Lumakras Drug Interactions

Effects of Other Drugs on LUMAKRAS: Acid-Reducing Agents: Coadministration of LUMAKRAS with gastric acid-reducing agents decreased sotorasib concentrations [see PHARMACOLOGY: Pharmacokinetics under Actions], which may reduce the efficacy of sotorasib. Avoid coadministration of LUMAKRAS with proton pump inhibitors (PPIs), H₂ receptor antagonists, and locally acting antacids. If coadministration with an acid-reducing agent cannot be avoided, administer LUMAKRAS 4 hours before or 10 hours after administration of a locally acting antacid [see Coadministration of LUMAKRAS with Acid-Reducing Agents under Dosage & Administration].
Strong CYP3A4 Inducers: Coadministration of LUMAKRAS with a strong CYP3A4 inducer decreased sotorasib concentrations [see PHARMACOLOGY: Pharmacokinetics under Actions], which may reduce the efficacy of sotorasib. Avoid coadministration of LUMAKRAS with strong CYP3A4 inducers.
Effects of LUMAKRAS on Other Drugs: CYP3A4 Substrates: Coadministration of LUMAKRAS with a CYP3A4 substrate decreased its plasma concentrations [see PHARMACOLOGY: Pharmacokinetics under Actions], which may reduce the efficacy of the substrate. Avoid coadministration of LUMAKRAS with CYP3A4 sensitive substrates, for which minimal concentration changes may lead to therapeutic failures of the substrate. If coadministration cannot be avoided, increase the sensitive CYP3A4 substrate dosage in accordance with its Prescribing Information.
P-glycoprotein (P-gp) Substrates: Coadministration of LUMAKRAS with a P-gp substrate (digoxin) increased digoxin plasma concentrations [see PHARMACOLOGY: Pharmacokinetics under Actions], which may increase the adverse reactions of digoxin. Avoid coadministration of LUMAKRAS with P-gp substrates, for which minimal concentration changes may lead to serious toxicities. If coadministration cannot be avoided, decrease the P-gp substrate dosage in accordance with its Prescribing Information.