The agency warned that adults and children who inadvertently took a higher dose of clonazepam than prescribed could experience side effects, including “significant” sedation, confusion, dizziness, diminished reflexes, the loss of muscle control and muscle weakness.

Clonazepam, an anxiety drug, has been recalled because of a labeling error that could result in harmful consequences.

Additional packages of clonazepam, a prescription medication used to treat seizures and anxiety, mislabeled with the incorrect strength have been added to a voluntary recall, according to the U.S. Food and Drug Administration.