Adverse effects of low molecular weight heparin sodium

　　Bleeding: skin bleeding reactions may occur in different parts, such as skin mucosal bleeding, gingival bleeding, etc

　　Severe thrombocytopenia occurs occasionally

　　3. Local or systemic allergic reactions

　　4. Skin stasis at the injection site was observed in some patients, and hematoma and skin necrosis occurred at the injection site in rare cases of ecchymosis

　　Severe rash at injection site is rare