| | Botulinum Toxin Reduced Migraine Frequency in Trials: Treatment-related adverse events reported.PHILADELPHIA — OnabotulinumtoxinA appears to be a safe, effective, and well-tolerated headache prophylactic for patients with chronic migraine. PII: S1553-3212(09)70168-2 doi:10.1016/S1553-3212(09)70168-2 © 2009 Elsevier Inc. All rights reserved. | |
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