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.

Pantethine, which is also used in the treatment of hyperlipidemi, is classified as a vitamin in A11HA.

This group comprises high strength preparations (e.g. nicotinic acid tab 500 mg) used as cholesterol reducers. Nicotinic acid or derivatives in low strength preparations (e.g. nicotinic acid tab 50 mg) are classified in C04A - Peripheral vasodilators.
Combinations of nicotinic acid and laropiprant are classified in C10AD52.