ATC Group: A03B BELLADONNA AND DERIVATIVES, PLAIN

The World Health Organization's ATC classification organizes medical drugs based on therapeutic properties, chemical composition, and anatomy. It helps make essential medicines readily available globally and is widely used in the pharmaceutical industry.

Position of A03B in the ATC hierarchy

Level Code Title
1 A Alimentary tract and metabolism
2 A03 Drugs for functional gastrointestinal disorders
3 A03B BELLADONNA AND DERIVATIVES, PLAIN

Group A03B contents

Code Title
A03BA Belladonna alkaloids, tertiary amines
A03BB Belladonna alkaloids, semisynthetic, quaternary ammonium compounds

Active ingredients in A03B

Active Ingredient

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.

Butropium is a quaternary ammonium antimuscarinic with peripheral effects similar to those of atropine. It is indicated to treat pain caused by gastrointestinal inflammation and ulcers, or diseases of the gallbladder.

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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