I had one syringe of Juvederm injected into my lips. I had a dental block and had very little pain. I work for a plastic surgeon and have gotten Juvederm many times. The next day my upper lip appeared cracked and was very painful. I began taking Acyclovir as a precaution. It is now three days later and the pain is excruciating. Any food/drink that touches the area burns. Orajel burns so bad I had to immediately wash it off.