Dabigatran ester capsule has the efficacy of inhibiting thrombin and preventing thrombosis, and its side effects can be manifested in the gastrointestinal tract, immune response, blood system and so on. 1. After oral absorption, dabigatran ester capsule can be transformed into dabigatran, which is a competitive and highly efficient thrombin inhibitor, with the effect of inhibiting thrombin activity and preventing thrombosis. 2. Side effects occurring during the administration of dabigatran capsule are mainly manifested in multi-systems, such as gastrointestinal reactions as nausea, vomiting, abdominal pain, abdominal distension, dysphagia and so on. Immune reactions can be manifested as rash, itching, generalized edema, etc.. Blood reactions are anemia, thrombocytopenia, and bleeding. It can also be manifested as abnormal liver function, urinary bleeding, arthralgias, etc. 3. Contraindications: hypersensitivity to the active ingredient or any of the excipients of the product. Patients with severe renal impairment (CrCl<30 ml/min). Clinically significant active bleeding. Lesions or conditions with significant risk of major bleeding, such as current or recent peptic ulcers. Dabigatranate Capsules should be regulated under the guidance of a doctor.