What is a common side effect of anticholinergic agents?

What is a common side effect of anticholinergic agents?

• A. Drowsiness
• B. Dry mouth
• C. Nausea
• D. Restlessness

Answer: (B)

Anticholinergic drugs block muscarinic receptors, reducing parasympathetic stimulation of exocrine glands. Salivary glands rely on that stimulation to produce saliva, so blocking it decreases saliva flow and leads to a dry mouth. This is the most common and characteristic side effect you’ll see with these medications. Some anticholinergics can cause CNS effects like drowsiness or restlessness, and nausea can occur as well, but dry mouth is the hallmark and most expected outcome across many agents. Managing it is usually simple: sip water, chew sugar-free gum, and maintain good oral hydration and hygiene.

Anticholinergic drugs block muscarinic receptors, reducing parasympathetic stimulation of exocrine glands. Salivary glands rely on that stimulation to produce saliva, so blocking it decreases saliva flow and leads to a dry mouth. This is the most common and characteristic side effect you’ll see with these medications. Some anticholinergics can cause CNS effects like drowsiness or restlessness, and nausea can occur as well, but dry mouth is the hallmark and most expected outcome across many agents. Managing it is usually simple: sip water, chew sugar-free gum, and maintain good oral hydration and hygiene.