Fildena 150 mg is a generic urological agent used primarily in the treatment of erectile dysfunction and other s*xual disorders in men. Physically, it is a small red triangular tablet and chemically it consists of sildenafil, which is the main component of the blockbuster drug Viagra. The mechanism of Fildena is also the same as Viagra, where the drug increases blood flow to the penile region. This causes an erection of the penis that can be maintained for the normal duration of s*xual intercourse. The drug is known to provide rapid action.