Fildena 100 mg is a popular medication used to treat erectile dysfunction. It contains sildenafil citrate, the same active ingredient found in Viagra. Sildenafil works by inhibiting the enzyme phosphodiesterase type 5 (PDE5), which results in the relaxation of smooth muscle cells and increased blood flow to the penis. This process helps achieve and maintain an erection sufficient for sexual activity. Compared to other ED medications, Fildena 100 mg is noted for its efficacy and affordability. It is widely approved for use and has a solid safety profile when used as directed.