Fildena is used to treat male sexual dysfunction. The medication is used to treat erectile dysfunction and impotence. Sildenafil is a component in this medication that helps men's penile tissues receive more blood flow. This medication is taken half an hour prior to sexual activity so that you can enjoy sexual activity with your partner. This medication has a six-hour half-life. Don't take this medication with cold beverages or fatty meals. Follow your doctor's advice when taking this medication.