Drug Uses Aceon is used to treat high blood pressure (hypertension) and to prevent heart attack in people with coronary artery disease. How to use The usual starting dosage is 4 milligrams daily, taken as a single dose or divided into two smaller doses. Your doctor may increase the dosage until your blood pressure is under control, up to a maximum of 16 milligrams per day. Drug Class and Mechanism Aceon is an angiotensin-converting enzyme (ACE) inhibitor. It works by blocking ACE, an enzyme involved in narrowing blood vessels and causing sodium and fluid retention by the kidneys. This causes blood vessels to relax, allowing blood to flow more freely and at a lower pressure, and increasing the hearts ability to pump blood in some types of heart failure. Missed Dose Take the missed dose as soon as you remember. However, if it is too late or almost time for your next dose, skip the missed dose and take only your next regularly scheduled dose. Storage Store at room temperature, protected from moisture.