A soda likely isn't what you grab for when needing help getting to sleep, but one maker sees the need and is coming to the rescue. Pepsi-Co is launching a new beverage called Driftwell. The company says it will help consumers relax and unwind. CNBC reports Driftwell contains 200mg of L-theanine and 10% of your daily intake of magnesium. It hits shelves nationwide in December.