Wal-Mart has the Benadryl Itch relief sticks for $2.28-$2.50 (varies by store). There was a $5/2 Benadryl products (other products also listed on the coupon) in the 4/11 Red Plum.
That makes two of these sticks FREE (with overage if your store allows)
Target has also been reported to have similar prices on these sticks.