The Coupon expires 11/12/17, The Expiration date may depend on when you print it. The print limit is two. The coupon states limit of four like coupons in the same shopping trip.
Through 11/11/17, CVS has 20 Count Advil Cold and Sinus 20 Count and 10 Count Advil Sinus Congestion and Pain on sale for $5.99. Just $2.99 after the $3 off coupon above.
Walmart sells the 20 Count Advil Sinus Congestion and Pain for $8.98. Kroger has the 20 Count on sale for $8.99 through 02/21/18. $5.99 after the $3 off coupon above.