Side effects may vary in severity from person to person.
Some people experience few or no side effects.
Stomach cramps, nausea, vomiting and diarrhea often occur, and have been associated with most anti-HIV drugs. In some cases, vomiting and diarrhea may be severe and prolonged enough to interfere with drug absorption and proper nutrition. Several anti-HIV drugs can cause skin rashes. This is most often associated with the non-nucleoside reverse transcriptase inhibitors nevirapine and delavirdine. Stevens-Johnson syndrome is characterized by a severe rash affecting the skin and mucous membranes, blisters, fever, and muscle or joint pains.