What effect do anticholinergic agents have on salivation?

Anticholinergic agents are known to block the action of acetylcholine on muscarinic receptors. Acetylcholine is a neurotransmitter that plays a significant role in the stimulation of salivary glands, leading to increased salivation. When anticholinergic drugs are administered, they inhibit the action of acetylcholine, resulting in a reduction of salivary gland activity. This mechanism leads to decreased saliva production and can cause dry mouth, also referred to as xerostomia.

This decrease in salivation is a common side effect of many medications that fall under the category of anticholinergic agents. By understanding this pharmacological action, it becomes clear why the correct choice indicates a decrease in salivation as the primary effect of anticholinergic agents.