Drugplain

KOSELUGO 5 mg/1

SELUMETINIB · GRANULE · AstraZeneca Pharmaceuticals LP

No Recall History
Plain English

KOSELUGO is a granule containing selumetinib at 5 mg/1, taken oral. Manufactured by AstraZeneca Pharmaceuticals LP.

Key Facts

Brand Name
KOSELUGO
Generic Name
SELUMETINIB
NDC Code (Product)
0310-0635
Manufacturer
AstraZeneca Pharmaceuticals LP
Strength
5 mg/1
Dosage Form
GRANULE
Route
ORAL
Marketing Status
Application #
NDA219943
Marketing Start
09/10/2025

Recall History

No Recall History

Side Effects Reported to FDA

FDA FAERS database · These are reported events, not confirmed side effects

blood creatine phosphokinase increased108 reports
rash108 reports
off label use105 reports
paronychia81 reports
dermatitis acneiform69 reports
diarrhoea68 reports
nausea65 reports
acne64 reports
fatigue63 reports
alopecia54 reports

Full Prescribing Information

Source: FDA Drug Label (SPL)For healthcare professionals

Indications & Usage

1 INDICATIONS AND USAGE KOSELUGO is indicated for the treatment of adult and pediatric patients 1 year of age and older with neurofibromatosis type 1 (NF1) who have symptomatic, inoperable plexiform neurofibromas (PN) [see Dosage and Administration (2) ]. KOSELUGO is a kinase inhibitor indicated for the treatment of adult and pediatric patients 1 year of age and older with neurofibromatosis type 1 (NF1) who have symptomatic, inoperable plexiform neurofibromas (PN). ( 1 )

Dosage & Administration

2 DOSAGE AND ADMINISTRATION • KOSELUGO capsules: The recommended dosage is 25 mg/m 2 , swallowed whole, taken orally twice daily with or without food (see Table 1) . (2.1 , 2.2 ) • KOSELUGO oral granules: The recommended dosage is equivalent to 25 mg/m 2 , sprinkled onto or mixed with soft food and taken orally twice daily (see Table 2). ( 2.1 , 2.2 ) • Moderate hepatic impairment (Child-Pugh B): The recommended dosage is 20 mg/m 2 orally twice daily (see Tables 6 and 7) . ( 2.2 , 2.4 ) • Severe hepatic impairment (Child-Pugh C): The recommended dosage has not been established. ( 2.4 , 8.6 ) • Strong or Moderate CYP3A4 Inhibitors or Fluconazole: If coadministration with strong or moderate CYP3A4 inhibitors or fluconazole cannot be avoided, reduce the dose of KOSELUGO (see Tables 8 and 9) . ( 2.5 ) 2.1 Recommended Dosage The recommended dosage of KOSELUGO capsules ( see Table 1 ) and KOSELUGO oral granules ( see Table 2 ) for adult and pediatric patients 1 year of age and older, based on body surface area, is 25 mg/m 2 orally twice daily, until disease progression or unacceptable toxicity [see Dosage and Administration (2.2)]. Table 1 Recommended Dosage: KOSELUGO Capsules Body Surfa

Contraindications

4 CONTRAINDICATIONS None. None. ( 4 )

Drug Interactions

7 DRUG INTERACTIONS • Strong or Moderate CYP3A4 Inhibitors or Fluconazole : Avoid coadministration of strong or moderate CYP3A4 inhibitors or fluconazole with KOSELUGO. If coadministration cannot be avoided, reduce the dose of KOSELUGO. ( 2.5 , 7.1 ) • Strong or Moderate CYP3A4 Inducers : Avoid concomitant use of strong and moderate CYP3A4 inducers. ( 7.1 ) 7.1 Effect of Other Drugs on KOSELUGO Strong or Moderate CYP3A4 Inhibitors or Fluconazole Management • Avoid concomitant use of strong or moderate CYP3A4 inhibitors or fluconazole with KOSELUGO. If coadministration with strong or moderate CYP3A4 inhibitors or fluconazole cannot be avoided, reduce KOSELUGO dosage [see Dosage Modifications for Drug Interactions (2.5) ]. Clinical Impact • Concomitant use of KOSELUGO with a strong or moderate CYP3A4 inhibitor or fluconazole increased selumetinib plasma concentrations [see Clinical Pharmacology (12.3) ] , which may increase the risk of adverse reactions. Strong or Moderate CYP3A4 Inducers Management • Avoid concomitant use of strong or moderate CYP3A4 inducers with KOSELUGO. Clinical Impact • Concomitant use of KOSELUGO with a strong or moderate CYP3A4 inducer decreased selumetinib p

Adverse Reactions

6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labeling: • Left Ventricular Dysfunction [see Warnings and Precautions (5.1) ] • Ocular Toxicity [see Warnings and Precautions (5.2) ] • Gastrointestinal Toxicity [see Warnings and Precautions (5.3) ] • Skin Toxicity [see Warnings and Precautions (5.4) ] • Increased Creatine Phosphokinase [see Warnings and Precautions (5.5) ] Most common adverse reactions in pediatric patients (≥ 40%) are: vomiting, diarrhea, increased creatine phosphokinase, dry skin, paronychia, nausea, dermatitis acneiform, and pyrexia. ( 6.1 ) Most common adverse reactions in adult patients (≥ 40%) are rash (all), dermatitis acneiform, and diarrhea. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact AstraZeneca 1-800-236-9933 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 NF1 PN pediatric safety pool descri

Frequently Asked Questions

What is KOSELUGO used for?

KOSELUGO contains SELUMETINIB. It is a granule taken oral. Consult your doctor for specific uses.

Is KOSELUGO a controlled substance?

KOSELUGO is not classified as a controlled substance by the DEA.

What is the generic name for KOSELUGO?

The generic name for KOSELUGO is SELUMETINIB. There are no other listed brand versions of SELUMETINIB.

What is the NDC code for KOSELUGO 5 mg/1?

The NDC (National Drug Code) for KOSELUGO 5 mg/1 is 0310-0635, listed by AstraZeneca Pharmaceuticals LP.

Product NDC

0310-0635

Package NDC

0310-0635-60

Not medical advice. Always consult your doctor or pharmacist before making any medication decisions.

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