Tetracycline antibiotics. This product is a broad-spectrum antibacterial agent with bactericidal effects at high concentrations. Rickettsia, Mycoplasma, Chlamydia, atypical mycobacteria, and spirochetes are also sensitive to this product. This product is more effective against Gram-positive bacteria than Gram-negative bacteria, but Enterococcus is resistant to it. Others such as Actinomycetes, Bacillus anthracis, Listeria monocytogenes, Clostridium, Nocardia, Vibrio, Brucella, Campylobacter, and Yersinia are sensitive to this product. This product has certain antibacterial activity against Neisseria gonorrhoeae, but penicillin-resistant Neisseria gonorrhoeae is also resistant to doxycycline. Due to the widespread use of tetracyclines over the years, common clinical pathogens have become seriously resistant to this product, including Gram-positive bacteria such as Staphylococcus and most Gram-negative bacilli.

Dilate coronary and peripheral blood vessels, reduce peripheral resistance, slow heart rate, reduce and lower myocardial oxygen consumption, increase myocardial perfusion, increase cerebral blood flow, improve myocardial and cerebral ischemia; inhibit platelet aggregation, reduce blood viscosity, inhibit thrombosis; lower blood lipids, resist fatigue, tolerate hypoxia, improve and enhance macrophage function

It reduces the content of malondialdehyde (MDA) in rabbits with chronic intraocular hypertension, increases the activity of superoxide dismutase (SOD), and reduces the permeability of retinal blood vessels; it improves the grayscale of retinal ganglion cells and the density of active ganglion cells with high cytochrome oxidase activity in rats with acute intraocular hypertension.

It reduces the content of malondialdehyde (MDA) in rabbits with chronic intraocular hypertension, increases the activity of superoxide dismutase (SOD), and reduces the permeability of retinal blood vessels; it improves the grayscale of retinal ganglion cells and the density of active ganglion cells with high cytochrome oxidase activity in rats with acute intraocular hypertension.

It reduces the content of malondialdehyde (MDA) in rabbits with chronic intraocular hypertension, increases the activity of superoxide dismutase (SOD), and reduces the permeability of retinal blood vessels; it improves the grayscale of retinal ganglion cells and the density of active ganglion cells with high cytochrome oxidase activity in rats with acute intraocular hypertension.

It reduces the content of malondialdehyde (MDA) in rabbits with chronic intraocular hypertension, increases the activity of superoxide dismutase (SOD), and reduces the permeability of retinal blood vessels; it improves the grayscale of retinal ganglion cells and the density of active ganglion cells with high cytochrome oxidase activity in rats with acute intraocular hypertension.

It reduces the content of malondialdehyde (MDA) in rabbits with chronic intraocular hypertension, increases the activity of superoxide dismutase (SOD), and reduces the permeability of retinal blood vessels; it improves the grayscale of retinal ganglion cells and the density of active ganglion cells with high cytochrome oxidase activity in rats with acute intraocular hypertension.

It reduces the content of malondialdehyde (MDA) in rabbits with chronic intraocular hypertension, increases the activity of superoxide dismutase (SOD), and reduces the permeability of retinal blood vessels; it improves the grayscale of retinal ganglion cells and the density of active ganglion cells with high cytochrome oxidase activity in rats with acute intraocular hypertension.

It reduces the content of malondialdehyde (MDA) in rabbits with chronic intraocular hypertension, increases the activity of superoxide dismutase (SOD), and reduces the permeability of retinal blood vessels; it improves the grayscale of retinal ganglion cells and the density of active ganglion cells with high cytochrome oxidase activity in rats with acute intraocular hypertension.

It reduces the content of malondialdehyde (MDA) in rabbits with chronic intraocular hypertension, increases the activity of superoxide dismutase (SOD), and reduces the permeability of retinal blood vessels; it improves the grayscale of retinal ganglion cells and the density of active ganglion cells with high cytochrome oxidase activity in rats with acute intraocular hypertension.

It reduces the content of malondialdehyde (MDA) in rabbits with chronic intraocular hypertension, increases the activity of superoxide dismutase (SOD), and reduces the permeability of retinal blood vessels; it improves the grayscale of retinal ganglion cells and the density of active ganglion cells with high cytochrome oxidase activity in rats with acute intraocular hypertension.

The results of animal experiments indicate that this product can reduce the malondialdehyde (MDA) content and increase the activity of superoxide dismutase (SOD) in rabbits with chronic intraocular hypertension; reduce the permeability of retinal blood vessels; and increase the grayscale of retinal ganglion cells with high cytochrome oxidase activity and the density of active ganglion cells in rats with acute intraocular hypertension.