Efavirenz (Systemic)

Brand Names : Sustiva

Side Effects of This Medicine

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor as soon as possible if any of the following side effects occur:

More common

Depression; skin rash or itching

Less common

Blood in urine; difficult or painful urination; pain in lower back and/or side

Rare

Abdominal pain; changes in vision; blistering; clumsiness or unsteadiness; confusion; convulsions (seizures); cough; dark urine; delusions; double vision; fainting; fast or pounding heartbeat; fever or chills; headache (severe and throbbing); hives; inappropriate behavior; loss of appetite; mood or mental changes (severe); muscle cramps or pain; nausea or vomiting; nerve pain; open sores; pain, tenderness, bluish color, or swelling of leg or foot; rapid weight gain; seeing, hearing, or feeling things that are not there; sense of constant movement of self or surroundings; sores, ulcers, or white spots in mouth or on lips; speech disorder; swelling and/or tenderness in upper abdominal or stomach area; swelling of hands, arms, feet, or legs; thoughts of suicide or attempts at suicide; tightness in chest; tingling, burning, or prickling sensations; tingling, burning, numbness, or pain in the hands, arms, feet, or legs; tremor; troubled breathing; unusual tiredness; weight loss; wheezing; yellow eyes or skin

Other side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. However, check with your doctor if any of the following side effects continue or are bothersome:

More common

Diarrhea; dizziness; drowsiness; fatigue; headache; increased sweating; poor concentration; trouble in sleeping

Less common or rare

Abnormally decreased sensitivity, particularly to touch; agitation or anxiety; belching; change in sense of taste or smell; dry mouth; excessive gas; false sense of well-being; flaking and falling off of skin; flushing; general feeling of discomfort; heartburn; indigestion; joint pain; lack of feeling or emotion; loss of hair; loss of memory; loss of sense of reality; mood changes; nervousness; pain; painful, red, hot or irritated hair follicles; ringing in the ears; stomach discomfort; unusual dreams; weakness

Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.