purple viagra is used to treat male sexual problems such as erectile dysfunction and impotence. One ingredient in the drug, sildenafil, helps to increase blood flow to a man's penile tissues. See the purple viagra reviews for our store here. During sexual activity, this drug helps men get a strong erection. Take this medication 30 minutes prior to engaging in sexual activity to maximize your quality time with your partner. You can take this medication with or without food. Adhere to your doctor's instructions when using this medication.