Fildena 150 is a drug used to treat male impotence. The drug contains an ingredient called sildenafil citrate. This drug works by increasing blood flow to the muscles. Fatty or cold drinks should not be consumed after taking this medicine as it slows down the effect of the medicine. It is imperative to consult a doctor for this medication. This medicine can be taken with food or on an empty stomach with water. This medicine can be taken only once a day.