| ATC code A: Alimentary tract and metabolism |
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| Other ATC codes |
ATC code A Alimentary tract and metabolism is a section of the Anatomical Therapeutic Chemical Classification System, a system of alphanumeric codes developed by the World Health Organization (WHO) for the classification of drugs and other medical products.
Codes for veterinary use (ATCvet codes) can be created by placing the letter Q in front of the human ATC code: for example, QA.
National issues of the ATC classification may include additional codes not present in this list, which follows the WHO version.
References
- "ATC (Anatomical Therapeutic Chemical Classification System) – Synopsis". National Institutes of Health. Retrieved 1 February 2020.
- World Health Organization. "Anatomical Therapeutic Chemical (ATC) Classification". World Health Organization. Retrieved 3 January 2022.
- "Structure and principles". WHO Collaborating Centre for Drug Statistics Methodology. 15 February 2018. Retrieved 3 January 2022.
- "ATC/DDD Index 2022: code A". WHO Collaborating Centre for Drug Statistics Methodology.
- "ATCvet Index 2022: code QA". WHO Collaborating Centre for Drug Statistics Methodology.
| Major chemical drug groups – based upon the Anatomical Therapeutic Chemical Classification System | |
|---|---|
| gastrointestinal tract / metabolism (A) | |
| blood and blood forming organs (B) | |
| cardiovascular system (C) | |
| skin (D) | |
| genitourinary system (G) | |
| endocrine system (H) | |
| infections and infestations (J, P, QI) | |
| malignant disease (L01–L02) | |
| immune disease (L03–L04) | |
| muscles, bones, and joints (M) | |
| brain and nervous system (N) |
|
| respiratory system (R) | |
| sensory organs (S) | |
| other ATC (V) | |
| Drugs for acid related disorders: Antacids (A02A) | |
|---|---|
| Magnesium (increases motility) | |
| Aluminium (decreases motility) | |
| Calcium | |
| Sodium | |
| Combinations and complexes of aluminium, calcium and magnesium | |
| Drugs for peptic ulcer and GERD/GORD (A02B) | |
|---|---|
| H2 antagonists ("-tidine") | |
| Prostaglandins (E)/ analogues ("-prost-") | |
| Proton-pump inhibitors ("-prazole") | |
| Potassium-competitive acid blockers ("-prazan") | |
| Others | |
| Combinations | |
| |
| Drugs for functional gastrointestinal disorders (A03) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Drugs for functional bowel disorders |
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| Belladonna and derivatives (antimuscarinics) |
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| Propulsives | |||||||||||||
| Bile and liver therapy (A05) | |
|---|---|
| Bile therapy | |
| Liver therapy | |
| Drugs for constipation (laxatives and cathartics) (A06) | |
|---|---|
| Stool softeners | |
| Stimulant laxatives | |
| Bulk-forming laxatives | |
| Lubricant laxatives | |
| Osmotic laxatives | |
| Enemas | |
| Opioid antagonists | |
| Others | |
| Antidiarrheals, intestinal anti-inflammatory and anti-infective agents (A07) | |
|---|---|
| Rehydration | |
| Intestinal anti-infectives | |
| Intestinal adsorbents |
|
| Antipropulsives (opioids) |
|
| Intestinal anti-inflammatory agents |
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| Antidiarrheal micro-organisms | |
| Other antidiarrheals | |
| |
| Digestives, including enzymes (A09) | |
|---|---|
| Enzymes | |
| Acid preparations | |
| Oral diabetes medication, insulins and insulin analogs, and other drugs used in diabetes (A10) | |||||||||||||||||||||||||||||||||||||||||||
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| Vitamins (A11) | |||||||||
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| Fat soluble |
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| Water soluble |
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| Combinations | |||||||||
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| Mineral supplements (A12) | |||||||||||||
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| Major |
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| Trace |
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| Ultratrace |
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| Androgens and antiandrogens | |||||||||||||
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| Androgens (incl. AASTooltip anabolic–androgenic steroid) |
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| Antiandrogens |
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| Appetite stimulants (A15) | |
|---|---|
| Exogenous | |
| Endogenous | |
| Other alimentary tract and metabolism products (A16) | |
|---|---|
| Amino acids and derivatives | |
| Enzymes |
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| Other | |