A Comparison of Viagra, Cialis and Levitra

The most common medication therapy of first choice for the treatment of any form of organic and psychogenic erectile dysfunction today are Viagra, Levitra and Cialis online. Let’s compare these generic drugs: what do they have in common and what is the difference. The main common feature that unites them – this is of course their assistance in eriktalnoy dysfunction, similar to the principle of the penis. The difference is used as the active substance: Viagra – Sildenafil, Generic Cialis – Cialis and Levitra – Vardenafil.

And so in order. They have a similar principle, structure, contraindications, but there are some differences that require more careful consideration.

Viagra is the most studied and clinically researched drug, it is in mass use since 1998 and has helped millions of men. Viagra is the commercial name of the drug, wherein the active ingredient is sildenafil. There are several identical forms of marketing sildenafil, for example Kamagra, Viagra Super Active Plus, Viagra Professional, etc. Also sildenafil is available in form of tablets of varied dosage: 25mg, 50mg, 100mg and 150mg.

There is also a Viagra-soft, it is not necessary to take in, and dissolve under the tongue, so there is no irritation of the gastrointestinal tract, as well as drug efficacy is not reduced due to the use of alcohol and fatty foods, reducing the time between the reception of preparation and the start of its operation on the half hour.

Viagra, as well as similar drugs for the treatment of erectile dysfunction – Levitra and Cialis – is a PDE-5 inhibitor. Inhibitor of the enzyme phosphodiesterase-5 (PDE-5) creates an effective and selective phosphodiesterase-5 blockade, which in turn relaxes smooth muscle cells and increase blood flow to the penis. Viagra, just like Levitra and Cialis, is effective only after sexual stimulation, allowing to carry out a full sexual intercourse, the completion of which the penis returns to its original state.

Compared with Levitra and Cialis, Viagra in Sydney is the most short-lived in the time of action: it works for about four hours, and it should take one hour before sexual intercourse. Levitra, which is the active ingredient – Vardenafil works 8-12 hours, and the pill is possible in 15 minutes prior to sexual intercourse, which significantly affects the comfort of sexual relations. In addition, as it became known, Vardenafil is the safest drug. So, if you decide to try for the first time generic drugs that help with erectile dysfunction, we advise you to start with Generic Levitra (Vardenafil).

As well as Levitra, a selective inhibitor of FED-5 of the new generation, Cialis has advantages over Viagra. Cialis (active ingredient tadalafil) is even called the weekend pill because the effect lasts up to 36 hours – now it is the only drug that works for such a long time. As is the case with other similar drugs, Cialis has commercial counterparts, or generics, Cialis Professional – perhaps the most well-known generic tadalafil. Clinical researches with tadalafil showed its positive impact on the sexual health of cancer patients who have had prostate removed.

While taking the drug therapy of erectile dysfunction, it should be noted that Viagra is not advisable to combine with alcohol and fatty foods, as this may reduce the quality of its action. Levitra and Cialis have no such restrictions.

Side effects of these three preparations are similar but are manifested in various degrees or may not be one of these drugs. Most often, patients have experienced side effects such as facial flushing, nasal congestion, back pain, dyspepsia, and headache. Low percentage of side effects appears after administration of tadalafil and more often than the others, the side effects of sildenafil causes the difference is about 2 to 7%.

All PhD-5 inhibitors for the treatment of erectile dysfunction, you should not take with nitrates and nitric oxide donators. People who suffer from cardiovascular disease, diabetes, take medication, be exclusively on the advice of a doctor.