Lovastatin and Posaconazole interaction

Lovastatin and Posaconazole: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.

Major

Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.

What the FDA labels say

From the Lovastatin label · effective 2026-04-03

Major

Concomitant administration with strong CYP3A4 inhibitors (e.g., itraconazole, ketoconazole, posaconazole, voriconazole, HIV protease inhibitors, boceprevir, telaprevir, erythromycin, clarithromycin, telithromycin, nefazodone and cobicistat-containing products) (see WARNINGS , Myopathy/Rhabdomyolysis ).

Contraindicationsby drug classView label on DailyMed
Major

If short-term treatment with strong CYP3A4 inhibitors is unavoidable, therapy with lovastatin should be suspended during the course of treatment (see CONTRAINDICATIONS ; PRECAUTIONS , Drug Interactions ).

Warningsby drug classView label on DailyMed
Major

Table VII: Drug Interactions Associated With Increased Risk of Myopathy/Rhabdomyolysis Interacting Agents Prescribing Recommendations Strong CYP3A4 inhibitors, e.g.: Contraindicated with lovastatin Ketoconazole Itraconazole Posaconazole Voriconazole Erythromycin Clarithromycin Telithromycin HIV protease inhibitors Boceprevir Telaprevir Nefazodone Cobicistat-containing…

Warningsby drug classView label on DailyMed
Moderate

The risk of myopathy/rhabdomyolysis is increased by concomitant use of lovastatin with the following: Strong inhibitors of CYP3A4: Lovastatin, like several other inhibitors of HMG-CoA reductase, is a substrate of cytochrome P450 3A4 (CYP3A4).

Warningsby drug classView label on DailyMed
Moderate

Strong inhibitors of CYP3A4 (e.g., itraconazole, ketoconazole, posaconazole, voriconazole, clarithromycin, telithromycin, HIV protease inhibitors, boceprevir, telaprevir, nefazodone, erythromycin, and cobicistat-containing products), and grapefruit juice increase the risk of myopathy by reducing the elimination of lovastatin (see CONTRAINDICATIONS , WARNINGS…

Drug interactionsby drug classView label on DailyMed

From the Posaconazole (NOXAFIL) label · effective 2026-02-13

Major

Prevention or Management Atorvastatin, Lovastatin, Simvastatin Concomitant use with posaconazole is contraindicated.

Drug interactionsnames LovastatinView label on DailyMed
Major

HMG-CoA Reductase Inhibitors Primarily Metabolized through CYP3A4 ( 4.4 , 7.2 )

Contraindicationsby drug classView label on DailyMed
Major

HMG-CoA Reductase Inhibitors Primarily Metabolized Through CYP3A4 Coadministration with the HMG-CoA reductase inhibitors that are primarily metabolized through CYP3A4 (e.g., atorvastatin, lovastatin, and simvastatin) is contraindicated since increased plasma concentration of these drugs can lead to rhabdomyolysis [see Drug Interactions (7.2) and Clinical Pharmacology…

Contraindicationsby drug classView label on DailyMed
Moderate

Quinidine HMG-CoA Reductase Inhibitors (Statins) that are CYP3A4 Substrates Mechanism and Clinical Effect(s) Concomitant use of posaconazole with simvastatin increased simvastatin plasma concentrations which can lead to rhabdomyolysis [see Clinical Pharmacology (12.3) ].

Drug interactionsby drug classView label on DailyMed

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Not 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.