Azithromycin is an azalide antibiotic, and its mechanism of action is to interfere with the synthesis of proteins (without affecting the synthesis of nucleic acids) by binding to the 50s ribosome subunits of sensitive microorganisms. It is effective against a variety of pathogenic bacteria, including Gram-positive aerobic microorganisms (such as Staphylococcus aureus, Streptococcus pyogenes, etc.), Gram-negative aerobic microorganisms (such as Haemophilus influenzae, Moraxella catarrhalis, Mycoplasma trachomatis, etc.).

Not described in detail

This product is a vitamin drug. Vitamin D2 promotes the absorption of calcium by the brush border of the small intestinal mucosa and the reabsorption of phosphorus by the renal tubules, increases the concentration of blood calcium and phosphorus, and cooperates with parathyroid hormone and calcitonin to promote the release of calcium phosphate from old bones, maintain and regulate the normal concentration of plasma calcium and phosphorus. Vitamin D2 promotes the deposition of calcium in the new bone formation site, deposits citrate in the bone, promotes bone calcification and the function of osteoblasts and the maturation of bone-like tissue. After vitamin D2 is ingested, it is catalyzed by the 25-hydroxylase system in the cell microsomes to produce calcidiol (25-OHD3), which is catalyzed by the 1-hydroxylase system of the renal proximal tubular cells to produce biologically active calcitriol (1-25-(OH)2D3).

Vitamin D2 promotes the absorption of calcium by the brush border of the small intestinal mucosa and the reabsorption of phosphorus by the renal tubules, increases the concentration of blood calcium and phosphorus, cooperates with parathyroid hormone and calcitonin, promotes the release of calcium phosphate from old bones, and maintains and regulates the normal concentration of plasma calcium and phosphorus. Vitamin D2 promotes the deposition of calcium in new bone formation sites, deposits citrate in bones, promotes bone calcification and the maturation of osteoblast function and bone-like tissue. After vitamin D2 is ingested, it is catalyzed by the 25-hydroxylase system in the cell microsomes to produce calcidiol (25-OHD3), which is catalyzed by the 1-hydroxylase system of the renal proximal tubular cells to produce biologically active calcitriol [1-25-(OH)2D3].

Central nervous system (CNS) depressant with sedative and musculoskeletal relaxant effects. May be associated with widespread CNS depression. No direct effects on the contractile mechanism of skeletal muscle, motor end plates, or nerve fibers.