Postal address:
Norwegian Institute of Public Health
WHO Collaborating Centre for Drug Statistics Methodology
Postboks 222 Sk°yen
0213 Oslo

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Myrens verksted 6H
0473 Oslo

Tel:  +47 21 07 81 60

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This group comprises plain antacid drugs, antacids in combination with antiflatulents and antacids in combination with other drugs.
Antacids in combination with liquorice root or linseed are classified in this group.
Plain antiflatulents, see A03AX - Other drugs for functional gastrointestinal disorders.

The DDDs for antacids are based on treatment of hyperacidity and dyspepsia, not ulcus. One exception, however, is antacids in combination with antispasmodics in A02AG, where the DDDs are based on treatment of ulcus.
For ordinary salt combinations in A02AD, fixed doses are used instead of individual doses for every single preparation (10 tablets = 10 UD; 50 ml mixture = 10 UD).

A02AA Magnesium compounds

Magnesium carbonate used for treatment of mineral deficiency is classified here.
Combinations of different magnesium compounds are classified in A02AA10 - combinations.

A02AB Aluminium compounds

Combinations of different aluminium compounds are classified in A02AB10 - combinations.

A02AC Calcium compounds

Combinations of different calcium compounds are classified in
A02AC10 - combinations.

A02AD Combinations and complexes of aluminium, calcium and magnesium compounds

Antacids with two or more of the substances in combination are classified here.
Ordinary salt combinations are classified at the same 5th level A02AD01 e.g. combinations of aluminium hydroxide, magnesium carbonate gel and attapulgite, while the various complexes with a layer structure are classified at separate 5th levels e.g. magaldrate and almagate.

A02AF Antacids with antiflatulents
A02AG Antacids with antispasmodics

Preparations containing a combination of antacids and antispasmodics are classified in this group if the main use is as an antacid. See also A03 - Drugs for functional gastrointestinal disorders.

A02AH Antacids with sodium bicarbonate

No ATC 5th levels are assigned in this group.
All oral formulations containing sodium bicarbonate including products indicated for metabolic acidosis are classified in this group.
Parenteral formulations, see B05BB.
Combinations of sodium bicarbonate and proton pump inhibitors are classified in A02BC.
Preparations containing sodium bicarbonate to be used only in connection with double-contrast radiography are classified in V07AY.

A02AX Antacids, other combinations

Last updated: 2024-01-26