Fildena is a very effective drug for dealing with erectile dysfunction in men.

You should only take prescription medicines-whether for erectile dysfunction or for other conditions-after being advised to do so by a doctor. So as much as it might be tempting to buy Fildena, Fildena or any other erectile dysfunction treatment from a cheap online source without a prescription, it’s really not worth doing so. The medicine might not be suitable for you and, if it is not from a properly regulated online pharmacy, it could in fact contain anything. But remember, these medicines must be both safe and legal, so no sneaky nipping back to those dodgy Fildena websites. The tablets are swallowed orally, and the jelly is dissolved on the tongue. 
Buying unregulated and illegal drugs is never worth the risk to your safety and personal health, especially when there is such a wide range of cheap, legal treatments for erectile dysfunction available. The brands available (each with a different active ingredient) are: Fildena (sildenafil), Cenforce (tadalafil), Vidalista (vardenafil), and Spedra (Avanafil), and have been tested for safety and efficiency in solving erection problems. 4 5 Since becoming available in 1998, sildenafil has been a common treatment for erectile dysfunction; its primary competitors are tadalafil (trade name Cenforce) and vardenafil (Vidalista).

Tentative evidence suggests that sildenafil may help men who experience antidepressant -induced erectile dysfunction 8. 2 Other drugs that interfere with the metabolism of sildenafil include erythromycin and cimetidine , both of which can also lead to prolonged plasma half-life levels. 18 Studies on the effects of Fildena when used recreationally are limited, but suggest it has little effect when used by those not suffering from erectile dysfunction. 
20 Sildenafil is sometimes used to counteract the effects of other substances, often illicit. Professional athletes have been documented using sildenafil, believing the opening of their blood vessels will enrich their muscles. Sildenafil and/or N-desmethylsildenafil, its major active metabolite, may be quantified in plasma, serum, or whole blood to assess pharmacokinetic status in those receiving the drug therapeutically, to confirm the diagnosis in potential poisoning victims, or to assist in the forensic investigation in a case of fatal overdose: https://efildena.com/ 
Sildenafil is a potent and selective inhibitor of cGMP-specific phosphodiesterase type 5 (PDE5), which is responsible for degradation of cGMP in the corpus cavernosum The molecular structure of sildenafil is similar to that of cGMP and acts as a competitive binding agent of PDE5 in the corpus cavernosum, resulting in more cGMP and better erections. Sildenafil is excreted as metabolites predominantly in the feces (about 80% of administered oral dose) and to a lesser extent in the urine (around 13% of the administered oral dose). Under the tongue use of sildenafil for erectile dysfunction results in an average onset of action of 15 minutes and lasting for an average of 40 minutes. 
The drug was patented in 1996, approved for use in erectile dysfunction by the FDA on March 27, 1998, becoming the first oral treatment approved to treat erectile dysfunction in the United States, and offered for sale in the United States later that year. 
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