151 results about "Azythromycin" patented technology

A pharmaceutical composition is disclosed which comprises multiparticulates wherein said multiparticulates further comprise an azithromycin core and an enteric coating disposed upon said azithromycin core.

The invention discloses azithromycin gel eye drops and a preparation process thereof. The eye drops are prepared from a main medicine, namely azithromycin and excipients such as an adhesive, a gel matrix, an isotonic regulator, a preservative, an antioxidant, a buffering agent and the like. The adhesive, namely polycarbophil in the eye drops can increase the biological adhesion of the eye drops, so that the detention time of medicines in eyes is further prolonged. The invention provides a practical, convenient and reliable ophthalmic preparation for treating bacterial conjunctivitis, and solves the problems that the detention time of medicines in an eye drop formulation in the eyes is short, the medicines are not easy to absorb, the bioavailability is low and the like.

The present invention relates to a method for treating dry eye disease. The method comprises identifying a subject suffering from dry eye disease, and administering to the subject an amount of azithromycin effective to reduce dry eye symptoms and/or signs ands to improve tear film quality. Azithromycin is preferably administered topically to the subject in an aqueous ophthalmic solution comprises 0.5-1.5% (w/v) azithromycin in a polymeric suspension.

The invention relates to a preparation method of new preparation of erythrocin, which is characterized in that an endothelin core of erythrocin is prepared, and then an isolating layer, a protective layer, a second isolating layer and an improved enteric-coating material layer are applied one by one. In this way, new preparation of the erythrocin which has certain feature of releasing (dissolving) in acid solution (hydrochloric acid solution 9 to 1000) can be formed. The technology of the new preparation can also be widely applied to drugs which, like erythrocin, when being taken orally by a patient, cause the patient to suffer the side effects of stimulation, sickness and the like after degradation in the stomach of the patient or contact with the stomach of the patient, and drugs which the patient needs to take orally to let the blood concentration to reach the peak value in a short time. Such drugs include macrolides of azithromycin, metronidazole of nitroimidazoles, tinidazole, acyclovir as an antiviral drug, ammonium chloride as a phlegm eliminating drug, bromhexine, chloroquine as an antimalarial, nitroquine, artemisinin, dihydroartemisinin, artesunate, primaquine, pyrimethamine, carbarsone and emetine amebicides and so on.

The invention belongs to the field of chemical drugs, and specifically relates to a stabilizer of a lyophilized powder injection for azithromycin injection. The stabilizer is characterized in that the stabilizer is prepared by mixing citric acid and sodium hydroxide, and a mass ratio of the main medicine to the stabilizer is 41-73%:26-59%. With the stabilizer of the present invention, the impurity content in the lyophilized powder injection for azithromycin injection can be effectively reduced, the drug stability can be improved, and the drug use safety can be ensured.

The invention relates to the field of medicinal preparations and specifically to Azithromycin eye drops which are characterized by containing Azithromycin, a matrix, a stabilizing agent, a pH value conditioning agent, an antiseptic and injection water, wherein the matrix is sodium alginate. The invention also discloses a preparation method for the eye drops. According to the invention, sodium alginate is used as the hydrophilic matrix, so good biocompatibility is obtained; the eye drops are in a form of a semi-colloidal preparation under the condition of in vitro storage; and the preparation has appropriate viscosity and does not run off when dropped into eyes, so the preparation can substantially prolong action time of drugs in the eyes, reduce administration frequency and improve compliance of patients.

An azithromycin derivative, its medicinal acceptable salt and its usage are disclosed. In structural formula of medicinal acceptable salt, IR is -R1 or -A-R1; A is C1-5 alkylene, C2-5 vinylene, C2-5 acetylene, C3-6 naphthelene, 3-6 valence heterocyclene or C6-10 arylene containing 1-2 selected from N, O and S hetero-atom; R1 is 5-15 valence aromatic nucleus containing 0-3 selected from N, O and S hetero-atom, which can be substituted by various substituting group. It can be used to prepare medicines in treatment and prevention of infectious diseases.

