Crizotinib comes in a box of 60 capsules, taken once daily, and a box usually lasts 60 days. Crizotinib is a multi-target protease inhibitor, mainly used for the treatment of locally advanced regressive lymphoma kinase-positive or metastatic non-small cell lung cancer. The medication must be taken in strict accordance with the doctor’s instructions to avoid serious complications and adverse reactions. Overdose of crizotinib can lead to liver and kidney damage, so patients should not decide the dose of crizotinib on their own. Gastrointestinal reactions such as dyspepsia, nausea and vomiting, and diarrhea may occur when taking Crizotinib. After taking this product, alanine aminotransferase and aspartate aminotransferase may be elevated, which may also lead to electrolyte disorders, and may also cause side effects such as diplopia, blurred vision, photophobia, and visual impairment. Allergy and severe hepatic impairment are contraindicated. Crizotinib needs to be used under the guidance of a medical professional.