Standard dosage and correct way of taking ceritinib

Ceritinib is a second-generation oral ALK tyrosine kinase inhibitor, mainly used to treat patients with anaplastic lymphoma kinase (ALK)-positive metastatic non-small cell lung cancer (NSCLC), especially those who are resistant or intolerant to crizotinib. This drug blocks the signal transduction of tumor cells and inhibits the proliferation and spread of cancer cells by highly selectively inhibiting the activity of ALK fusion proteins. It is one of the key targeted drugs in the treatment of ALK-positive NSCLC.

As for the standard dosage, according to current international and domestic guidelines, the recommended dose of ceritinib is 450 mg orally once daily, and it is recommended to take it with low-fat food. This dose was determined on the basis of optimizing the balance between efficacy and side effects. Compared with the original 750mg fasting regimen, it not only has the same efficacy, but can also effectively reduce gastrointestinal adverse reactions, such as nausea, diarrhea, vomiting, etc. The drug is sold in 150 mg capsule form.

The correct way to take medication is crucial to improving the effectiveness of treatment. First of all, ceritinib needs to be taken at a fixed time every day. It is recommended to take it with light food in the morning or evening to avoid high-fat meals that may cause abnormal increases in blood concentration. Grapefruit and its juice should be avoided while taking the drug because they may interfere with the metabolism of liver enzyme CYP3A4, thereby affecting the efficacy or side effects of the drug. Patients should also be careful not to increase or decrease the dosage or take medication intermittently, especially before the effect is obvious, continuous treatment should be maintained.

In terms of medication for special groups, such as those with liver and kidney dysfunction or combined with other drug treatments, the dosage needs to be adjusted appropriately after a doctor's evaluation. At the same time, liver function, electrolytes and electrocardiogramQT interval should be monitored to prevent serious side effects. Once adverse reactions of grade 3 or above occur, the drug can be temporarily stopped or reduced to a maintenance dose of 300 mg, 150 mg, etc. to ensure safety.

Reference materials:https://go.drugbank.com/drugs/DB09063