ATC Group: A03AB Synthetic anticholinergics, quaternary ammonium compounds

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 A03AB in the ATC hierarchy

Level Code Title
1 A Alimentary tract and metabolism
2 A03 Drugs for functional gastrointestinal disorders
4 A03AB Synthetic anticholinergics, quaternary ammonium compounds

Group A03AB contents

Code Title
A03AB01 Benzilone
A03AB02 Glycopyrronium bromide
A03AB03 Oxyphenonium
A03AB04 Penthienate
A03AB05 Propantheline
A03AB06 Otilonium bromide
A03AB07 Methantheline
A03AB08 Tridihexethyl
A03AB09 Isopropamide
A03AB10 Hexocyclium
A03AB11 Poldine
A03AB12 Mepenzolate
A03AB13 Bevonium
A03AB14 Pipenzolate
A03AB15 Diphemanil
A03AB16 (2-benzhydryloxyethyl)diethyl-methylammonium iodide
A03AB17 Tiemonium iodide
A03AB18 Prifinium bromide
A03AB19 Timepidium bromide
A03AB21 Fenpiverinium
A03AB53 Oxyphenonium, combinations

Active ingredients in A03AB

Active Ingredient Description

Glycopyrronium is an inhaled long-acting muscarinic receptor antagonist (anticholinergic) for once-daily maintenance bronchodilator treatment of COPD. Glycopyrronium works by blocking the bronchoconstrictor action of acetylcholine on airway smooth muscle cells, thereby dilating the airways.


Otilonium is endowed with a marked spasmolytic action on the smooth muscle of the digestive tract.


Prifinium is an anticholinergic preferably acting at muscarinic receptors in the gastrointestinal tract. Prifiniumโ€™s mechanism of action is believed to be due to its activity as an antispasmodic agent. It is used primarily in the treatment of irritable bowel syndrome.


Propantheline inhibits parasympathetic activity by blocking the action of the neurohormone, acetylcholine, on the neuroeffector cell. This blocking action of propantheline is instrumental in reducing gastric acid secretion and gastrointestinal motor activity.

Tiquizium bromide

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