Safety, Pharmacodynamic Response, and Treatment Satisfaction With OnabotulinumtoxinA 40 U, 60 U, and 80 U in Subjects With Moderate to Severe Dynamic Glabellar Lines.

Although the 60-U dose failed to reach significance vs the 20-U dose for the primary endpoint, upon closer examination, this difference was caused by only 2 subjects not achieving a ≥1-grade improvement in GLs from baseline.

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