Lenacapavir and Naldemedine interaction
Lenacapavir and Naldemedine: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Lenacapavir (Sunlenca) label · effective 2026-08-27
Opioid Antagonist: naloxegol ↑ naloxegol Avoid use with SUNLENCA; if unavoidable, decrease the dosage of naloxegol and monitor for adverse reactions.
From the Naldemedine (SYMPROIC) label · effective 2025-07-25
Moderate (e.g., fluconazole, atazanavir, aprepitant, diltiazem, erythromycin) and Strong (e.g., itraconazole, ketoconazole, clarithromycin, ritonavir, saquinavir) CYP3A Inhibitors Clinical Impact Increase in plasma naldemedine concentrations [see Clinical Pharmacology (12.3) ] Intervention Monitor for potential naldemedine-related adverse reactions [see Adverse…
Moderate (e.g., fluconazole) and strong (e.g., itraconazole) CYP3A4 inhibitors : Increased naldemedine concentrations; monitor for adverse reactions ( 7 )
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Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.