Effect of Oral D-mannose Tablets on Pharmacokinetics of Dabigatranate in Healthy Adults

Inclusion Criteria: 1. With full capacity for civil conduct, the age of healthy male subjects is ≥18 years old and ≤45 years old 2. Male weight ≥50 kg; body mass index (BMI) within the range of 19.0\~27.0 (including upper and lower limits) 3. Creatinine clearance rate (CRCL: calculated by Cock croft-Gault equation, adult healthy subjects should have CRCL≥90mL/min Exclusion Criteria: 1. History of fainting of needles and blood. 2. Diseases affecting intestinal P-glycoprotein: severe diarrhea (excretion more than 3 times a day with watery stool characteristics), Crohn's disease, ulcerative colitis, irritable bowel syndrome, diverticulitis, difficult Identify Clostridium infection (recurrent) or Helicobacter pylori infection. 3. Diabetes mellitus; Impaired fasting glucose (IFG); Impaired glucose tolerance (IGT); Oral hypoglycemic agents (including the use of hypoglycemic agents for weight loss purposes). 4. Diseases or conditions with significant risk of major bleeding, such as current or recent peptic ulcer, malignant neoplasms with high bleeding risk, recent brain or spinal cord injury, recent brain, spinal cord, or eye surgery, recent intracranial hemorrhage, known or suspected Esophageal varices, arteriovenous malformations, vascular aneurysms or major intraspinal or intracranial vascular abnormalities. 5. Clinically significant active bleeding. 6. Taking anticoagulants such as unfractionated heparin (UFH), low molecular weight heparin (LMWH) and heparin derivatives (fondaparinux sodium), vitamin K antagonists, rivaroxaban or other direct thrombin inhibitors (recombinant hirudin, bivalirudin); thrombolytic drugs, or current use of antiplatelet aggregation drugs such as GPⅡb/Ⅲa receptor antagonists, ticlopidine, prasugrel, dextran, sulfinpyrazone, aspirin, etc. 7. Use of drugs that may affect the activity of intestinal p-glycoprotein within 1 week before the trial: (1) potent p-glycoprotein inhibitors: amiodarone, verapamil, diltiazem, quinidine, dronedarone, tacrolimus, cyclosporine, protease inhibitors(indinavir, nelfinavir, saquinavir, lopinavir), macrolide antibiotics (erythromycin, clarithromycin, telithromycin, chloramphenicol), azole antifungal drugs (ketoconazole, itraconazole, Posaconazole, voriconazole, fluconazole, miconazole), nefazodone, cobicistat, cimetidine, ciprofloxacin, cyclosporin, fluvoxamine, imatinib, St. John's Wort, ranolazine; (2) Potent P-glycoprotein inducers: rifampicin, carbamazepine, phenytoin, phenobarbital, antiandrogens(enzalutamide, apalutamide), phenobarbital, dexamethasone. 8. Those who have a history of smoking and drinking in the past and who do not agree with the prohibition of smoking and drinking during the trial period: smokers (the average daily cigarettes smoked more than 5 cigarettes within one month before the test); alcoholism: (the average daily drinking within one month before the test≥100mL high-quality liquor/200mL wine / 600mL beer). 9. History of gastrointestinal surgery such as gallbladder or appendectomy, bariatric surgery, etc. within the past 5 years. 10. Positive virological test (human immunodeficiency virus antibody (HIV-Ab), syphilis serological test, hepatitis B virus surface antigen (HBsAg) or hepatitis C virus antibody (HCV-Ab)) within 6 months before screening. 11. Those who have participated in clinical trials of any dug or medial device within 6 months before screening (in the case of drug clinical trials those who participated in the previous clinical trial before screening have more than 5 half-lives). 12. Subjects who are considered by the investigator to have any factors that are not suitable for participating in this trial.