When a client is taking an anticholinergic such as benztropine as part of the treatment for Parkinson's disease, the nurse should include which information in the teaching plan?

The correct answer is A because anticholinergics like benztropine commonly cause dry mouth due to decreased saliva production. By using artificial saliva, sugarless gum, or hard candy, the client can alleviate dry mouth symptoms. This helps in maintaining oral health and overall comfort. It is crucial for the nurse to include this information in the teaching plan to promote client adherence to the medication regimen.

Option B is incorrect as increasing fluid intake is recommended to prevent dehydration and maintain overall hydration. Option C is incorrect as discontinuing the medication abruptly can lead to withdrawal symptoms and exacerbate Parkinson's symptoms. Option D is incorrect as taking anticholinergics on an empty stomach may increase the risk of gastrointestinal side effects.