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

Visiting/delivery address:
Sandakerveien 24C
Bygg C
0473 Oslo

Tel:  +47 21 07 81 60

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See also C03 - Diuretics, C07 - Beta blocking agents, C08 - Calcium channel blockers and C09 - Agents acting on the renin-angiotensin system.
Antihypertensives are mainly classified at 3rd levels according to the mechanism of action. Most headings are self-explanatory:
C02A Antiadrenergic agents, centrally acting
C02B Antiadrenergic agents, ganglion-blocking
C02C Antiadrenergic agents, peripherally acting
C02D Arteriolar smooth muscle, agents acting on
C02K Other antihypertensives
C02L Antihypertensives and diuretics in combination
C02N Combinations of antihypertensives in ATC gr. C02

The oral DDDs are based on the average doses needed to reduce the blood pressure to a normal level in patients with mild-moderate hypertension.
Parenteral DDDs are based on dosages used for the treatment of hypertensive crises and are based on the content of the active ingredient pr. vial (ampoule).


This group comprises all antihypertensives which cannot be classified in groups C02A-D, C02L, C02N, C03 - Diuretics, C07 - Beta blocking agents, C08 - Calcium channel blockers or C09 - Agents acting on the renin-angiotensin system.

C02KX Antihypertensives for pulmonary arterial hypertension

All agents classified in this group are for treatment of pulmonary arterial hypertension (PAH).
Other agents used for treatment of PAH such as phosphodiesterase inhibitors (e.g. sildenafil) or prostaglandins (e.g. epoprostenol) are classified in G04BE and in B01AC respectively.

The DDDs are based on treatment of pulmonary arterial hypertension.

    ATC code  Name  DDD  U Adm.R Note
    C02KX02 ambrisentan 7.5 mg 

List of abbreviations

Last updated: 2021-12-14