Men with weak erections are treated with Fildena 150 mg medication. Take this medication half an hour before sexual activity. Sildenafil, one of the ingredients in this medication, aids in boosting blood flow to the male penis's tissues. This medication can be taken with water, but avoid breaking or chewing the tablet. Follow your doctor's advice when taking this medication. This medication has a 3 to 6-hour half-life, so avoid taking it too often. Cold beverages and fatty meals should not be consumed with this medication since they will lessen its effectiveness.