How Levitra Works
Tuesday, March 25th, 2008Levitra works by blocking an enzyme known as PDE-5, which affects the blood flow to the penis. Phosphodiesterase type 5 (PDE-5) is the predominate enzyme found in human penile erectile tissue and is associated with erections. PDE-5 inhibitors such as Levitra typically work by blocking this enzyme to enhance or prolong the erectile process.
In trials involving 1,020 men with erectile dysfunction who took the drug for one year, the average success rate in maintaining erections improved to 87 percent from 14 percent with the 10 mg dose and to 86 percent from 16 percent with the 20 mg dose.