No. Just no. Don't do this to yourself. Put the can down and re-evaluate your life. Try to pinpoint the series of bad choices that led you to this moment where you were considering putting this inside of your body, and promise yourself that you'll never repeat it again, for your own sake. Diet Pepsi - sure, ok, that tastes alright, and is better for you than regular Pepsi. Diet Vanilla Pepsi - Nope. Never again.