If you are planning pregnancy, become pregnant, or think you may be pregnant, immediately discuss with your doctor the benefits and risks of using this medication during pregnancy. Read the Medication Guide provided by your pharmacist before you start taking doxepin and each time you get a refill. This drug may make you dizzy or drowsy or blur your vision. Report any new or worsening symptoms right away. This medication is used to treat major depression, anxiety disorder, insomnia and allergic rhinitis. Tell your doctor right away if any of these rare but seriouspersistent heartburn, mental/mood changes (such as anxiety, agitation, confusion), shaking, severe stomach/abdominal pain. Keep all drugs away from reach of children and pets. Do not take the medicine more often than it is prescribed.