- HIV AIDS Myths and Facts Slideshow Pictures
- Take the HIV/AIDS Quiz
- AIDS Retrospective Slideshow Pictures
What is Tybost (cobicistat), and how does it work?
Tybost is a prescription medicine used in adults and children:
- 1 time each day with the Human Immunodeficiency Virus-1 (HIV-1) medicines atazanavir or darunavir, to increase the amount of those medicines in your blood.
- When taken with atazanavir, Tybost is used in adults, and in children who weigh at least 77 pounds (35 kg).
- When taken with darunavir, Tybost is used in adults, and in children who weigh at least 88 pounds (40 kg).
- Tybost is not an antiretroviral medicine and does not treat the HIV-1 virus. You must also take all the antiretroviral HIV-1 medicines prescribed by your healthcare provider even if you take Tybost and atazanavir or darunavir.
- Tybost should not be used if you take darunavir when prescribed by your healthcare provider to be taken 2 times each day, or if you take other HIV-1 protease inhibitor medicines, including fosamprenavir, saquinavir, or tipranavir.
It is not known if Tybost when taken with atazanavir is safe and effective in children who weigh less than 77 pounds (35 kg).
It is not known if Tybost when taken with darunavir is safe and effective in children who weigh less than 88 pounds (40 kg).
What are the side effects of Tybost?
Tybost when taken with certain other medicines can cause new or worse kidney problems, including kidney failure. Your healthcare provider should check your kidneys before you start and while you are taking Tybost.
The most common side effects of Tybost with atazanavir include yellowing of the skin and rash.
Tell your healthcare provider if you have any side effect that bothers you or that does not go away.
These are not all the possible side effects of Tybost. For more information, ask your healthcare provider or pharmacist.
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is the dosage for Tybost?
- Take Tybost exactly as your healthcare provider tells you.
- Do not change your dose or stop taking Tybost without first talking with your healthcare provider.
- Stay under the care of your healthcare provider during treatment with Tybost. See your healthcare provider regularly while taking Tybost.
- Take Tybost 1 time each day at the same time you take atazanavir or darunavir. It is important to take these medicines on a regular dosing schedule.
- Take Tybost with atazanavir or Tybost with darunavir, along with food.
- If you take too much Tybost, call your healthcare provider or go to the nearest hospital emergency room right away.
- Do not run out of Tybost. The virus in your blood may become resistant to the HIV-1 medicine atazanavir or darunavir if Tybost is stopped for even a short time. When your supply starts to run low, get more from your healthcare provider or pharmacy.
What drugs interact with Tybost?
Do not take Tybost combined with atazanavir or darunavir if you also take a medicine that contains:
- alfuzosin hydrochloride
- colchicine, if you have liver or kidney problems
- dronedarone hydrochloride
- ergot-containing medicines:
- dihydroergotamine mesylate
- ergotamine tartrate
- methylergonovine maleate
- midazolam, when taken by mouth
- sildenafil, when used for treating the lung problem pulmonary arterial hypertension (PAH)
- St. John's wort (Hypericum perforatum) or a product that contains St. John's wort
Do not take Tybost with atazanavir if you also take a medicine that contains:
Is Tybost safe to take while pregnant or breastfeeding?
Before you take Tybost, tell your healthcare provider if you:
- are pregnant or plan to become pregnant
- It is not known if Tybost can harm your unborn baby.
- Tybost should not be used during pregnancy because you may not have enough Tybost in your body during pregnancy.
- Tell your healthcare provider if you become pregnant while taking Tybost. Your healthcare provider may prescribe different medicines if you become pregnant while taking Tybost.
- Pregnancy Registry: There is a pregnancy registry for women who take Tybost during pregnancy. The purpose of the registry is to collect information about the health of you and your baby. Talk to your healthcare provider about how you can take part in this registry.
- are breastfeeding or plan to breastfeed. Do not breastfeed if you take Tybost.
- You should not breastfeed if you have HIV-1 because of the risk of passing HIV-1 to your baby.
- It is not known if Tybost can pass to your baby in your breast milk.
Talk to your healthcare provider about the best way to feed your baby.
Latest HIV News
- PrEP HIV Prevention Pills to Be Free for Insured
- People With HIV Have Near-Normal Life Expectancy
- People With HIV Have Much Higher Risk for Suicide
- Living With HIV Raises Sudden Cardiac Death Risk
- Disappointment and Hope From HIV Prevention Trials
- Want More News? Sign Up for MedicineNet Newsletters!
Daily Health News
Tybost (cobicistat) is a prescription medicine used in adults and children with the Human Immunodeficiency Virus-1 (HIV-1) medicines atazanavir or darunavir, to increase the amount of those medicines in your blood.
Multimedia: Slideshows, Images & Quizzes
HIV AIDS: Myths and Facts
What is HIV versus AIDS? What are the symptoms of HIV? Is there an HIV cure? Discover myths and facts about living with HIV/AIDS....
A Timeline of the HIV/AIDS Pandemic
Get a historical overview of the HIV/AIDS pandemic from human contraction to the present through this slideshow of pictures.
