Complex sentence: Propantheline is one of a group of antispasmodic medications which work by blocking the action of the chemical messenger acetylcholine, which is produced by nerve cells, to muscarinic receptors present in various smooth muscular tissues, in places such as the gut, bladder and eye.
Split into simpler sentences: Propantheline is one of a group of antispasmodic medications which work by blocking the action of acetylcholine, which is produced by nerve cells, in the body. It acts on muscarinic receptors that are present on smooth muscle in places such as the gut, bladder and eye.