How many days can a box of 60 tablets of Larotinib/Larotinib be taken?

Larotrectinib is a highly selective TRK (neurotrophic receptor kinase) inhibitor specifically designed to treat patients with locally advanced or metastatic solid tumors harboring NTRK gene fusions. The drug is an oral targeted therapy, and its standard dose varies depending on the patient's weight.

Generally, for adults and children weighing 10kg or more, the recommended dose is 100mg, taken twice a day, that is, the total daily dose is 200mg. If the patient is taking 100mg capsules or tablets, he needs to take 2 capsules per day. A box of larotrectinib contains 56 100mg pills. At normal dosage, patients take 2 pills a day, so a box of the drug can last about 30 days, that is, one month.

For children weighing less than10kg, the dose usually needs to be adjusted, calculated as a dose of 20mg/m², and the doctor determines the daily dosage based on specific weight and body surface area. If the 50 mg strength is used and the total daily dose is lower, patients may need to take the drug for longer.

In actual clinical application, the patient's medication cycle may also be affected by individual metabolism, adverse reaction tolerance, and treatment response. If the patient experiences serious side effects during treatment, such as liver function damage, nervous system toxicity, etc., the doctor may adjust the dose or suspend the medication, which will affect the use cycle of the drug. In addition, if the patient's disease progresses or becomes resistant to treatment, other targeted drugs may need to be switched.

To sum up, a box of 60 100mg larotrectinib tablets can be taken by patients for 30 days at the standard dose (100mg twice daily). However, the specific number of days of use still needs to be adjusted based on individual factors, doctor's advice, and drug tolerance during treatment to ensure the maximum efficacy and safety of the drug.

Reference materials:https://www.vitrakvi.com/