Like sildenafil, vardenafil, the active ingredient found in Filitra, is a popular medication used for the treatment of ED. The drug is very effective in combating this condition, and one of the advantages that vardenafil has over sildenafil is that it does not inhibit phosphodiesterase-6 to alter color perception, a rare negative effect, which sometimes occurs with Viagra (or sildenafil).
Also, its popularity rose because vardenafil tends to be less affected by food or alcohol, so Filitra can be taken with meals. There is also some evidence that vardenafil is more effective in diabetics than other ED medicines.