How do you find a good deal at Walgreen's? Coupons! The store allows you to stack a manufacturer's coupon with a store coupon, so you can maximize your savings! Store coupons come in 2 forms. They can be found in the weekly Sale Ad for you to cut out and provide to the cashier at checkout, or they can be found in a monthly booklet that is located at the front of the store near the Sale Ads. Walgreen's also gives out Register Rewards for certain purchases. These are coupons that may be used on your next visit for anything up to the value of the coupon. They are essentially cash. You may use as many Register Rewards (RR) as your total allows! They do have an expiration date, however, so you have to keep an eye out for that.
Here is Walgreen's Official Coupon Policy. Print it out and bring it with you in case you need it.