Original source overview
What is HIV?HIV stands for human immunodeficiency virus. It harms your immune system by destroying CD4 cells. These are a type of white blood cells that fight infection. The loss of these cells makes it hard for your body to fight off infections and certain HIV-related cancers.
Without treatment, HIV can gradually destroy the immune system and advance to AIDS. AIDS stands for acquired immunodeficiency syndrome. It is the final stage of infection with HIV. Not everyone with HIV develops AIDS.
What is antiretroviral therapy (ART)?The treatment of HIV with medicines is called antiretroviral therapy (ART). It involves taking a combination of medicines every day. ART is recommended for everyone who has HIV. The medicines do not cure HIV infection, but help people with HIV live longer, healthier lives. They also reduce the risk of spreading the virus to others.
How do HIV medicines work?HIV medicines reduce the amount of HIV (viral load) in your body, which helps by:
• Giving your immune system a chance to recover. Even though there is still some HIV in your body, your immune system should be strong enough to fight off infections and certain HIV-related cancers. • Reducing the risk that you will spread HIV to others.
What are the types of HIV medicines?There are many different types (called classes) of HIV medicines. Some work by blocking or changing enzymes that HIV needs to make copies of itself. This prevents HIV from copying itself, which reduces the amount of HIV in the body. Several types of medicines do this:
• Nucleoside reverse transcriptase inhibitors (NRTIs) block an enzyme called reverse transcriptase • Non-nucleoside reverse transcriptase inhibitors (NNRTIs) bind to and later change reverse transcriptase • Integrase inhibitors, also called integrase strand transfer inhibitors (INSTIs), block an enzyme called integrase • Protease inhibitors (PIs) block an enzyme called protease
Some types of HIV medicines interfere with HIV's ability to infect CD4 immune system cells:
• Fusion inhibitors block HIV from entering the cells • CCR5 antagonists and post-attachment inhibitors block different molecules on the CD4 cells. To infect a cell, HIV has to bind to two types of molecules on the cell's surface. Blocking either of these molecules prevents HIV from entering the cells. • Attachment inhibitors bind to a specific protein on the outer surface of HIV. This prevents HIV from entering the cell.
Pharmacokinetic enhancers are another type of medicine. They are sometimes taken along with certain other HIV medicines. Pharmacokinetic enhancers increase the effectiveness of the other medicine. They work by slowing the breakdown of the other medicine. This allows that medicine to stay in the body longer at a higher concentration.
There are also multidrug combinations, which include a combination of two or more different types of HIV medicines.
When do I need to start taking HIV medicines?It's important to start taking HIV medicines as soon as possible after your diagnosis, especially if you:
• Are pregnant • Have AIDS • Have certain HIV-related illnesses and infections • Have an early HIV infection (the first 6 months after infection with HIV)
What else do I need to know about taking HIV medicines?You and your health care provider will work together to come up with a personal treatment plan. This plan will be based on many factors, including:
• The possible side effects of HIV medicines • Potential drug interactions with any other medicines you take • How many medicines you will need to take every day • Any other health problems you may have
It's important to take your medicines every day, according to the instructions from your provider. If you miss doses or don't follow a regular schedule, your treatment may not work, and the HIV virus may become resistant to the medicines.
HIV medicines can cause side effects. Most of these side effects are manageable, but a few can be serious. Tell your provider about any side effects that you are having. Don't stop taking your medicine without first talking to your provider. There may be steps you can take to help manage the side effects. In some cases, your provider may decide to change your medicines.
What are HIV PrEP and PEP medicines?HIV medicines are not just used for treatment. Some people take them to prevent HIV. PrEP (pre-exposure prophylaxis) is for people who don't already have HIV but are at very high risk of getting it. PEP (post-exposure prophylaxis) is for people who have possibly been exposed to HIV.
NIH: Office of AIDS Research
Encyclopedic background — Wikipedia
The following selected excerpts provide background on “Management of HIV/AIDS”. This related background source does not cover every aspect of the specific topic “HIV Medicines”; population-specific details and decisions should be checked in the original topic source. They are not a substitute for the source overview or current local clinical guidance. Each excerpt below comes from the fixed Wikipedia revision [W1].
