Immune to Botox? Is it possible that I have antibodies that would prevent me from getting results from Botox?

Hi DW,
Of the thousands of Botox patients that I have injected, I have never encountered a patient with immunity to the effects. There have been patients that require higher dosages, sometimes twice the usual amount.
The most popular Botulinium Toxin type A in use, and the one that you probably received from your 5 injectors is Botox manufactured by Allergan. You may consider using Dysport which will soon be marketed by Medicis as Reloxin. Mentor will be putting out another alternative called PurTox. There are two other forms Xeomin in Germany, and Prosigne in China.
If you have superficial lines in your glabella, a fractionated CO2 laser resurfacing is a great alternative, and a more permanent "fix". At age 53, you (like me) are showing other signs of aging like lax skin under the eyes, face and neck, hooding of the upper eyelids, crow's feet, and general sun damage of the skin. A single treatment with Fraxel re:pair, Active/Deep FX, or Mixto will give you overall skin rejuvenation, help you look years younger, rested, and healthy. If you choose to go with the fractionated CO2 laser, make sure to choose your treating physician most carefully. Be well.
Dr. P

It is possible to develop resistance to Botox,usually through your body making antibodies to the Botox. The number of units injected may account for decreased response. However, if you have developed a resistance, then Dysport or Xeomin may still work. Dysport, Xeomin and Botox are all preparations of botulinum toxin A which is a derived protein that works at the nerve-muscle interface to relax targeted muscles. Dysport and Xeomin have been around in Europe for a long time and more recently introduced in the USA. Note the dosage is not the same between the drugs though each works well in my experience.

Why not try a different type of muscle inhibitor, such as Dysport? If that doesn't work, then you an consider a different treatment such as fillers.