The Tolerability of Alprostadil Liposome for Injection in Healthy Adult Volunteers

Inclusion Criteria: * Healthy volunteers are at least 20 years of age and no older than 40. * BMI are at least 19.0kg/m2,and no more than 24.0kg/m2.(The weight is greater than or equal to 50kg.)Subjects who are overweight or underweight will not be inclusion. * Subjects with normal heart rate( 60-100 beats per minute) as well as normal blood pressure(systolic blood pressure:90-120 mmHg;diastolic blood pressure:60-90 mmHg). * Subjects with normal medical history,vital signs,physical examination and clinical examination (routine blood,routine urine,blood chemistry,coagulation function and ECG,X-ray,intraocular pressure and so on). * A negative hepatitis B surface antigen,hepatitis C,HIV or syphilis test result. * Subjects with the ability to communicate with investigators.Besides,subjects must be willing to remain at the study center as required per protocal to complete all visit assessments. * Given their signed written informed consent to participate. Exclusion Criteria: * Subjects have brain dysfunction,mental development disorders or speech disorders that unable to communicate with investigators. * Subjects with a history of psychiatric disease or drug dependence in the past 2 years. * Subjects with a medical history about cardiac,liver,renal,digestive system or neurological. * Subjects with the family history of diabetes,the history of pancreatitis,cholelithiasis or asthma. * Subjects significantly abuse alcohol or tobacco. * Drink in 24 hours before post-dosing of study drug. * Subjects who had taken medications within 2 weeks. * Subjects who had suffer from exsanguine or donated blood over 200ml will be excluded. * Subjects who participate in other clinical trials within 3 months will be excluded. * History of hypersensitivity or allergy to any of the study drugs or to drugs of similar chemical classes. * Subjects with a history of fainting. * Subjects who had infected for unknown reason. * Subjects with interstitial pneumonia. * Subjects with glaucoma or intraocular pressure with hyperthyroidism. * Women who were in the mentrual period. * Women who are pregnant or lactating.