Save over 50% on 30-count boxes of Emergen-C! This month at Walgreens, Emergen-C boxes are buy one get one 50% off. Use two $2.00/1 printable manufacturer coupons with a $1.50/1 store coupon from this week’s Walgreens ad. The $1.50 store coupon will automatically apply to both boxes. Plus, scan the 5X Everyday Points in-ad coupon for 850 extra Balance Rewards Points, worth about $0.85.