ATC Group: A03B BELLADONNA AND DERIVATIVES, PLAIN

Anatomical Therapeutic Chemical Classification System

Hierarchical position in ATC classification

Level
Code
Title
1
Alimentary tract and metabolism
2
Drugs for functional gastrointestinal disorders
3
A03B
BELLADONNA AND DERIVATIVES, PLAIN

ATC group contents

Code
Title
Belladonna alkaloids, tertiary amines
Belladonna alkaloids, semisynthetic, quaternary ammonium compounds

Active ingredients

Active Ingredient
Description

Atropine is an antimuscarinic agent which competitively antagonises acetylcholine at postganglionic nerve endings, thus affecting receptors if the exocrine glands, smooth muscle, cardiac muscle and the central nervous system.

Butylscopolamine is an antispasmodic agent which relaxes smooth muscle of the organs of the abdominal and pelvic cavities. It is believed to act predominantly on the intramural parasympathetic ganglia of these organs.

Hyoscyamine inhibits specifically the actions of acetylcholine on structures innervated by postganglionic cholinergic nerves and on smooth muscles that respond to acetylcholine but lack cholinergic innervation. Hyoscyamine inhibits gastrointestinal propulsive motility and decreases gastric acid secretion. It also controls excessive pharyngeal, tracheal and bronchial secretions.

Methscopolamine is an anticholinergic. The mechanism of action of methscopolamine is as a cholinergic antagonist.

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