Cobicistat
Also known as: Tybost
General information only. Anpheros does not diagnose and does not recommend treatment. Talk to a doctor or pharmacist about your situation. In an emergency, call 112 (or your local emergency number).
In short
In the European Union, cobicistat is indicated as a pharmacokinetic enhancer of atazanavir or darunavir as part of antiretroviral combination therapy in human immunodeficiency virus-1 (HIV-1) infected adults and adolescents aged 12 years and older who meet specific weight requirements. In the United States, it is a CYP3A inhibitor indicated to increase systemic exposure of atazanavir or darunavir in combination with other antiretroviral agents to treat HIV-1 infection in adults and pediatric patients weighing at least 14 kg. The cited source lists cobicistat as having an approved use for human immunodeficiency virus disease without mention of tuberculosis or malaria, clinical stage unspecified.
From: Source: European Medicines Agency (EMA), Tybost — EPAR, 14/02/2023. © European Medicines Agency. · Data provided by the U.S. Food and Drug Administration. · Source: European Medicines Agency (EMA) — EPAR. © European Medicines Agency.
AI-generated summary of the sources cited on this page, checked automatically against them. Not reviewed by a clinician; not medical advice.
Codes
- RxNorm
- 1306284 cobicistat
- EMA
- EMEA/H/C/002572
Official indications
Quoted unchanged from official product information, in English. Listed alphabetically by product, not ranked.
EMA (EU) Tybost
Tybost is indicated as a pharmacokinetic enhancer of atazanavir 300 mg once daily or darunavir 800 mg once daily as part of antiretroviral combination therapy in human immunodeficiency virus-1 (HIV-1) infected adults and adolescents aged 12 years and older: weighing at least 35 kg co?administered with atazanavir or weighing at least 40 kg co?administered with darunavir.
Source: European Medicines Agency (EMA), Tybost — EPAR, 14/02/2023. © European Medicines Agency.
Document date: 14/02/2023 · Official document →
FDA (USA) Tybost
1 INDICATIONS AND USAGE TYBOST is a CYP3A inhibitor indicated to increase systemic exposure of atazanavir or darunavir (once daily dosing regimen) in combination with other antiretroviral agents in the treatment of HIV-1 infection in adults and in pediatric patients weighing at least 14 kg. ( 1.1 ) Limitations of Use : TYBOST is not interchangeable with ritonavir to increase systemic exposure of darunavir 600 mg twice daily, fosamprenavir, saquinavir, or tipranavir due to lack of exposure data. The use of TYBOST is not recommended with darunavir 600 mg twice daily, fosamprenavir, saquinavir, or tipranavir. ( 1.2 , 5.4 ) Complex or unknown mechanisms of drug interactions preclude extrapolation of ritonavir drug interactions to certain TYBOST interactions. TYBOST and ritonavir when administered with either atazanavir or darunavir may result in different drug interactions when used with concomitant medications. ( 1.2 , 5.3 , 7 , 12.3 ) 1.1 Indications Adult Patients: TYBOST is a CYP3A inhibitor indicated to increase systemic exposure of atazanavir or darunavir (once daily dosing regimen) in combination with other antiretroviral agents in the treatment of HIV-1 infection in adults [see Dosage and Administration (2.1) ]. Pediatric Patients: TYBOST is a CYP3A inhibitor indicated to increase systemic exposure of atazanavir or darunavir (once daily dosing regimen) in combination with other antiretroviral agents in the treatment of HIV-1 infection in pediatric patients weighing at least 14 kg [see Dosage and Administration (2.2) , and Drug Interactions (7.3) ]. 1.2 Limitations of Use TYBOST is not interchangeable with ritonavir to increase systemic exposure of darunavir 600 mg twice daily, fosamprenavir, saquinavir, or tipranavir due to lack of exposure data. The use of TYBOST is not recommended with darunavir 600 mg twice daily, fosamprenavir, saquinavir, or tipranavir [see Warnings and Precautions (5.4) ]. Complex or unknown mechanisms of drug interactions preclude extrapolation of ritonavir drug interactions to certain TYBOST interactions. TYBOST and ritonavir when administered with either atazanavir or darunavir may result in different drug interactions when used with concomitant medications [see Warnings and Precautions (5.3) , Drug Interactions (7) , and Clinical Pharmacology (12.3) ].
Data provided by the U.S. Food and Drug Administration.
Document date: 20260210 · Official document →
Related terms in the cited sources
Has an official indication for
- HIV Condition
In alphabetical order.
Other treatments A–Z
What people report
Not enough data yet. Anonymous counts appear here only for groups of at least 20 people who agreed to share them.
External resources
Questions
What is Cobicistat approved for in the European Union?
Tybost is indicated as a pharmacokinetic enhancer of atazanavir 300 mg once daily or darunavir 800 mg once daily as part of antiretroviral combination therapy in human immunodeficiency virus-1 (HIV-1) infected adults and adolescents aged 12 years and older: weighing at least 35 kg co?administered with atazanavir or weighing at least 40 kg co?administered with darunavir. (Source: European Medicines Agency (EMA), Tybost — EPAR, 14/02/2023. © European Medicines Agency.)
Sources and attribution
- Source: European Medicines Agency (EMA) — EPAR. © European Medicines Agency.
- Names other than the official source titles: Anpheros translations and plain-language names, made with AI assistance and checked automatically; the source names are in English.
- Data provided by the U.S. Food and Drug Administration.
- This product uses publicly available data from the U.S. National Library of Medicine (NLM), National Institutes of Health, Department of Health and Human Services; NLM is not responsible for the product and does not endorse or recommend this or any other product.
- Source: European Medicines Agency (EMA), Tybost — EPAR, 14/02/2023. © European Medicines Agency.
Anpheros Search catalog 2026.10.5, published 17 October 2026. About the data →
About this page. This page brings together public information from official sources, each cited where it is used. It is not medical advice, it is not a diagnosis, and it does not tell you which treatment to take.
Treatments. Indications are quoted unchanged from official product information (European Medicines Agency, U.S. Food and Drug Administration). They describe what a medicine is approved for, not whether it is right for you. Approved uses can differ between countries. Always read the package leaflet and follow your doctor's or pharmacist's advice.
What people report. Figures marked "reported by Anpheros users" are anonymous counts from at least 20 people who agreed to share them. They show what people report, not what works, and they are not clinical evidence.
Links between terms. "May be associated with" means the link appears in a cited source. It does not mean you have that condition.
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