Fildena 100, a medication containing the active ingredient Sildenafil, is one of several medications used to treat erectile dysfunction (ED). While Fildena 100 and other ED medications share the same primary mechanism of action—improving blood flow to the penis to facilitate erections—there are differences among these medications.The active ingredient in Fildena 100 is Sildenafil, which is also the active ingredient in Viagra, a well-known brand-name ED medication. Other ED medications may contain different active ingredients, such as Tadalafil (Cialis) or Vardenafil (Levitra). https://www.flatmeds.com/product/fildena-100/