Lazertinib: uses, dosing, side effects & brands
Lazertinib is a kinase inhibitor sold in the U.S. under one brand, for lung neoplasms. Below: what the FDA label says, every product that contains it, what the pills look like, and its recall record.
Key facts
- Drug class
- Kinase Inhibitor
- Treats
- Lung Neoplasms
- Available as
- Tablet
- Sold as
- Lazcluze
- Prescription?
- Prescription only
- Generic available?
- Not in our catalog
How lazertinib is dosed
From the FDA label for Lazcluze (application NDA219008). Other lazertinib products — different forms, different strengths — are dosed differently. Follow the label for the one you were prescribed.
The recommended dosage of LAZCLUZE is 240 mg orally once daily with or without food, given in combination with amivantamab. ( 2.2 ) Continue treatment until disease progression or unacceptable toxicity. ( 2.2 ) Administer LAZCLUZE any time prior to amivantamab when given on the same day. ( 2.2 ) Refer to the amivantamab prescribing information for recommended amivantamab dosing information. ( 2.2 ) Administer prophylactic and concomitant medications to reduce the risk of dermatologic adverse reactions. ( 2.3 ) Administer anticoagulant prophylaxis to reduce the risk of venous thromboembolic events (VTE) for the first four months of treatment. ( 2.3 ) 2.1 Patient Selection Select patients for the first-line treatment of NSCLC with LAZCLUZE, in combination with amivantamab, based on the presence of EGFR exon 19 deletions or exon 21 L858R substitution mutations in tumor or plasma specimens [see Clinical Studies (14) ] . If these mutations are not detected in a plasma specimen, test tumor tissue. Information on FDA-approved tests is available at: http://www.fda.gov/CompanionDiagnostics . 2.2 Recommended Dosage and Administration Recommended Dosage and Administration The recommended dosage of LAZCLUZE is 240 mg orally once daily administered in combination with amivantamab, with or without food. Swallow LAZCLUZE tablets whole. Do not crush, split, or chew. Continue treatment until…
Lazertinib side effects
The following adverse reactions are discussed elsewhere in the labeling: Venous Thromboembolic Events [see Warnings and Precautions (5.1) ] Interstitial Lung Disease/Pneumonitis [see Warnings and Precautions (5.2) ] Dermatologic Adverse Reactions [see Warnings and Precautions (5.3) ] Hepatotoxicity [see Warnings and Precautions (5.4) ] Ocular Toxicity [see Warnings and Precautions (5.5) ] LAZCLUZE in Combination with Amivantamab The most common adverse reactions (≥ 20%) were rash, nail toxicity, infusion-related reaction (amivantamab), musculoskeletal pain, edema, stomatitis, VTE, paresthesia, fatigue, diarrhea, constipation, COVID-19, hemorrhage, dry skin, decreased appetite, pruritus, and nausea. ( 6.1 ) The most common Grade 3 or 4 laboratory abnormalities (≥ 2%) were decreased albumin, decreased sodium, increased ALT, decreased potassium, decreased hemoglobin, increased AST, increased GGT, and increased magnesium. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Janssen Biotech, Inc. at 1-800-526-7736 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. The data described in…
Who shouldn’t take lazertinib
None. None. ( 4 )
Lazertinib drug interactions
Strong and moderate CYP3A4 inducers: Avoid concomitant use. ( 7.1 ) 7.1 Effect of Other Drugs on LAZCLUZE CYP3A4 Inducers Avoid concomitant use of LAZCLUZE with strong and moderate CYP3A4 inducers. Consider an alternate concomitant medication with no potential to induce CYP3A4. Lazertinib is a CYP3A4 substrate. Concomitant use with a strong or moderate CYP3A4 inducer decreased lazertinib concentrations [see Clinical Pharmacology (12.3) ] , which may reduce the efficacy of lazertinib. 7.2 Effect of LAZCLUZE on Other Drugs Certain CYP3A4 Substrates Monitor for adverse reactions associated with a CYP3A4 substrate where minimal concentration changes may lead to serious adverse reactions, as recommended in the approved product labeling for the CYP3A4 substrate. Lazertinib is a weak CYP3A4 inhibitor. Concomitant use of LAZCLUZE increased concentrations of CYP3A4 substrates [see Clinical Pharmacology (12.3) ] , which may increase the risk of adverse reactions related to these substrates. Certain BCRP Substrates Monitor for adverse reactions associated with a BCRP substrate where minimal concentration changes may lead to serious adverse reactions, as recommended in the approved product labeling for the BCRP substrate. Lazertinib is a BCRP inhibitor. Concomitant use of LAZCLUZE increased concentrations of BCRP substrates [see Clinical Pharmacology (12.3) ], which may increase the risk of adverse reactions related to these substrates.
