Do you have a Coke Rewards account? I just signed up for mine. Coke Rewards allows you to accumulate points from Coke Products and redeemed them for free coupons or merchandise. Right now you can get a free buy one get one 20oz Coke Product when you enter the code 100869373819 in your Coke Rewards account.
Thanks Bargain Briana!
ETA: This coupons says good at Walgreens only.