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What the FDA labels say about taking them together

Darunavir and lomitapide

Darunavir's FDA label of August 29, 2025 names lomitapide in its contraindications section; the lomitapide label PlainMeds reads does not name darunavir. The darunavir label: “Co-administration is contraindicated due to potential for markedly increased transaminases.”

Check it at the source: the darunavir FDA label on DailyMed (effective August 29, 2025, Janssen Products LP); the lomitapide FDA label on DailyMed (effective March 30, 2026, Chiesi USA, Inc.).

What does the darunavir label say about lomitapide?

Darunavir label, contraindications

St. John's wort ( Hypericum perforatum ) Hepatitis C direct acting antiviral: elbasvir/grazoprevir Lipid modifying agents: lomitapide, lovastatin, simvastatin Opioid Antagonist: naloxegol PDE-5 inhibitor: sildenafil when used for treatment of pulmonary arterial hypertension Sedatives/hypnotics: orally administered midazolam, triazolam Co-administration of PREZISTA/ritonavir is contraindicated with drugs that are highly dependent on CYP3A for clearance and for which elevated plasma concentrations are associated with serious and/or life-threatening events (narrow therapeutic index).

Darunavir label, drug interactions

Concomitant Drug Class Drug Name Examples: lomitapide; Effect on Concentration of Darunavir Or Concomitant Drug: ↑ lomitapide; Clinical Comment: Co-administration is contraindicated due to potential for markedly increased transaminases.

Source: FDA drug label (PREZISTA), Janssen Products LP, effective August 29, 2025 (SPL set 814301f9-c990-46a5-b481-2879a521a16f), via openFDA; the full label on DailyMed

What does the lomitapide label say about darunavir?

Lomitapide's label (effective March 30, 2026) does not name darunavir in these sections. A label lists what its studies and reports found; it is not a complete list.

Source: FDA drug label (Juxtapid), Chiesi USA, Inc., effective March 30, 2026 (SPL set 61a0be9d-ee58-43e0-b5cb-141011835081), via openFDA; the full label on DailyMed

These are the labels' own sentences. PlainMeds does not grade interactions; a pharmacist or prescriber can say what they mean for one person's medicines.

Both medicines on the record

13Darunavir generic labelers
0Lomitapide generic labelers
DarunavirLomitapide
Labeled forHIVHigh cholesterol
Boxed warningNoYes
Pharmacy cost (NADAC)$1.16 per tablet 600 mg tabletn/a
Shortage nowNo current entryNo current entry

Source: FDA NDC Directory, CMS NADAC of October 7, 2026 and the FDA Drug Shortage Database (FDA files October 8, 2026)

What next?