Mytinib 400 Tablet is a tyrosine kinase inhibitor used to treat certain cancers It works by blocking tyrosine kinases proteins that promote cancer cell growth Taking the medication at the same time each day is recommended Common side effects include swelling fatigue rash fever hair loss insomnia joint and muscle pain weight gain night sweats itching gastrointestinal problems blood cell abnormalities liver and kidney toxicity Severe or persistent symptoms should be reported to a healthcare provider Patients with a high tumor burden may be at risk for tumor lysis syndrome which requires monitoring and preventative measures Missed doses should be taken when remembered but doubling the dose is not recommended without consulting a doctor