This is a single-center, double-blind, single-dose escalation study in healthy volunteers consisting of a 14-day Screening Period, 1-day Predose period, a 2-day Dosing and Evaluation Period, and a 5-day Follow-up Period, with a single Follow-up call scheduled on Day 7 ± 1. Subjects will be confined to the study site for up to 3 days (admitted on Day -1 and discharged on Day 2 or 3, depending on cohort) and will be monitored for adverse events (AEs) and dose limiting toxicities (DLT) during the Dosing, Evaluation and Follow-up Periods. Subjects will also be monitored for concomitant medications and use of rescue medications throughout the study.~Subjects will be allocated 1:4 to receive an infusion of saline control (0.9% saline for injection) or Shenqi Fuzheng Injection(SQ-001) continuously for about 1-4 hours. SQ 001 will be administered by intravenous route at a rate of 3 mL/min to one of four final dosages: Cohort 1 (125 mL/day/person), Cohort 2 (250 mL/day/person), Cohort 3 (500 mL/day/person), and Cohort 4 (625 mL/day/person). Each cohort will be enrolled sequentially. Per cohort, three subjects will be dosed initially on Day 1 and observed for 24 hours. If there are no observed AEs that meet the criteria under Stopping Rules, the remaining 7 subjects/cohort will be dosed. Dose escalation to the next higher dose will be based on the observation of results in safety and degree of AEs from the previous cohort and discussion between the Investigator and Sponsor.~A maximum 17 PK samples will be collected over the course of the study in each cohort. The PK sampling time points will be grouped as (a) pre-infusion; (b) intra-infusion; (c) completion of infusion; and (d) post-infusion. See Table 10 for plasma PK sampling times. The last PK sample will be collected 24 hours after the end of infusion.
This is a single-center, double-blind, single-dose escalation study in healthy volunteers.