This product belongs to the macrolide antibiotics, which is a water-soluble erythromycin lactobionate. It has antibacterial activity against Staphylococcus, various groups of streptococci and Gram-positive bacilli. Neisseria, Haemophilus influenzae, Bordetella pertussis, etc. may also be sensitive to this product. This product also has antibacterial activity against various anaerobic bacteria except Bacteroides fragilis and Fusobacterium; it also has inhibitory effects on Legionella, Campylobacter fetus, some spirochetes, Mycoplasma pneumoniae, Rickettsia and Chlamydia. This product is an antibacterial agent, but it also has a bactericidal effect on some bacteria at high concentrations. This product can pass through the bacterial cell membrane and reversibly bind to the 50S subunit of the bacterial ribosome near the donor site (P site), blocking the transfer RNA (t-RNA) binding to the P site, and also blocking the displacement of the polypeptide chain from the acceptor site (A site) to the P site, thereby inhibiting bacterial protein synthesis. Erythromycin is only effective against bacteria that actively divide.

Extract from the above information

No specific pharmacological effects mentioned

A drug that has both alpha and beta receptor blocking effects. It has weak intrinsic activity and membrane stabilizing effects. The effect of blocking beta receptors is 4-8 times that of blocking alpha receptors; the effect of blocking beta1 receptors is 1/4 of propranolol, and the effect of blocking beta2 receptors is 1/17-1/11 of propranolol. This product has a slightly stronger effect in blocking beta1 receptors than in blocking beta2 receptors. At equivalent doses, its heart rate slowing effect is milder than that of propranolol, and its antihypertensive effect occurs faster. The vasodilation caused by this product blocking alpha receptors is also involved in the antihypertensive and anti-anginal mechanisms. Compared with simple beta receptor blockers, this drug has a stronger antihypertensive effect during standing and exercise tests. In addition, it can increase renal blood flow, while propranolol reduces it.