Nanjing Hailing Traditional Chinese Medicine Pharmaceutical Art Technical Research Co Lt

To evaluate the safety and efficacy of levornidazole disodium phosphate injection in the treatment of pelvic anaerobic infections at different dosing regimens, compared with levornidazole sodium chloride injection (Unoan®).

1. Whether 15N-levo-ornidazole disodium phosphate can be rapidly converted into 15N-levo-ornidazole after intravenous infusion; and compare the amount of levo-ornidazole in the body after injection of approximately equimolar levo-ornidazole; and evaluate its pharmacokinetic characteristics. 2. Whether 15N-levo-ornidazole disodium phosphate can be rapidly converted into levo-ornidazole after intravenous infusion; and compare the amount of 15N-levo-ornidazole disodium phosphate in the body after injection of approximately equimolar 15N-levo-ornidazole disodium phosphate; and evaluate its pharmacokinetic characteristics.

To study the pharmacokinetics (PK) of levonidazole disodium phosphate for injection after single and multiple administration in healthy Chinese volunteers; To study the tolerated dose of levonidazole disodium phosphate for injection in healthy Chinese volunteers after single administration To evaluate the safety of levonidazole disodium phosphate for injection after single and multiple administration.