Botulinum neurotoxin type A (BoNT-A) treatments are done on a per unit basis. A Botox Cosmetic vial contains 100U of Botox; this can be suspended into solution with any number of different volumes of saline. The volume of Botox injected will then depend upon the number of units of activity the doctor wishes to administer. I typically suspend Botox in 2cc of saline, which is a concentration of 50U/cc (or 1U/0.02cc). I use a 1cc syringe to inject, so that syringe can hold 50U of Botox based upon my typical suspension. Each physician will have his or her preference for how they resuspend the BoNT-A and how much they inject at each site. If you are curious about how it is administered then just ask them. Best wishes, Ken Dembny
There is no correct answer as to how many units of Botox can go into a syringe. The answer depends on how much volume of saline is used to reconstitute the Botox and how big of a syringe is used. Technically, 100 units or more could be put in one syringe. Most doctors use a 1cc syringe to inject Botox and most likely use an average of 20 units or so to treat a particular area. The amount can vary from doctor to doctor and from patient to patient.
