What are the side effects of Botox injections?
Botox for injection contains minute quantities of botulinum toxin A. It is used cosmetically to prevent wrinkles and is used medically to treat muscle spasms and movement disorders. It acts by preventing neural stimulation of muscles. It is only effective for 3 to 4 months and injections must be repeated. An analysis of 36 studies in a 2004 article in the journal “Current Medical Research and Opinion” reports that Botox injections caused mild to moderate adverse effects in approximately 25 percent of treated patients while adverse effects were reported in 15 percent of untreated control patients. The majority of reported adverse effects have occurred in people that were treated for medical reasons and not in those that received Botox injections for cosmetic purposes.
