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It has antibacterial effects on obligate anaerobes (including Gram-negative anaerobic bacilli, Gram-positive anaerobic bacilli, and Gram-positive anaerobic cocci); it has strong activity against protozoa such as Trichomonas vaginalis; it has activity against ameba and Giardia lamblia. The drug's mode of action is to cut off DNA chains and inhibit DNA synthesis, thereby interfering with and interrupting the growth and reproduction of anaerobic microorganisms.

Extract from the above information

This product is a phosphodiesterase inhibitor, which has both positive inotropic and vasodilatory effects. The positive inotropic effect is mainly achieved by inhibiting phosphodiesterase, which increases the concentration of cyclic adenosine monophosphate (CAMP) in myocardial cells, increases intracellular calcium, strengthens myocardial contractility, and increases cardiac output; its vasodilatory effect may be caused by directly acting on small arteries, thereby reducing the heart's front and back loads, reducing left ventricular filling pressure, improving left ventricular function, and increasing cardiac index, but has no significant effect on mean arterial pressure and heart rate.