Handling botulinum toxins: an updated literature review.

Background: Botulinum toxin (BoNT) has been in use since the late 1970s, and over the last 20 years, its use has been extended to new indications in various areas of medicine. During these years of clinical use, some of the initial ideas have changed, and others have remained stable along with increasing experience with and knowledge about BoNTs.

Objective: To review the literature and prescribing information on all of the available products and to update the concept of handling toxins (preparations, reconstitution, storage, sterility, and dilution).