A group of drugs known collectively as Fildena are prescribed to individuals who have erectile dysfunction (ED). Sildenafil Citrate is the active component of Fildena drugs. In order to help men with ED obtain and sustain erections that are enough for pleasurable sexual activity, sildenafil citrate works by boosting blood flow to the erectile tissues of the penis during sexual stimulation. People taking Fildena should be aware of any possible adverse effects and drug interactions, just like anyone taking any medicine. Headache, flushing, indigestion, nasal congestion, and changes in vision are examples of common adverse effects.