The greatest medication for erectile dysfunction and impotence in males is fildena 100mg. One of the ingredients in this medication is sildenafil, which helps men's penile tissues receive more blood flow. This medication can be used either before or after a meal. Consume this medication with water; do not crush or chew the tablet. Follow your doctor's advice when taking this medication. This medication has a six-hour half-life. Avoid taking this medication with cold or fatty foods as they will lessen its effectiveness.