What are the four common adverse effects associated with antispasmodics?

The chosen answer identifies common adverse effects that are characteristic of antispasmodic medications, particularly those with anticholinergic properties. Anticholinergic agents are known to block the action of acetylcholine in the nervous system, leading to a range of side effects that stem from this inhibition.

Dry mouth occurs because anticholinergics reduce saliva production, leading to a dry oral cavity. Constipation is a result of decreased gastrointestinal motility, as acetylcholine plays a key role in stimulating peristalsis in the digestive tract. Blurred vision can happen due to pupil dilation (mydriasis) and paralysis of the ciliary muscle, which affects the eye's ability to focus. Confusion may arise, especially in older adults, because anticholinergic drugs can cross the blood-brain barrier, affecting cognitive function.

These effects represent the classic side effects associated with the disruption of normal cholinergic activity and are often seen in both over-the-counter and prescription antispasmodic medications. Understanding these potential adverse effects is essential for monitoring patients and providing appropriate education on medication use.