ATC code C03

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ATC codes
C Cardiovascular system
C01 Cardiac therapy
C02 Antihypertensives
C03 Diuretics
C04 Peripheral vasodilators
C05 Vasoprotectives
C07 Beta blocking agents
C08 Calcium channel blockers
C09 Agents acting on the renin–angiotensin system
C10 Lipid modifying agents

A B C D G H QI J L M N P R S V
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ATC code C03 Diuretics is a therapeutic subgroup 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.[1][2] Subgroup C03 is part of the anatomical group C Cardiovascular system.[3]

Codes for veterinary use (ATCvet codes) can be created by placing the letter Q in front of the human ATC code: for example, QC03.[4] ATCvet codes without corresponding human ATC codes are cited with the leading Q in the following list.

National issues of the ATC classification may include additional codes not present in this list, which follows the WHO version.

C03A Low-ceiling diuretics, thiazides[edit | edit source]

C03AA Thiazides, plain[edit | edit source]

C03AA01 Bendroflumethiazide
C03AA02 Hydroflumethiazide
C03AA03 Hydrochlorothiazide
C03AA04 Chlorothiazide
C03AA05 Polythiazide
C03AA06 Trichlormethiazide
C03AA07 Cyclopenthiazide
C03AA08 Methyclothiazide
C03AA09 Cyclothiazide
C03AA13 Mebutizide
QC03AA56 Trichlormethiazide, combinations

C03AB Thiazides and potassium in combination[edit | edit source]

C03AB01 Bendroflumethiazide and potassium
C03AB02 Hydroflumethiazide and potassium
C03AB03 Hydrochlorothiazide and potassium
C03AB04 Chlorothiazide and potassium
C03AB05 Polythiazide and potassium
C03AB06 Trichlormethiazide and potassium
C03AB07 Cyclopenthiazide and potassium
C03AB08 Methyclothiazide and potassium
C03AB09 Cyclothiazide and potassium

C03AH Thiazides, combinations with psycholeptics and/or analgesics[edit | edit source]

C03AH01 Chlorothiazide, combinations
C03AH02 Hydroflumethiazide, combinations

C03AX Thiazides, combinations with other drugs[edit | edit source]

C03AX01 Hydrochlorothiazide, combinations

C03B Low-ceiling diuretics, excluding thiazides[edit | edit source]

C03BA Sulfonamides, plain[edit | edit source]

C03BA02 Quinethazone
C03BA03 Clopamide
C03BA04 Chlortalidone
C03BA05 Mefruside
C03BA07 Clofenamide
C03BA08 Metolazone
C03BA09 Meticrane
C03BA10 Xipamide
C03BA11 Indapamide
C03BA12 Clorexolone
C03BA13 Fenquizone
C03BA82 Clorexolone, combinations with psycholeptics

C03BB Sulfonamides and potassium in combination[edit | edit source]

C03BB02 Quinethazone and potassium
C03BB03 Clopamide and potassium
C03BB04 Chlortalidone and potassium
C03BB05 Mefruside and potassium
C03BB07 Clofenamide and potassium

C03BC Mercurial diuretics[edit | edit source]

C03BC01 Mersalyl

C03BD Xanthine derivatives[edit | edit source]

C03BD01 Theobromine

C03BK Sulfonamides, combinations with other drugs[edit | edit source]

C03BX Other low-ceiling diuretics[edit | edit source]

C03BX03 Cicletanine

C03C High-ceiling diuretics[edit | edit source]

C03CA Sulfonamides, plain[edit | edit source]

C03CA01 Furosemide
C03CA02 Bumetanide
C03CA03 Piretanide
C03CA04 Torasemide

C03CB Sulfonamides and potassium in combination[edit | edit source]

C03CB01 Furosemide and potassium
C03CB02 Bumetanide and potassium

C03CC Aryloxyacetic acid derivatives[edit | edit source]

C03CC01 Etacrynic acid
C03CC02 Tienilic acid

C03CD Pyrazolone derivatives[edit | edit source]

C03CD01 Muzolimine

C03CX Other high-ceiling diuretics[edit | edit source]

C03CX01 Etozolin

C03D Potassium-sparing agents[edit | edit source]

C03DA Aldosterone antagonists[edit | edit source]

C03DA01 Spironolactone
C03DA02 Potassium canrenoate
C03DA03 Canrenone
C03DA04 Eplerenone

C03DB Other potassium-sparing agents[edit | edit source]

C03DB01 Amiloride
C03DB02 Triamterene

C03E Diuretics and potassium-sparing agents in combination[edit | edit source]

C03EA Low-ceiling diuretics and potassium-sparing agents[edit | edit source]

C03EA01 Hydrochlorothiazide and potassium-sparing agents
C03EA02 Trichlormethiazide and potassium-sparing agents
C03EA03 Epitizide and potassium-sparing agents
C03EA04 Altizide and potassium-sparing agents
C03EA05 Mebutizide and potassium-sparing agents
C03EA06 Chlortalidone and potassium-sparing agents
C03EA07 Cyclopenthiazide and potassium-sparing agents
C03EA12 Metolazone and potassium-sparing agents
C03EA13 Bendroflumethiazide and potassium-sparing agents
C03EA14 Butizide and potassium-sparing agents

C03EB High-ceiling diuretics and potassium-sparing agents[edit | edit source]

C03EB01 Furosemide and potassium-sparing agents
C03EB02 Bumetanide and potassium-sparing agents

C03X Other diuretics[edit | edit source]

C03XA Vasopressin antagonists[edit | edit source]

C03XA01 Tolvaptan
C03XA02 Conivaptan

References[edit | edit source]

  1. ↑ ATC (Anatomical Therapeutic Chemical Classification System) – Synopsis Full text, , National Institutes of Health,
  2. ↑ ATC-Klassifikation mit definierten Tagesdosen DDD Full text, , German Institute for Medical Documentation and Information,
  3. ↑ ATC/DDD Index 2022
    code C03 Full text,
    , WHO Collaborating Centre for Drug Statistics Methodology,
  4. ↑ ATCvet Index 2022
    code QC03 Full text,
    , WHO Collaborating Centre for Drug Statistics Methodology,



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