What side effects may I notice from receiving Efavirenz?

Side effects that you should report to your doctor or health care professional as soon as possible:

-allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
-changes in behavior like severe depression, strange thoughts, thoughts of suicide, or angry behavior
-hallucinations
-not able to move or speak normally
-redness, blistering, peeling, or loosening of the skin, including inside the mouth
-signs and symptoms of liver injury like dark yellow or brown urine; general ill feeling or flu-like symptoms; light-colored stools; loss of appetite; nausea; right upper belly pain; unusually weak or tired; yellowing of the eyes or skin

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

-diarrhea
-difficulty sleeping, strange dreams
-dizziness
-trouble concentrating
-upset stomach, vomiting
-weight gain around waist, back, or thinning of face, arms, legs

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