HIV medications, commonly called antiretroviral therapy, play an important role in controlling HIV and protecting immune function. Although modern treatment is generally effective and better tolerated than many earlier regimens, some medicines can cause serious or potentially life threatening adverse effects.
Antiretroviral therapy includes several medication classes, and individual medicines have different safety profiles. Current HIV treatment guidelines emphasize monitoring for adverse effects while maintaining effective viral suppression. Serious reactions are uncommon with many modern regimens, but recognizing them remains important because some may require prompt medical evaluation or a change in treatment.
Some antiretroviral medicines can affect liver function. Hepatotoxicity may appear through changes in liver enzymes, and in more serious cases, symptoms can include jaundice, abdominal symptoms, unusual fatigue, or loss of appetite. The risk can vary according to the medicine and whether a person also has hepatitis B or hepatitis C.
People taking HIV treatment should discuss new or worsening symptoms with their healthcare professional, particularly when symptoms suggest liver injury. Important considerations include:
Stopping or changing HIV treatment without medical guidance can create treatment problems. Healthcare professionals can determine whether symptoms are medication related and whether an alternative regimen is appropriate.
Certain antiretroviral medicines can affect kidney function. Tenofovir disoproxil fumarate, for example, has been associated with changes such as increased creatinine, protein in the urine, phosphate loss, and other indicators of renal tubular dysfunction. Some medicines may also be associated with kidney stones or urinary complications.
Serious adverse effects can also affect other parts of the body. Depending on the medication, healthcare professionals may monitor for:
The likelihood of a particular adverse effect depends on the specific antiretroviral regimen rather than HIV medications as a single group. Modern guidelines therefore consider the safety profile of individual medicines when selecting or modifying treatment.
Some antiretroviral medicines can cause serious hypersensitivity reactions. Abacavir is a well-known example, with hypersensitivity associated with symptoms such as fever, rash, gastrointestinal symptoms, respiratory symptoms, muscle aches, and other systemic reactions. People with suspected abacavir hypersensitivity should not be rechallenged because the reaction can become more severe.
Severe skin reactions, including Stevens Johnson syndrome and toxic epidermal necrolysis, have also been reported with certain antiretroviral medicines, although these reactions are uncommon. Warning signs that require urgent medical assessment can include:
Prompt assessment is important when a serious drug reaction is suspected. Treatment decisions should be made by a healthcare professional based on the specific medicine and clinical situation.
HIV treatment has changed substantially over time, and current WHO recommendations emphasize effective, optimized antiretroviral regimens while considering safety and individual circumstances. Monitoring for adverse effects remains an important part of HIV care.