Every lazertinib product we track (1)
Same active ingredient — different manufacturer, form, price and FDA recall record. That last one is what our independent score measures.
Only one: Lazcluze.
Can you crush or split lazertinib?
At least one lazertinibproduct is labelled to be swallowed whole — crushing an extended-release tablet releases the whole day’s dose at once. Which applies depends on the form you were given.
What each lazertinib label says about crushing, splitting and chewingWhat people report to the FDA about lazertinib
The FDA Adverse Event Reporting System (FAERS) collects reports from patients and clinicians. It holds 1 reports naming lazertinib, and the FDA flagged 100% of those reports as serious. The effects reported most often — leaving out reports about overdose, misuse or the condition being treated, which dominate the raw list for common medicines:
- deep vein thrombosis1 reports
- pneumonitis1 reports
Read these as a signal, not a rate. A report does not mean lazertinib caused the effect — anyone can file one, and many describe people taking several medicines for several conditions. Crucially there is no denominator: FAERS does not record how many people took the drug, so these counts cannot be turned into “X% of patients” — a bigger number often just means a more widely used or more talked-about drug. Duplicates exist, and publicity drives reporting. For what is actually established, read the FDA label section above.
Source: openFDA drug/event (FAERS), retrieved July 25, 2026.
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Frequently asked questions
What is lazertinib?
Lazcluze (Lazertinib Mesylate) is a kinase inhibitor used to treat Lung Neoplasms.
What kind of drug is lazertinib?
The FDA classifies lazertinib as a kinase inhibitor. Kinase inhibitors block protein kinases, the enzymes that relay 'grow and divide' signals inside cells. By shutting down the overactive kinase signals that a tumor depends on, they help slow or stop cancer cells from multiplying. If you are checking whether it is safe to combine with something else, the class is what matters — two drugs from the same class usually should not be stacked.
Can you take lazertinib with other medicines?
It depends on the medicine. We check it against the FDA labels rather than guessing: our interaction checker searches each drug's own label for the other and quotes what it says, naming the section it came from. Run lazertinib against whatever else you take — and remember that a label not naming a drug is not the same as that combination being safe.
What forms does lazertinib come in?
Across the brands we track, lazertinib is currently marketed as tablet, per the FDA's National Drug Code Directory. Each form is dosed differently — follow the label for the exact product you were prescribed.
Is there a generic lazertinib?
We do not currently list a generic-labelled lazertinib product. That does not always mean none exists — it means none appears under a generic name in the FDA data we track. Ask your pharmacist.
Cite this page
- APA
- pharmaranks. (2026, July 24). Lazertinib: uses, dosing, side effects & brands. https://pharmaranks.com/drugs/lazertinib
- MLA
- “Lazertinib: uses, dosing, side effects & brands.” pharmaranks, 24 July 2026, https://pharmaranks.com/drugs/lazertinib.
We summarise public FDA and NIH sources — for a clinical claim, cite the primary source we link to as well.
Sources: FDA openFDA drug label, National Drug Code Directory, and Enforcement (recall) database. This page reproduces public FDA data and is not medical advice. Dosing is set by your prescriber.
Read the full FDA label for lazertinib on DailyMed (NIH) ↗.