What are the safety issues or side effects of Botox?
All medications have some side effects. With BOTOX®, side effects are usually transient and mild to moderate in nature. Some people notice temporary weakness of muscles or discomfort at the injection site. Based on a recent study of BOTOX® in the treatment of blepharospasm, drooping of the eyelid occurred in 20.8% of patients. Other side effects may include eye irritation, dry eye, tearing, light sensitivity (10%), and superficial punctate keratitis.