One medication used to treat erectile dysfunction in men is called purple viagra Medicine. This medication is really helpful in treating impotence. Only guys who are at least eighteen years old should use this medication. Sildenafil Citrate, one of the drug's ingredients, boosts men's libido for extended periods of time. Alcohol and fatty foods should not be combined with this medication. Take this medication half an hour before sexual activity. Follow your doctor's advice when taking this medication.