Login required to use coupon. Walgreens has the MiO Liquid Water Enhancer Zero-Calorie Drink Mix Drops, 1.62 fl. oz. bottle (Various Flavors) on sale for $2.99.
Add two to cart (mix or match) to reach $5.98 – $2 off coupon (click “$2 off 2” coupon) – 20% off with code SUMMER20 in cart = $3.18 with free store pickup.
One bottle is enough to add flavor to 24 8 fl. oz. cups of water.