Fildena 100 mg is a drug used to treat male impotence. The sildenafil citrate present in this drug works by increasing the blood flow in the arteries of the penis. This medicine should be taken only once in 24 hours. This drug should only be used by men over the age of 18. The effect of this drug lasts for about 36 hours. Alcohol should not be used while using this drug. Visit our official site erectilepharma.com for more information.