A client has overdosed on scopolamine (Scopace) while being treated for motion sickness. The nurse recognizes she will administer which medication for an anticholinergic overdose?

A. Flumazenil is a benzodiazepine antagonist and is not indicated for anticholinergic overdose. B. Atropine is an anticholinergic medication used to treat bradycardia and other conditions, but it would not be appropriate for treating an anticholinergic overdose, as it can worsen the symptoms. C. Naloxone is an opioid antagonist and would not be effective in treating scopolamine overdose. D. Physostigmine is a reversible cholinesterase inhibitor that can counteract the effects of anticholinergic agents, making it the appropriate choice for reversing scopolamine toxicity.