BOTOX® has been available for over 20 years, and has been used to treat many medical conditions before it's cosmetic uses were discovered. When used medically, the doses are much higher and much more frequent than those used in cosmetic treatments. Consequently, it's safety profile is well established.
BOTOX® is an approved prescription drug by the FDA and the Health Protection Branch of Health Canada. It is manufactured by Allergan Inc.
However, as with any prescription drug, there are potential side effects you should be aware of.
For further information on the safety of BOTOX® Cosmetic and potential side effects, please refer to the product monograph. (link to the product monograph)