Efficacy and Safety of Botulinum Toxin Type A in the Treatment of Glabellar Lines: A Meta-Analysis of Randomized, Placebo-Controlled, Double-Blind Trials

Conclusion: This meta-analysis shows that a single 20-unit dose of botulinum toxin type A is considered remarkably effective and safe for the treatment of glabellar lines. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, II.
Source: Plastic and Reconstructive Surgery - Category: Cosmetic Surgery Tags: Cosmetic: Original Articles Source Type: research