Erectile dysfunction can happen for many reasons, like poor blood flow to the penis, nerve damage, hormonal issues. medication side effects or psychological and emotional issues. When suffering from erectile dysfunction, you should adopt healthy lifestyle behaviours, such as being physically active, quitting smoking and following a healthy eating plan. It is normal for men to have erectile dysfunction occasionally, but if it happens a lot, it may require medical intervention. The UK was the first to have the initiative of incorporating erectile dysfunction as an independent risk factor for cardiovascular disease. Phosphodiesterase type 5 (PDE5) inhibitors like Avanafil (Spedra), Sildenafil (Viagra), Tadalafil (Cialis), and Vardenafil (Levitra) help increase blood flow to the penis and are considered first-line treatments for the management of ED. These drugs are usually the first method patients try, but they should not be used by men who take nitrates. buy viagra online cheapest Levitra (vardenafil), a phosphodiesterase 5 (PDE5) inhibitor, is an oral medication for the treatment of erectile dysfunction (ED). It helps increase blood flow to the penis and may help men with ED get and keep an erection satisfactory for sexual activity. PDE5 inhibitors are a widely accepted and efficacious therapeutic option for the treatment of erectile dysfunction in men, as a result of extensive clinical experience with sildenafil and others. It is available in 2.5 mg, 5 mg, 10 mg, and 20 mg tablets no more than once a day. FDA approval of Levitra was based on four multi-center, double-blind, randomized, placebo controlled, fixed-dose, parallel design trials. The studies enrolled a total of 2431 men with an average age of 57 years. The doses investigated were 5 mg, 10 mg, and 20 mg. 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It works within an hour of taking a tablet, and is best taken on an empty stomach. The effects of Viagra will last for four to six hours. Viagra was developed and originally marketed by the pharmaceutical company Pfizer, and until 2013 Pfizer was the only company allowed to sell it. When Pfizer’s patent on Viagra expired, the market was open for other companies to produce the medicine, albeit under its generic name Sildenafil, rather than the brand name Viagra. Sildenafil contains exactly the same active ingredient as Viagra (sildenafil citrate), and works in the same way. Cialis, Levitra, and Viagra are oral medications used to treat erectile dysfunction (ED). You may also know them by their generic names, tadalafil (Cialis), vardenafil (Levitra), and sildenafil (Viagra). About 30 million men occasionally have a problem with getting or keeping an erection, according to the Urology Care Foundation. When ED becomes a problem, many men turn to oral ED medications. Cialis, Levitra, and Viagra each work in similar ways. But there are also some differences, such as when you take them, how long they work, and what their side effects are. Cialis, Levitra, and Viagra are all in a class of drugs called PDE-5 inhibitors. These drugs work by blocking an enzyme called phosphodiesterase type 5. Levitra efficacy Levitra Vs Viagra Vs Cialis Efficacy CanadianPharmacyMeds, Levitra Vs Viagra Vs Cialis Efficacy BestPrices! Where to buy zithromax over the counter Viagra reviews comments Buy levitra prescription Cialis 25mg Aug 18, 2014. Viagra, Levitra, Cialis – what's best? I am often asked which is the best of the three most common erectile dysfunction treatments Viagra. Viagra, Cialis and Levitra – which is best? - Cialis vs. Levitra vs. Viagra How Each Stacks Up - Healthline The Efficacy and Safety of Flexible-Dose Vardenafil Levitra® in a. 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