Drug name
Last update: Oct 2026MK-8591B (islatravir + ulonivirine)
Developer(s)
Drug information
Not provided
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Small molecule
NRTTI (Nucleoside Reverse Transcriptase Translocation Inhibitor), NNRTI (Non-Nucleoside Reverse Transcriptase Inhibitor) — NRTTI+NNRTI
Active / In Development (Phase 1/2/3)
Not provided
Unknown
Unknown
Therapeutic area(s)
- HIV
- Treatment
Administration route
Oral
Associated long-acting platforms
Oral solid form
Use of drug
- Self-administered
- Administered by a community health worker
- Weekly
Dosage
Not provided
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Related entries
Islatravir (ISL)
ulonivirine (ULO)
Additional information
Developer(s)
Merck / MSD
Drug structure
Scale-up and manufacturing prospects
Not provided
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Excipients & delivery device(s)
Not provided
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No delivery device
Safety, Efficacy and Evidence Summary
Not provided
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