ATC Group: C03AA03 Hydrochlorothiazide

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 C03AA03 in the ATC hierarchy

Level Code Title
1 C Cardiovascular system
2 C03 Diuretics
3 C03A Low-ceiling diuretics, thiazides
4 C03AA Thiazides, plain
5 C03AA03 Hydrochlorothiazide

Defined daily dose

The DDD is the assumed average maintenance dose per day for a drug used for its main indication in adults. The DDD is a unit of measurement and does not necessarily reflect the recommended or Prescribed Daily Dose. Therapeutic doses for individual patients and patient groups will often differ from the DDD as they will be based on individual characteristics (such as age, weight, ethnic differences, type and severity of disease) and pharmacokinetic considerations.

Code Route Amount Notes
ORAL Oral 25 mg

Active ingredients in C03AA03

Active Ingredient

Hydrochlorothiazide is a diuretic with antihypertensive properties. It acts by inhibiting the renal tubular re-absorption of sodium and chloride ions, which are excreted with an accompanying volume of water. Potassium excretion is also promoted.

Related product monographs

Document Type Information Source  
 DIDRALIN Tablet MPI, EU: SmPC Υπουργείο Υγείας (CY)
 RIDAQ 12.5 mg Tablet MPI, Generic Health Products Regulatory Authority (ZA)
 RIDAQ 25 mg / 50 mg Tablet MPI, Generic Health Products Regulatory Authority (ZA)

Medicines classified under this ATC code globally

Australia (AU)

Brazil (BR)

Cyprus (CY)

Estonia (EE)

France (FR)

Hong Kong (HK)

Israel (IL)

Italy (IT)

Lithuania (LT)

Mexico (MX)

Nigeria (NG)

Romania (RO)

Singapore (SG)

South Africa (ZA)

Spain (ES)

Note the following: The list of brand names is continuously updated, and thus does not include the total of products circulating worldwide.