Aceon has a FDA Boxed Warning against the use of the medication during pregnancy as it can harm or cause death to a developing fetus. Before you start taking Aceon, tell your doctor:, About all the prescription and over-the-counter medications you take, as Aceon can interact with certain medications, including potassium supplements, potassium-sparing diuretics, lithium, and nonsteroidal anti-inflammatory drugs (NSAIDs), About your allergies, About your medical history and health conditions, If you are pregnant or breastfeeding, Aceon can cause kidney problems., Aceon can cause symptomatic low blood pressure. Blood pressure should be monitored regularly., Aceon can cause high potassium levels., Aceon can cause abnormal white blood cell counts and bone marrow depression. This occurs more often in patients with kidney problems, lupus, or scleroderma., Aceon can cause a nonproductive cough., Although rare, Aceon can cause liver problems. Seek medical attention immediately if you develop yellowing of the skin or whites of the eyes., Aceon can cause head, neck, and intestinal angioedema., Aceon can cause a dry cough. About all the prescription and over-the-counter medications you take, as Aceon can interact with certain medications, including potassium supplements, potassium-sparing diuretics, lithium, and nonsteroidal anti-inflammatory drugs (NSAIDs), About your allergies, About your medical history and health conditions, If you are pregnant or breastfeeding