What Are HIV & AIDS? Symptoms, Treatment, and Prevention
HIV, or human immunodeficiency virus, causes acquired immunodeficiency syndrome, or AIDS. Learn about HIV positive, being HIV...
HIV & AIDS Quiz: HIV Testing & Symptoms
Now, more than ever, you should know about HIV/AIDS, especially its causes, symptoms treatments, and complications. Take the...
Picture of HIV/AIDS
Acronym for the Human Immunodeficiency Virus, the cause of AIDS (acquired immunodeficiency syndrome). See a picture of HIV/AIDS...
Picture of HIV Lipodystrophy
HIV lipodystrophy describes a constellation of changes in subcutaneous and visceral fat distribution in patients on...
Picture of HIV Lipodystrophy Treatment
HIV lipodystrophy describes a constellation of changes in subcutaneous and visceral fat distribution in patients on...
Picture of HIV-associated Dementia (HAD)
A 40-year-old woman diagnosed with HIV presented with confusion and decline in memory. See a picture of HIV-associated Dementia...
Related Disease Conditions
Hives, also called urticaria, is a raised, itchy area of skin that is usually a sign of an allergic reaction. The allergy may be to food or medications, but usually the cause of the allergy (the allergen) is unknown.
HIV Early Signs and Stages
Human immunodeficiency virus or HIV, destroys important cells that fight disease and infection, which weakens a person's immune system. Some people with HIV don’t have any signs or symptoms. Early signs and symptoms of HIV infection include mononucleosis-like or flu-like symptoms, which include body aches, fever, and headache. Signs and symptoms begin around seven or eight years after HIV infection, which include weight loss, loss of energy and appetite, and swollen lymph nodes. There are 3 stages of HIV.
How Long Can You Live with HIV?
HIV stands for human immunodeficiency virus. If someone has HIV it means that they have been diagnosed with the HIV infection. AIDS (acquired immune deficiency syndrome); however, is the most advanced or final stage of the HIV infection. In the case of an untreated HIV infection, the overall mortality rate is more than 90%. The average time from infection to death is eight to ten years.
How Long Does It Take to See Signs of HIV?
The signs and symptoms of HIV may first appear within two to four weeks of infection. The stage in which the symptoms appear is called the stage of acute HIV infection. The symptoms appear due to the resistance or fight of the immune system against HIV. Early diagnosis and treatment of HIV gets the best results.
What Is the Difference Between HIV-1 and HIV-2?
There are two main types of the human immunodeficiency virus (HIV), HIV-1 and HIV-2. HIV-1 is the most common type of HIV and accounts for 95% of all infections, whereas HIV-2 is relatively uncommon and less infectious. HIV-2 is mainly concentrated in West Africa, is less deadly and progresses more slowly.
How Long Does It Take to Notice Signs of HIV?
HIV (human immunodeficiency virus) is a virus that attacks and damages the cells of the immune system in the body. If left untreated, HIV can lead to the AIDS (acquired immunodeficiency syndrome) disease. AIDS is the final stage of HIV infection which occurs when the body’s immune system is severely damaged because of the virus and unusual infections result. Untreated, HIV infection has a mortality of 90%.
What Are the Four Stages of HIV?
The World Health Organization (WHO) classifies human immunodeficiency virus (HIV) into four stages. Stage 1 (HIV infection): The CD4+ cell count is at least 500 cells per microliter. Stage 2 (HIV infection): The CD4+ cell count is 350 to 499. Stage 3 (advanced HIV disease or AHD): The CD4+ cell count is 200 to 349. Stage 4 (Acquired immunodeficiency syndrome [AIDS]): The CD4+ cell count is less than 200.
HIV and AIDS
Second Source article from WebMD
What Is Usually the First Sign of HIV?
Human immunodeficiency virus (HIV) attacks the cells of the immune system, leading to AIDS and death if left untreated. The first signs of the human immunodeficiency virus infection are flu-like symptoms, which mainly start around two to four weeks after getting HIV. This stage is known as acute HIV infection.
Can HIV be Cured Naturally?
HIV stands for human immunodeficiency virus. If someone has HIV it means that they have been diagnosed with the HIV infection. AIDS (acquired immune deficiency syndrome); however, is the most advanced or final stage of the HIV infection. It is important to get tested for HIV in the early stages of infection to minimize the damage to the immune system. Successful treatment aims to reduce HIV load to a level that is harmless to the body.
Human Immunodeficiency Virus (HIV)
HIV (human immunodeficiency virus) infection left untreated causes AIDS (acquired immunodeficiency syndrome). Still incurable, AIDS describes immune system collapse that opens the way for opportunistic infections and cancers to kill the patient. Early symptoms and signs of HIV infection include flu-like symptoms and fungal infections, but some people may not show any symptoms for years. Highly active antiretroviral therapy (ART) is the standard treatment for HIV infection. These combination drug regimens have made HIV much less deadly, but a cure or vaccine for the pandemic remains out of reach. HIV is usually transmitted through sexual contact or sharing IV drug needles, but can also infect someone through contact with infected blood. Sexual abstinence, safe sex practices, quitting IV drugs (or at least using clean needles), and proper safety equipment by clinicians and first responders can drastically reduce transmission rates for HIV/AIDS.
