Fildena 100 mg is a medication used to treat erectile dysfunction (ED) in men, containing 100 mg of sildenafil citrate. This active ingredient works by inhibiting the enzyme phosphodiesterase type 5 (PDE5), which increases blood flow to the penis during sexual arousal, allowing for the achievement and maintenance of an erection. Typically taken about 30 minutes to one hour before sexual activity, Fildena 100 can provide effective results for up to four to six hours, making it a reliable option for men seeking to enhance their sexual performance.