TheraRadar
Data updated: May 26, 2026

IDVYNSO (doravirine)

Non-Nucleoside Reverse Transcriptase Inhibitors
Infectious Disease Approved 2026-04-20

IDVYNSO is indicated as a complete two-drug regimen for the treatment of human immunodeficiency virus type 1 (HIV-1) infection in adults to replace the current antiretroviral regimen in those who are virologically-suppressed (HIV-1 RNA less than 50 copies/mL) on a stable antiretroviral regimen with no history of virologic treatment failure and no known substitutions associated with resistance to doravirine [see Microbiology and Clinical Studies ].

Source: FDA Label • Merck
1
Indication
--
Phase 3 Trials
0
Years on Market

Details

Status
Prescription
First Approved
2026-04-20
Patent Cliff
2031

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Routes
ORAL
Dosage Forms
TABLET

Companies

Active Ingredient: DORAVIRINE , ISLATRAVIR

IDVYNSO Approval History

Original
New Indication
New Form
Label Update
1 FDA actions from 2026 to 2026
Apr 2026 ORIGINAL
Update · Type 1 - New Molecular Entity and Type 4 - New Combination

What IDVYNSO Treats

1 FDA approvals

Originally approved for its first indication in 2026 .

  • Other (1)
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Clinical Trial Registry

15 trials
Trial Sponsor ID Phase Status Title
NCT04375800 1439-066 MK-1439-066, 2019-003955-13 Ph 2 recruiting Doravirine (DOR) in Human Immunodeficiency Virus (HIV)-Infected Children Aged 4 Weeks to <12 Years and <45 kg (MK-1439-066)
NCT04900974 results posted 20-0052 Ph 1 completed Single Dose Pharmacokinetics of Doravirine in HIV-infected Pregnant Women
NCT05630638 DoraDO UoL001707 Ph 4 recruiting Doravirine Dose Optimisation in Pregnancy
NCT02275780 DRIVE-FORWARD results posted 1439-018 MK-1439-018, 2014-001127-69 Ph 3 completed Safety and Efficacy of Doravirine (MK-1439) in Participants With Human Immunodeficiency Virus 1 (HIV-1) (MK-1439-018)
NCT03894124 results posted CRF001 2019-000978-33 Ph 1 completed Pharmacokinetics of Plasma Doravirine Once Daily Over 72 Hours Following Drug Intake Cessation in Healthy Volunteers
NCT04689737 results posted Dora-HD Ph 4 completed Removal of Doravirine by Hemodialysis in HIV-Infected Patients With End-stage Renal Disease (ESRD)
NCT04892654 DORDOL CW004 2020-003928-17 Ph 3 recruiting Efficacy of Doravirine + Dolutegravir Dual Therapy in the Context of Antiretroviral Therapy Switch
NCT03272347 results posted 8591-011 2017-000437-32 Ph 2 completed Islatravir (MK-8591) With Doravirine and Lamivudine in Participants Infected With Human Immunodeficiency Virus Type 1 (MK-8591-011)
NCT04097925 results posted DORAGEN 2018-003921-27 Ph 2 completed Doravirine Concentrations and Antiviral Activity in Genital Fluids in HIV-1 Infected Individuals
NCT04079452 results posted DORACeNeS 2018-003915-24 Ph 3 completed Doravirine Concentrations and Antiviral Activity in Cerebrospinal Fluid in HIV-1 Infected Individuals
NCT01632345 results posted 1439-007 MK-1439-007, 2012-001573-93 Ph 2 completed A Dose-Ranging Study to Compare Doravirine (MK-1439) Plus TRUVADA® Versus Efavirenz Plus TRUVADA® in Human Immunodeficiency Virus (HIV)-1 Infected Participants (MK-1439-007)
NCT02715700 results posted 1439-045 MK-1439-045 Ph 1 completed Effects of Doravirine (MK-1439) on Methadone Pharmacokinetics in Methadone-Maintained Participants (MK-1439-045)
NCT01466985 results posted 1439-005 2011-003508-19, MK-1439-005 Ph 1 completed A Study of Doravirine (MK-1439) in Human Immunodeficiency Virus Type 1 (HIV-1)-Infected Participants (MK-1439-005)
NCT02641067 results posted 1439-051 MK-1439-051 Ph 1 completed A Study Evaluating the Pharmacokinetics of Doravirine (MK-1439) in Participants With Severe Renal Impairment (MK-1439-051)
NCT02089659 results posted 1439-019 MK-1439-019 Ph 1 completed A Study to Investigate the Influence of Hepatic Insufficiency on the Pharmacokinetics of Doravirine (MK-1439) (MK-1439-019)
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Active Pipeline

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Ongoing clinical trials by development phase

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

IDVYNSO FDA Label Details

Indications & Usage

FDA Label (PDF)

IDVYNSO™ is indicated as a complete two-drug regimen for the treatment of human immunodeficiency virus type 1 (HIV-1) infection in adults to replace the current antiretroviral regimen in those who are virologically-suppressed (HIV-1 RNA less than 50 copies/mL) on a stable antiretroviral regimen with no history of virologic treatment failure and no known substitutions associated with resistance to doravirine [see Microbiology and Clinical Studies ]. IDVYNSO is a two-drug combination of doravirine, a HIV-1 non-nucleoside reverse transcriptase inhibitor (NNRTI), and islatravir, a nucleoside analo...

IDVYNSO Patents & Exclusivity

Exclusivity: Apr 2031

Exclusivity

NCE Until Apr 2031
Source: FDA Orange Book

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.