What to choose? Viagra, Levitra and Cialis
The most common of drugs of first choice for treatment of any form of organic and psychogenic erectile dysfunction today is Viagra, Levitra and Cialis. Let’s try to compare these generic drugs: what they have in common and what is the difference. The main common feature that unites them – is of course provided their assistance in erectile dysfunction, similar to the principle of the penis. The difference is used by the active substance: Viagra – Sildenafil, Generic Cialis – Tadalafil and Levitra – Vardenafil.
And so in order. They have similar operating principle, structure, contraindications, however there are some differences that require more careful consideration.
Viagra is the most studied and clinically studied medicine, he is in extensive use since 1998 and has already helped millions of men. Viagra is the commercial name of drug, which is the active ingredient Sildenafil. There are several identical forms of marketing of Sildenafil, such as Genagra, Syagrius, Konegra, Penimeks and capacity, and others. Normally, Viagra is available in coated tablets, 25 mg, 50 mg and 100 mg, which contain Sildenafil citrate, respectively 25, 50 and 100 mg.
There is also a Viagra-soft, it must not take inside and dissolve under the tongue, so there is no irritation of the gastrointestinal tract, as well as the effect of medication is not reduced by the use of alcohol and fatty food, reducing the time between taking drug and the onset of its action on the half hour.
Viagra, as well as similar treatments for erectile dysfunction – Levitra and Generic Cialis – is a PDE-5 inhibitor. Inhibitor of the enzyme phosphodiesterase-5 (PDE-5) creates a selective and effective blockade of phosphodiesterase-5, which in turn relaxes smooth muscle cells and increases blood flow to the penis. Viagra, like Levitra and Cialis is effective only after sexual stimulation, allowing you to complete sexual intercourse, after which the penis returns to its original state.
In comparison to Levitra and Generic Cialis, a Viagra is the short duration of time: it works for about four hours, and take it to be an hour before sexual intercourse. Levitra, the active ingredient of which – Vardenafil, work 8-12 hours, and a pill is possible for 15 minutes before sexual intercourse, which greatly 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 to help with erectile dysfunction, we suggest you start with Generic Levitra .
As well as Levitra, a selective inhibitor of FED-5 a new generation of Generic Cialis has its advantages over Viagra. Cialis (active ingredient – Tadalafil) is even called the weekend pill because the effect lasts up to 36 hours – now it’s the only drug that works for such a long time. As with other similar drugs, Cialis has a commercial counterpart, Apkalis – perhaps the best known generic Tadalafil. Clinical trials of Cialis have shown its positive effect on the sexual health of cancer patients who have had prostate removed.
Side effects of these three drugs are similar, but occur in varying degrees or may not have one of these medicines. Most often, patients experienced side effects such as flushing, nasal congestion, back pain, dyspepsia, and headache. The smallest percentage of side effects after taking Tadalafil manifest, but more often than others, causing the side effects of Sildenafil, the difference ranges from 2 to 7 percent.
All FED-5 inhibitors for erectile dysfunction absolutely cannot take with nitrates or nitric oxide donators. People who suffer from cardiovascular disease, diabetes, medications should be taken only on doctor’s advice.