Medication Guides are paper handouts that come with many prescription medicines and contain FDA-approved information about serious adverse effects, when certain information is necessary to prevent harm or ensure effectiveness. Nurses must provide this information to patients and inform them that it requires special attention and adherence to the drug regimen, making decisions about side effects. As an example, the Avandia Medication Guide informs patients to tell their prescriber of conditions like heart failure and watch for side effects involving the heart, liver, vision or bones.