The main side effects of Elojumab are upper respiratory tract infections, gastroenteritis, nasopharyngitis, allergies, local reactions, and more. Eloxizumab is a drug used to treat familial hypercholesterolemia and is mainly indicated for people over 12 years of age. Relevant clinical studies have found that patients may experience side effects such as upper respiratory tract infection, gastroenteritis, nasopharyngitis are more common, and most of the patients are able to tolerate the drug after active treatment, thus obtaining a better therapeutic effect. In addition, allergic and local reactions may also occur, which may be manifested as urticaria, rash, eczema, injection local bruising, redness, swelling, pain, etc., most of which can be gradually relieved after treatment.