This product has a broad-spectrum antibacterial effect, especially high antibacterial activity against aerobic Gram-negative bacilli. It has good antibacterial activity in vitro against the following bacteria: most bacteria of the Enterobacteriaceae family, including Citrobacter, Enterobacter cloacae, Enterobacter aerogenes, Escherichia coli, Klebsiella, Proteus, Salmonella, Shigella, Vibrio, Yersinia, etc. It often has antibacterial activity against multi-drug resistant bacteria. It has high antibacterial activity against penicillin-resistant Neisseria gonorrhoeae, enzyme-producing Haemophilus influenzae and Moraxella. It has antibacterial activity against most strains of Pseudomonas such as Pseudomonas aeruginosa. This product has antibacterial activity against methicillin-sensitive Staphylococcus aureus, and only moderate antibacterial activity against Streptococcus pneumoniae, hemolytic Streptococcus and Enterococcus faecalis. It has good antimicrobial activity against Chlamydia trachomatis, Mycoplasma, Legionella, and also has antibacterial activity against Mycobacterium tuberculosis and atypical mycobacteria. Poor antibacterial activity against anaerobic bacteria. Ofloxacin is a bactericide that acts on the A subunit of bacterial DNA helicase, inhibiting DNA synthesis and replication, leading to bacterial death.

In vitro studies have shown that clindamycin is active against the following microorganisms: Aerobic Gram-positive cocci: Staphylococcus aureus and Staphylococcus epidermidis (both penicillinase-producing and non-penicillinase-producing strains), Streptococci (except Enterococcus faecalis), and Pneumococci. Anaerobic Gram-negative rods: Bacteroides (including Bacteroides fragilis and melanin-producing Bacteroides) and Fusobacterium. Anaerobic Gram-positive non-spore-forming rods: Propionibacterium, Eubacterium, and Actinomyces. Anaerobic and microaerophilic Gram-positive rods: Peptococcus, microaerophilic Streptococcus, and Peptostreptococcus.

Intraperitoneal injection of the drug into mice with cholestatic jaundice induced by 1-naphthyl isothiocyanate can reduce serum aspartate aminotransferase, alanine aminotransferase and serum conjugated bilirubin levels, and alleviate liver cell damage in the model animals.

It can make the endometrium enter a complete secretory phase, thereby preventing the risk of endometrial hyperplasia and cancer caused by estrogen. It can be used for various diseases caused by insufficient endogenous progesterone. It has no estrogen, androgen and adrenal cortex hormone effects, does not produce heat, and has no effect on lipid metabolism.