V'ardenafil's indications and contra-indications are the same as with other PDE5 inhibitors; It is closely related in function to citrate and t'adalafil. The difference between the v'ardenafil molecule and citrate is a nitrogen atom's position and the change of s'ildenafil's p'iperazine ring methyl group to an ethyl group. T'adalafil is structurally different from both v'ardenafil. V'ardenafil's relatively short effective time is comparable to but somewhat longer than s'ildenafil's.
Beyond its indications for erectile dysfunction, v'ardenafil may be effective in the treatment of premature ejaculation, where it may significantly increase the time from penetration to ejaculation
It is a highly selective PDE-5 inhibitor, playing a role in the treatment of the penile erection mainly through specific inhibition of PDE-5 activity. Compared with similar products of the drug, it has the characteristics of fast onset of action, efficacy reliable, high quality and erection of good security.

Function and Application
1.It's indications and contraindications are the same as with other PDE5 inhibitors; it is closely related in function to s'ildenafil citrate and t'adalafil . The difference between the v'ardenafil molecule and s'ildenafil citrate is a nitrogen atom's position and the change of s'ildenafil's p'iperazine ring methyl group to an ethyl group. T'adalafil is structurally different from both s'ildenafil and v'ardenafil. V'ardenafil's relatively short effective time is comparable to but somewhat longer than s'ildenafil's.
2. Beyond its indications for erectile dysfunction, v'ardenafil may be effective in the treatment of premature ejaculation, where it may significantly increase the time from penetration to ejaculation.