The medication Malegra is used to treat erectile dysfunction and impotence in men. Sildenafil, an ingredient in this medication, aids in boosting blood flow to men's penile tissues. Only men who are at least eighteen years old should use this medication. This medication has a 3 to 6-hour half-life. Take this medication 30 minutes or an hour before sexual activity. 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 can be taken either before or after a meal. Consume this medication with water; do not crush or chew the tablet. Avoid taking this medication with alcoholic beverages or high-fat foods.