How many pills should you take each time you take seputinib/serpatinib?

The usage method of Selpercatinib is not to "fix one or two pills", but to determine the specific dose strictly based on the patient's weight, which is closely related to its precision medicine background. The drug is mainly used for patients with non-small cell lung cancer (NSCLC), thyroid cancer or other rare solid tumors with RET gene fusion, as well as medullary thyroid cancer patients with specific RET mutations. Since targeted drugs need to maintain a stable concentration in the body to exert a sustained inhibitory effect, dose setting must be scientific and individualized.

According to the currently recommended standard dosing regimen, if the patient weighs less than50kg, each dose is 120mg; for patients weighing 50kg and above, each dose is 160mg. The medication is taken orally twice a day, approximately 12 hours apart. Converted to a specific number of pills, it is unrealistic for patients with a small body weight to usually take 1.5 pills at a time for a drug of 80 mg. Therefore, different strengths of 120 mg and 40 mg are often used in clinical practice; for patients with a larger body weight, 160 mg is taken orally at one time, which is equivalent to two 80 mg capsules. Patients need to accurately follow the prescribed dosage under the guidance of a doctor and are not allowed to adjust the amount of medication on their own.

During treatment, if the patient experiences obvious adverse reactions, such as increased liver function indicators, abnormal blood pressure, or gastrointestinal discomfort, the doctor may adjust the dose or even temporarily discontinue the drug based on the specific situation. Patients should not increase or decrease the dosage or change the frequency of taking the medication on their own to avoid affecting the efficacy or increasing the risk of adverse events.

It is worth noting that the administration of seputinib requires long-term persistence until disease progression or intolerable toxicity occurs. Regular medication can not only maintain the stability of blood drug concentration, but also maximize the time for disease control. For patients receiving treatment, it is recommended to set reminders in daily life to avoid missing or repeated doses.

Reference:https://en.wikipedia.org/wiki/Selpercatinib