What side effects may I notice from receiving Doxepin?

Side effects that you should report to your care team as soon as possible:
-Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat
-Irritability, confusion, fast or irregular heartbeat, muscle stiffness, twitching muscles, sweating, high fever, seizure, chills, vomiting, diarrhea, which may be signs of serotonin syndrome
-Sudden eye pain or change in vision such as blurry vision, seeing halos around lights, vision loss
-Thoughts of suicide or self-harm, worsening mood, or feelings of depression
-Trouble passing urine
Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome):
-Change in sex drive or performance
-Constipation
-Dizziness
-Drowsiness
-Dry mouth
-Tremors
-Weight gain

This list may not describe all possible side effects for Doxepin. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.