Purple Pill Viagra is a treatment option for male sexual problems. Impotence and erectile dysfunction are the conditions this drug is used to treat. This medication is only for use by men who are eighteen years of age or older. The half-life of this medication is 24 hours. sildenafil, an ingredient in this drug, aids men in achieving a strong erection during sexual activity. You can take this medication with or without food. It is not recommended to take this medication with cold beverages or fatty foods as they will reduce its effectiveness. Adhere to your doctor's instructions when using this medication.