Anbesol delivers instant relief that takes you from ouch to achy! So, oral pain doesn’t hold you back. Anbesol Liquid Maximum Strength provides instant pain relief for toothache, gum pain, canker sore, and denture pain. The instant pain relief liquid contains 20% benzocaine to offer maximum relief and instantly soothes mouth pain and dental irritation. This oral anesthetic is intended for adults and children 2 years old and over Anbesol Liquid Maximum Strength Instant pain relief 0.