What are the correct ways to take the targeted drug osimertinib?

Osimertinib/Tagressa is the first-line standard treatment drug for EGFR mutation-positive non-small cell lung cancer (NSCLC). The standardization of its administration directly affects the therapeutic effect and safety. Whether in postoperative adjuvant treatment for early-stage lung cancer or in the control of late-stage metastatic lung cancer, patients should master the correct way of taking medication to ensure stable blood drug concentration, delay drug resistance, and improve quality of life.

The standard dose of osimertinib is 80 mg orally administered daily This dose is suitable for most indications, including patients with advanced EGFR-mutated non-small cell lung cancer and postoperative adjuvant therapy. The medicine can be taken with food or on an empty stomach, and no special diet is required, which brings greater convenience to patients in daily medication. However, it should be noted that medication should not be taken immediately after eating high-fat or high-sugar foods to avoid irritation to the gastrointestinal system.

Tablets should be swallowed whole and should not be chewed, crushed or dissolved in water. If the patient accidentally takes a dose, misses a dose, or vomits, he or she should consult a doctor about taking a replacement dose. Under normal circumstances, if the next dose is more than 12 hours away, you can take it again in time; if the time is close, it is recommended to skip it once and do not increase the dose at will to "compensate". This regularity is very important because osimertinib inhibits tumor signaling pathways by maintaining stable plasma concentrations, and ignoring dosage rules may affect efficacy or even cause toxic reactions.

During medication, patients should pay special attention to drug-drug interactions. Osimertinib is mainly degraded through the hepatic metabolic enzyme CYP3A4 pathway. If you take drugs that affect the activity of this enzyme at the same time, such as certain anti-epileptic drugs, antifungal drugs or antibiotics, it may lead to changes in blood drug concentration, thus affecting the efficacy or risk of side effects. Therefore, it is important to inform your doctor before adding new medications or supplements.

Reference materials:https://go.drugbank.com/drugs/DB09330