Boxes of Alka-Seltzer Plus cold relief are buy one get one 50% off this week at Walgreens! (Check the last page of this week’s Walgreens ad to see the deal advertised.) Buy two boxes and use two printable manufacturer Alka-Seltzer coupons. Stack them with a Walgreens store coupon from page 43 of the October Savings Book, located in the front of the store with the weekly ads. (Even though it’s now November, the coupon is still valid through tomorrow.) One Walgreens store coupon will automatically apply to both Alka-Seltzer items. Pay $1.87 each.