Here’s a great freebie at CVS this week! Mucinex allergy medicine is on sale for $7.50. Purchase one box and receive $5.50 in ExtraBucks rewards. Use a $2.00 manufacturer coupon from either the 8/10 Red Plum or the 9/7 Smart Source to get one box for free! Is your store out of stock? Grab a rain check–the coupon from the 9/7 Smart Source doesn’t expire until the middle of October.