Publix has a new digital coupon available in the app for a FREE Mtn Dew Energy Drink (Exp. 4/14). If you don't have the app, click here to download it then log into your Publix account. Tap on Savings then Digital Coupons, then search 'Mountain Dew' to locate. Clip each coupon to save to your account then enter the phone number associated with your account at Publix when you check out to redeem.