$1.50 Off any one Campho-Phenique product ($1.48 Cold Sore Treatment at Walmart) Posted by Harbor Master on 12 May 2017, 9:00 am Tweet Expired Ex. 07-31-17 (May depend on when you print it)Note the Longer Ex. date(Print limit is two) Click here to print $1.50 Off any one Campho-Phenique product Walmart sells Campho-Phenique Cold Sore Treatment for $3.98, everyday. $1.48 after coupon and check out 51 rebate. Submit for $1 Cash back on Campho-Phenique Cold Sore Treatment (Check out 51 Rebate-Valid at Walmart)(limit 2)