| C - Cardiovascular System | This group comprises substances used for the treatment of cardiovascular conditions.
Drugs used for the treatment of hypertension are classified in C02 - Antihypertensives, C03 - Diuretics, C07 - Beta blocking agents, C08 - Calcium channel blockers, and C09 - Agents acting on the renin-angiotensin system. For the classification of combination products of antihypertensives from different ATC groups, the following ranking should be used, from higher to lower precedence: C09, C07, C08, and C03.
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| | C05 - Vasoprotectives | | | No DDDs are established in this group, since most of the drugs in this group are for topical use.
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| | C05A - Agents for Treatment Of Hemorrhoids and Anal Fissures for Topical Use | This group comprises agents for local use, such as suppositories, ointments etc. Preparations used for treatment of perineal trauma are classified here.
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| | C05AA - Corticosteroids | All antihemorrhoidal products, which contain corticosteroids, are classified in this group, including both plain products and combinations with antiinfectives, local anesthetics etc. At each 5th plain level, combinations may occur.
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