Apotinib 400 Tablet is a tyrosine kinase inhibitor drug used for certain cancer treatments It works by inhibiting specific proteins that promote cancer cell growth Taking the medication consistently and as prescribed is crucial for optimal results Imatinib mesylate can be taken with or without food but its recommended to maintain a consistent daily time Side effects of the treatment may include swelling fatigue rash fever hair loss sleep difficulties joint and muscle pain weight gain night sweats itching gastrointestinal issues blood cell abnormalities liver and renal toxicity Severe or persistent symptoms should be reported to healthcare providers Tumor lysis syndrome can occur particularly in individuals with a high tumor burden so monitoring and preventive measures are recommended Medical attention should be sought for severe or persistent musculoskeletal pain or cramps If a dose is missed patients should take it when remembered but doubling the dose is not advised if the next scheduled dose is near Consultation with a doctor for guidance on managing missed doses is recommended