Lactulose is a synthetic non-absorbable disaccharide. It is not absorbed in the intestines and can be decomposed into lactic acid and acetic acid by colon bacteria, which reduces the intestinal pH value to below 6, thereby blocking the absorption of ammonia and reducing the accumulation and absorption of endotoxins. It restores the patient's blood ammonia to normal and turns from coma to consciousness. Lactulose also has the osmotic activity of disaccharides, which can retain water and electrolytes in the intestinal cavity and produce a hypertonic effect. It is an osmotic laxative. Because it is non-irritating to the intestines, it can be used to treat chronic functional constipation.

Lactulose is a synthetic non-absorbable disaccharide. It is not absorbed in the intestines and can be decomposed into lactic acid and acetic acid by colon bacteria, which reduces the intestinal pH value to below 6, thereby blocking the absorption of ammonia, reducing the accumulation and absorption of endotoxins, restoring the patient's blood ammonia to normal, and turning from coma to consciousness. Lactulose also has the osmotic activity of disaccharides, which can retain water and electrolytes in the intestinal cavity and produce a hypertonic effect. Therefore, it is also an osmotic laxative. Because this product is non-irritating to the intestines, it can be used to treat chronic functional constipation.

This product is a dihydropyridine calcium channel antagonist (calcium channel blocker), which reversibly competes with nitrendipine and/or other calcium channel blockers for dihydropyridine binding sites, can block voltage-dependent Ca2 currents in vascular smooth muscle and cultured rabbit atrial cells, and block K-induced rat portal vein contracture. In vitro studies have shown that this product has a stronger selective inhibitory effect on vascular smooth muscle than on myocardium; negative inotropic effects can be detected in vitro, but this effect has not been observed in whole animals.