Erectile dysfunction is treated with Fildena. Sildenafil citrate, an inhibitor of phosphodiesterase type-5, is the active ingredient in this oral medication. Male impotence can be effectively treated with this medication. It aids a guy in achieving and sustaining an erection for effective sexual activity. Always employ preventative measures because this medication is not a contraceptive. It will cause a sharp drop in blood pressure, so avoid using it if you are taking any recreational medicines or medications that include nitrates. Headache, flushing, heartburn, upset stomach, stuffy nose, lightheadedness, dizziness, or diarrhea are the most frequent fildena side effects.