Definition and overview [W1]
The management of HIV/AIDS normally includes the use of multiple antiretroviral drugs as a strategy to control HIV infection. There are several classes of antiretroviral agents that act on different stages of the replication cycle of HIV. The use of multiple drugs that act on different viral targets is known as highly active antiretroviral therapy (HAART). HAART decreases the patient's total burden of HIV, maintains function of the immune system, and prevents opportunistic infections that often lead to death. HAART also prevents the transmission of HIV between serodiscordant same-sex and opposite-sex partners so long as the HIV-positive partner maintains an undetectable viral load.
Treatment has been so successful that in many parts of the world, HIV has become a chronic condition in which progression to AIDS is increasingly rare. Anthony Fauci, former head of the United States National Institute of Allergy and Infectious Diseases, has written, "With collective and resolute action now and a steadfast commitment for years to come, an AIDS-free generation is indeed within reach." In the same paper, he noted that an estimated 700,000 lives were saved in 2010 alone by antiretroviral therapy. As another commentary noted, "Rather than dealing with acute and potentially life-threatening complications, clinicians are now confronted with managing a chronic disease that in the absence of a cure will persist for many decades."
The United States Department of Health and Human Services and the World Health Organization (WHO) recommend offering antiretroviral treatment to all patients with HIV. Because of the complexity of selecting and following a regimen, the potential for side effects, and the importance of taking medications regularly to prevent viral resistance, such organizations emphasize the importance of involving patients in therapy choices and recommend analyzing the risks and the potential benefits.
Concerns [W1]
There are several concerns about antiretroviral regimens that should be addressed before initiating:
Intolerance: The drugs can have serious side-effects which can lead to harm as well as keep patients from taking their medications regularly.
Resistance: Not taking medication consistently can lead to low blood levels that foster drug resistance.
Reading this topic in context
Use “HIV Medicines” as a starting point for a focused discussion, rather than treating every statement in the broader encyclopedia article as applying to you. The original source overview and the background excerpts answer different questions: the overview explains the health topic for readers, while the encyclopedia supplies terminology and general context. Keep a record of which questions concern symptoms, a confirmed diagnosis, prevention, or an existing treatment. This helps a healthcare professional address the relevant issue without relying on an internet label. Bring the exact product names, active ingredients, strengths and a complete medicine and supplement list to a pharmacist; the topic label alone does not establish that a product is suitable.
Questions to take to a professional
1. What is my plan for taking every prescribed HIV medicine consistently?
2. Which interactions and monitoring tests should I discuss with my HIV care team?
Evidence, scope and next steps
The health-topic overview is attributed to MedlinePlus / the National Library of Medicine at the original topic link below. Wikipedia [W1] is a secondary background source; its references can support further reading, but their presence is not evidence that WellPrimer has independently reviewed every study. No clinical review, guideline certification or NLM endorsement is claimed. For screening intervals, diagnostic thresholds, pregnancy or child-specific advice and treatment choices, check current guidance in your country with a qualified professional. Do not start, stop or change a prescribed medicine based on encyclopedia excerpts. New or worsening symptoms need appropriate clinical assessment rather than more reading alone.
Attribution and reuse
[W1] Wikipedia contributors, “Management of HIV/AIDS”. Version 1380282946, edited 2026-10-14. Retrieved 2026-10-16. Fixed revision: https://en.wikipedia.org/w/index.php?title=Management_of_HIV/AIDS&oldid=1380282946. Contributor history: https://en.wikipedia.org/w/index.php?title=Management_of_HIV/AIDS&action=history. License: https://creativecommons.org/licenses/by-sa/4.0/ .
The MedlinePlus health-topic summary retains its original attribution. Wikipedia excerpts and the added compilation/commentary are shared under CC BY-SA 4.0; selections, section ordering and editorial reading prompts have been added. No images are reused. This is an educational compilation, not a clinician-reviewed guideline.