Sildenafil is available as oral tablets at doses of 25, 50, and 100 mg. It should be taken approximately one hour before sexual activity. In some men, the onset of action of the drug may be as early as 11-20 minutes. Sildenafil should be taken on an empty stomach for best results since absorption and effectiveness of sildenafil can be diminished if it is taken shortly after a meal, particularly a meal that is high in fat. 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. safe online generic viagra buy
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viagra online no prescription Mental heath (psychological) causes - Various mental health conditions may cause you to develop ED. For example: Stress. For example, due to a difficult work or home situation. Anxiety. Relationship difficulties. Depression. There was no possibility to order viagra online earlier, and it was necessary to address for purchase of this preparation in a drugstore that confused many men much. online
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One of the forms of phosphodiesterase is termed PDE5. The prescription PDE5 inhibitors sildenafil (Viagra), vardenafil (Levitra) and tadalafil (Cialis) are prescription drugs which are taken orally. They work by blocking the action of PDE5, which causes cGMP to degrade. Erectile Dysfunction At A Glance: Treatments include psychotherapy, adopting a healthy lifestyle, oral PDE5 inhibitors (Viagra, Levitra, and Cialis), intraurethral medications, intracavernosal injections, vacuum devices, surgery, and working with doctors to avoid medications that can impair erectile function. The following are common laboratory tests to evaluate erectile dysfunction: Urinalysis: An abnormal urinalysis may be a sign of diabetes mellitus and kidney damage. Lipid profile: High levels of LDL cholesterol (bad cholesterol) in the blood promotes atherosclerosis. In randomized controlled trials, an estimated 60% of men with diabetes, and 80% of men without diabetes experienced improved erections with sildenafil. This section needs additional citations for verification. (May 2010) Erectile dysfunction (ED) is sexual dysfunction characterized by the inability to develop or maintain an erection of the penis during sexual performance. Counselling - Sometimes couple counselling, or sex therapy is useful. These are most useful if certain psychological problems are the cause of, or the result of, ED. In some cases, sex therapy is used in addition to another treatment option.