kybella® is an fda-approved non-surgical treatment for adults with a moderate amount of fullness... or a bit more. don't receive kybella® if you have an infection in the treatment area. kybella® can cause nerve injury in the jaw resulting in an uneven smile or facial muscle weakness, and trouble swallowing. tell your doctor about all medical conditions, including if you: have had or plan to have surgery or cosmetic treatments on your face, neck or chin; have had or have medical conditions in or near your neck or have bleeding problems. tell your doctor about all medicines you take. the most common side effects are swelling, bruising, pain, numbness, redness, and areas of hardness in the treatment area. find a doctor at mykybella.com