HIV vs. AIDS
Human immunodeficiency virus causes HIV infection. Acquired immunodeficiency syndrome (AIDS) is a condition that results after HIV has extensively damaged a person's immune system. Risk factors for HIV and AIDS include use of contaminated needles or syringes, unprotected sex, STDs, receiving a blood transfusion prior to 1985 in the United States, having many sex partners, and transmission from a mother to her child.
How Do You Feel When You Have HIV?
About four weeks after contracting HIV (human immunodeficiency virus), you may experience flu-like symptoms including fever, rash, sore throat, nausea, swollen glands and achy joints. You may remain symptomless for some time, however. That doesn't mean you don't need treatment; HIV can quickly progress into AIDS, in which the immune system collapses and you die of a secondary cancer or infection.
HIV/AIDS Testing: Diagnosis and Monitoring
HIV/AIDS diagnosis and monitoring have come a long way from the days when a diagnosis was a death sentence. Crucial parts of the effective treatment regimens developed in the last 40 years are consistent monitoring of the viral load (the amount of virus in the blood), and the immune cell count, which function as biological markers of the disease’s progression. Doctors also must test for drug resistance.
HIV/AIDS Facts: What Is HIV?
HIV (human immunodeficiency virus) is the precursor infection to AIDS (acquired immunodeficiency syndrome). HIV is transmitted through blood and genital secretions; most people get it through sexual contact or sharing needles for illegal IV drug use. HIV can be controlled by a strict drug regimen, but left unchecked, it leads to AIDS. In AIDS, the immune system collapses and the body falls prey to secondary, opportunistic infections and cancers that typically kill the person.
HIV/AIDS Infection Transmission and Prevention
HIV (human immunodeficiency virus) is spread through contact with genital fluids or blood of an infected person. The spread of HIV can occur when these secretions come in contact with tissues such as those lining the vagina, anal area, mouth, eyes (the mucus membranes), or with a break in the skin, such as from a cut or puncture by a needle.
HIV Medications List and Drug Charts
The ultimate goal of HIV treatment is getting the viral load down below detectable levels. As long as those viral load and antibody levels are below a proscribed range, people with HIV can stave off AIDS and other serious symptoms. Antiviral treatment options usually include combinations of two NRTIs, often referred to as "nucs," and a third drug, typically being a boosted protease inhibitor, a NNRTI, often called "non-nucs," and integrase strand transfer inhibitors.
When should you start HIV medication?
Nearly everyone who is infected with HIV (human immunodeficiency virus) should start antiviral medication therapy as soon as they are diagnosed. Older guidelines recommended delaying treatment to help reduce the potential for drug side effects and viral resistance to treatment. Current thinking theorizes that early treatment may preserve more of the body's immune function.
What Are the Side Effects of HIV Medications?
It’s important to know the potential side effects of all the drugs you take to control your HIV infection, as well as potential drug interactions. All of the NNRTIs (nonnucleoside analogue reverse transcriptase inhibitors), for example, are associated with important drug-drug interactions so they must be used with caution in patients on other medications. Learn more about the side effects of the drugs in standard treatment regimens.
HIV Life Expectancy and Long-term Outlook
With early diagnosis and proper treatment, people with HIV can live a healthy and long life. There is no generalized definitive period for which a person with HIV can live.
Treatment & Diagnosis
- HIV-AIDS FAQs
- HIV Treatment, Medications, and Prevention
- HIV: Two Patients Face The Diagnosis
- HIV Treatment - To Interrupt or Not
- Unprotected Sex Between HIV-Infected Partners: What's the Harm?
- HIV Transmission and Progression to AIDS Continues
- Babies On The Breast Of HIV Moms
- How Long Should You Wait to Get an HIV Test?
- What Liver Problems Does HIV Cause?
- Can HIV Cause Kaposi's Sarcoma?
- Do You Need Antiretroviral Therapy for HIV with No Symptoms?
- Does HIV Cause Colorectal Cancer?
- Does Anti-Retroviral Therapy for HIV Cause Diabetes?
- Does Circumcision Prevent HIV and AIDS?
- HIV Infection Facts, History, Causes, and Risk Factors
- HIV Tests, Symptoms, Signs, and Stages of Infection
Medications & Supplements
Prevention & Wellness
- Newly Diagnosed with HIV/AIDS
- Human Immune Deficiency Virus (HIV/AIDS) Specific References
- HIV, AIDS, and Older People
- HIV: The Hidden Epidemic
- HIV and Tuberculosis - Facts
- AIDS & HIV...Maybe Forgotten, Not Gone from the USA!
- FDA Approves a Once Daily Protease Inhibitor for HIV Infection
- HIV: The Truth About, New HIV Test
- HIV/AIDS - World Trends
Health Solutions From Our Sponsors
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.