Efficacy of OnabotulinumtoxinA in Migraine

BOTOX contains onabotulinumtoxinA, an acetylcholine release inhibitor and a neuromuscular blocking agent available in the lyophilized form of purified clostridium botulinum toxin type A, suitable for injection, for intramuscular, intradetrusor, or intradermal use. The recommended dilution is 100 Units/2 mL, with a final concentration of 5 Units per 0.1 mL. The recommended dose for treating chronic migraine is 155 Units administered intramuscularly using a sterile 30-gauge, needle as 0.1 mL (5 Units) injections per each site.