Starting on 5/31 there will be a register reward deal on Ecotrin: Buy one at $2 each and get a $2 Register reward back. On the coupon inserts that came out on 5/17, there was a coupon for $2 off any Ecotrin. Use that coupon to pay $0.00 out of pocket and get a $2 Register reward back.
However, if your store adjusts the value of coupons down to match the price of the item, there’s a printable coupon you can use. You can use this coupon for $2.25 off any Ecotrin product to pay zero out of pocket and get the $2 Register reward back. You could also grab two Ecotrins. Use one of these printable coupons, pay $1.75 out of pocket and get a $2RR back. That way you get two free per transaction instead of just one.