or maintain an erection. In some cases the penis becomes partly erect, but not hard enough to have sex properly. In some cases, there is no swelling or fullness of the penis at all. ED is sometimes called impotence. subaction showcomments cialis smile online buy cialis online Therefore, men with these conditions should not use tadalafil without having these conditions evaluated and stabilized first. For example, men with uncontrolled high blood pressure should have their blood pressure controlled; and men with potentially life-threatening abnormal heart rhythms should have these rhythms controlled. How Do Sexual Problems Affect Men? The most common sexual problems in men are ejaculation disorders, erectile dysfunction and inhibited sexual desire. Drug therapy for erectile dysfunction: One drug in particular, sildenafil (‘Viagra’), has become an international phenomenon since its launch in the late 1990s because it’s one of the first drugs to offer a relatively simple safe drug treatment that helps the majority of men with erectile dysfunction – at least 70 per cent report improved erections. The drug does not directly give a man an erection but it works by boosting the natural mechanism that leads to an erection. When a man is sexually aroused, certain tissues in his penis relax, allowing blood to flow in and fill the penis. Viagra helps by elevating the levels of the chemical that causes the tissues to relax. These effects were discovered accidentally. The drug was originally developed to improve blood supply to the heart in angina sufferers. buy levitra no prescription viagra cialis levitra order online buy cialis online Main article: Penile prosthesis - Often, as a last resort if other treatments have failed, the most common procedure is prosthetic implants which involves the insertion of artificial rods into the penis. levitra viagra online viagra online Erection begins with sexual stimulation. Sexual stimulation can be tactile (for example, by touching the penis) or mental (for example, by having sexual fantasies). Sexual stimulation or sexual arousal generates electrical impulses along the nerves going to the penis and causes the nerves to release nitric oxide, which in turn increases the production of cyclic GMP (cGMP) in the smooth muscle cells of the corpora cavernosa. The cGMP causes the smooth muscles of the corpora cavernosa to relax and allow rapid blood flow into the penis. The incoming blood fills the corpora cavernosa, making the penis expand. Drug therapy for erectile dysfunction: In a small number of cases, people who have taken sildenafil have complained of headaches, flushing and stomach-ache. It can also cause some visual problems, including an increased sensitivity to light, blurred vision or an inability to tell the difference between blue and green. Men who are already taking medicines that contain nitrates, such as nitro-glycerine (usually for angina or heart disease), are strongly advised not to use Viagra as this is dangerous and may result in a heart attack. Other similar drugs are tadalafil (‘Cialis’)and vardenafil (‘Levitra’).