Three panels(100mg, 200mg, 400mg), each consisting of eight participants (The number of individual subjects in each group was not less than 1/3 of the total number).Participants begin to receive the first dose of SPH3127 100mg. Then Participants begin to receive the second dose of SPH3127 200mg,after the researchers confirmed that the 100mg dose group was safe and well tolerated.Then the third dose of SPH3127 400mg must wait for the result of the second dose's safety and tolerability. If the subjects during escalating dose to the biggest tolerate dose group were not well tolerated, the study must adjust the maximum dose group and fall to a low dose group to conduct another test.
