Cepacol is part of the Local Anesthetics class and treats Pain, Cold Symptoms and Canker Sores. Local anesthetics are used as anesthesia and to treat pain, postherpetic neuralgia, and ear infections. They work by blocking pain signals in the nerves. Cepacol is only available as a brand name drug. Get Benzocaine/Menthol for as low as $4.16, which is 58% off the average retail price of $9.80 for the most common version, by using a GoodRx coupon.