title: A new reason to frown. Does Botox get into the brain? Troubling research contradicts earlier findings about the treatment.
authors.forename: Sharon
authors.initials: S
authors.lastname: Begley
mesh_terms: D000818:Animals; D019274:Botulinum Toxins, Type A / Q000009:adverse effects / Q000493:pharmacokinetics*; D001921:Brain / Q000378:metabolism*; D004348:Drug Labeling; D006801:Humans; D007267:Injections; D009465:Neuromuscular Agents / Q000009:adverse effects / Q000493:pharmacokinetics; D009498:Neurotoxins / Q000009:adverse effects / Q000493:pharmacokinetics*
chemical_list: D009465:Neuromuscular Agents; D009498:Neurotoxins; D019274:Botulinum Toxins, Type A