My mother who is allergic to all narcotic pain medicine just had implants put into her whole top of the mouth. Several teeth pulled, gums shaved down, all happened when muscles took to the anesthesia but she felt and heard everything. She was in excruciating pain for 4 days unable to eat or drink without pain. Gave her this, she put under her tongue but gaged and spit out instead of swallowing (she has issues with medicine) before she could walk back to couch she said she already felt better. Tested out taking a drink and low and behold the pain was gone. She slept in her bed for the first time and got up to clean the next morning she was feeling that good. Highly recommend.