ACE Inhibitors: Information for patients about the primary drug treatment for heart failure.MayoClinic.com - Angiotensin-Converting Enzyme (ACE) Inhibitors (Systemic): Information about the uses and precautions for this class of medications, with US and Canadian generic and brand names.MedicineNet: ACE Inhibitors: Overview of this group of medications, including specific generic and brand names, how they work, side effects, and potential drug interactions.MedlinePlus: Angiotensin-Converting Enzyme (ACE) Inhibitors: A patient guide to these types of medications.