The invention discloses an evaluation method for the improvement effect of a traditional Chinese medicine component on an azithromycin action baseline, and applications of the evaluation method in evaluation of a Fukeqianjin prescription. According to the present invention, a baseline equal addition method is used, wherein the action level of the exact and effective treatment drug azithromycin is determined, the azithromycin and a tested traditional Chinese medicine composition are administered to experiment models in a parallel manner, the baseline level of the combination medication and the treatment effect trend of the of the combination medication are determined, a group pharmacokinetics-group pharmacodynamics combined model is established, and verification is performed; the pharmacokinetics-pharmacodynamics system variation dynamics system capable of quantitatively evaluating the participation of the medicinal guide is scientifically designed, and the disadvantage of the application of the weak efficacy drug treatment effect index point method to determine mean value comparison in the research method is changed; with the application of the evaluation method of the present invention in the evaluation of the improvement of the Fukeqianjin prescription, the synergetic effect of the Fukeqianjin prescription composition on each pharmacokinetic parameter of the azithromycin can be defined, and the main drug group providing effects of anti-inflammation and blood circulation activating in the Fukeqianjin prescription composition can be summarized and obtained; and the evaluation method can be well used for evaluating the safety and the effectiveness of the combination of the traditional Chinese medicine composition and the antibiotics, particularly for evaluating the internal elimination effect of the angelica sinensis component medicinal guide in the Fukeqianjin prescription.

The invention discloses a preparation method of azithromycin dispersible tablets. The preparation method comprises the following steps: weighing, preparation of an adhesive, preparation of wet granules, drying and total blending. The process obtained through large amount of experimental research on the prescription of the dispersible tablets solves the problems of sticking, tablet cracking, uncapping and the like of azithromycin in a tablet compressing process, and the dispersible tablets with uniform dispersion, good dissolution, smoothness, uniformity and good cleanliness are obtained. The method is simple to operate, has low requirement for equipment, facilitates preparation and is suitable for industrial mass production.

The invention relates to an azithromycin capsule which comprises azithromycin capsule comprises azithromycin, a filling agent, an adhesive and a glidant, and further relates to a preparation method of the azithromycin capsule. In the technical scheme, raw materials are made into a micropill capsule, and medicines are uniformly dispersed, so that the problem that the main medicine has low probability of absorbing water is solved, the product quality is improved, and the medicine stability is guaranteed. The capsule has the advantages of high dissolution speed and high bioavailability, and the preparation method provided by the invention is simple to operate, is under mild conditions and is suitable for large-scale industrial production.

The invention pertains to a preparation method adopting a spray-drying method to encapsulate drugs into miniature capsule fine granules, more particularly relates to the preparation of azithromycin fine granules. The preparation method comprises the steps that: (1) poly-acrylic acid resin is soaked in an organic solvent, stirred, dissolved and prepared into a poly-acrylic acid resin solution after being filtered by a mesh sieve; (2) azithromycin material is added into the poly-acrylic acid resin solution obtained from Step 1), thus obtaining a mixed material; (3) the mixed material of Step (2) is treated with spray-drying, and miniature capsules are collected; and (4) the miniature capsules obtained from the Step (3) are added with a sweet food additive, mixed evenly, dried and prepared into granules. The preparation method prepares the azithromycin material solution into the miniature capsules by the way of spray-drying and solves the disagreeable taste effect caused by the bitterness of azithromycin preparations by sweet layers wrapping the outer layers of the miniature capsules. The solving of the taste of the azithromycin preparations cause the granules to be convenient for users to take, especially for children and patients with chronic diseases and needing to take the granules for a long term.

The invention pertains to the technical field of medicament and discloses azithromycin sustained release tablets and a preparation method thereof. The composition of a prescription of the azithromycin sustained release tablets is as follows: 10%-80% of azithromycin, 5%-50% of sustained release formulation, 1%-50% of bulking agent and 0.1%-5% of lubricant. The invention is prepared by the following method: the azithromycin, the sustained release formulation, the bulking agent are crushed, then passes 100 mesh sieve and mixed evenly; binder is added to make damp mass which is sieved for pelletization; a wet pellet is dried at the temperature of 50-80 DEC C; the dried pellet is sieved for granulating and then mixed with lubricant for tabletting. The invention is capable of reducing the higher peak concentration of the azithromycin and decreasing fluctuation and untoward response of a medicine, improving medicine concentration in tissue, lengthening the half-life period of the medicine, improving the compliance of a patient, thereby reducing the occurrence of medicine resistance to the utmost extent. The prescription is capable of reducing the side effect of the azithromycin, improving bioavailability, which has the advantages of lasting drug effect and being convenient for being taken.