Rituximab, or rituximab injection, has side effects such as bacterial and viral infections, neutropenia, and is contraindicated in people who are allergic to the product, among others. Rituximab Injection instructions state that this product can cause adverse reactions such as bacterial or viral infections, neutropenia and leukopenia, angioedema, nausea, itchy skin, rash, fever, chills, weakness, headache, sepsis, herpes zoster, fungal infections, infections of unspecified etiology, anemia, thrombocytopenia, hypersensitivity reactions, hyperglycemia, weight loss, and others. Rituximab Injection is contraindicated in persons who are hypersensitive to any of the components of this drug, or to mouse proteins. This product can be used for non-Hodgkin’s lymphoma, chronic lymphocytic leukemia. Patients should use it appropriately under the guidance of a doctor.