87results about How to "Small fluctuations in blood concentration" patented technology

The invention discloses a memantine hydrochloride capsule sustained-release preparation, wherein the preparation is composed of two parts, namely, immediate-release grains and sustained-release grains; the sustained-release part is composed of a blank pellet core, a medicine layer and a release control layer; and the immediate-release part is composed of a blank pellet core and a medicine layer. The capsule is uniform in content, good in release effect, stable in blood concentration, good for reducing the toxic and side effects of medicines, and is capable of being used for treating moderate-to-severe Alzheimer-type dementia, and the medicine-taking times of the patient are reduced,.

The invention discloses a compound preparation of calcium antagonist and timishatan for reducing blood pressure and its use. The inventive compound preparation is composed of following components by weight portion: 10-160 portion of timishatan, 0.5-50 protion of calcium antagonist. The calcium antagonist expands blood vessel to induce reflex sympathetic nerve excitement and the timishatan antagonizes neurohormone activity which is able to release from the sympathicus over-activation in the CCB blood pressure reduction, reduce the adverse effect induced by CCB treatment, provide all-around protection of the target organ such as heart, brain and kidney. The association of two acts synergistic effect to reduce blood pressure.

The invention provides a new air sac type gastric retention controlled-release medicine release system, including (1) an air sac which is formed by wrapping high molecular film-forming materials and hydrophobic materials outside a hollow sac; (2) a medicine containing layer which is composed of medicines and pharmaceutically acceptable excipient; the medicine containing layer covers the outside of the air sac and includes a medicine controlled release layer or a medicine slow release layer. If necessary, a quick release layer, which is composed of medicines and excipient and covers the outside of the controlled release layer or the slow release layer, can also be included. The air sac can also be internally filled with a certain amount of gas generant which includes carbonate and pharmaceutically acceptable organic acid. The average density of the whole formulation can be generally controlled below 0.6/cm<3> and is obviously superior to the present gastro-floating formulation on sale, and the floating time in the stomach is rather longer than a common gastro-floating formulation.

The invention discloses a pregabalin stomach floating-type slow-release tablet. The pregabalin stomach floating-type slow-release tablet comprises an active ingredient, a framework material, a swelling agent and an excipient. The active ingredient is pregabalin and pharmacologically acceptable salt, a solvate, a hydrate or a complex thereof. The framework material is combination of any one or moreof hydroxypropyl methylcellulose, hydroxypropylcellulose, acrylic resin and derivatives thereof, wherein the active ingredient accounts for 7-33% of a total weight of the slow-release tablet, the framework material accounts for 5-50% of the total weight of the slow-release tablet, the swelling agent accounts for 5-55% of the total weight of the slow-release tablet, and the balance of the excipient. The pregabalin stomach floating-type slow-release tablet is capable of, through selecting the suitable combination of the framework material and the swelling agent, achieving the following purposes: 1) prolonging residence time of the slow-release tablet in a stomach, enabling a drug to be continuously released and absorbed, and reducing fluctuation of blood concentration; and 2) reducing the physiological condition effect of a patient, and enabling the efficacy of the slow-release tablet to have a smaller individual difference.

The invention discloses hyperglycosylated human growth hormone fusion protein. The human growth hormone fusion protein sequentially contains a human growth hormone (hGH), a flexible peptide joint (L), human chorionic gonadotropin beta-carboxyl terminal rigid peptide (CTP) and a human immunoglobulin Fc fragment from the N terminal to the C terminal. The invention further discloses a method for efficiently preparing the fusion protein. Compared with a recombinant hGH, the built fusion protein has more excellent in-vivo drug efficacy, the in-vivo circulation half-life period is prolonged, the administration frequency is greatly decreased, and the bioavailability is improved; meanwhile, the production process is simpler and more efficient.

The invention provides a nifedipine double-layer osmotic pump tablet. The nifedipine double-layer osmotic pump tablet includes a medicated-layer tablet core, a boosting-layer tablet core, a semipermeable membrane and single drug-releasing holes arranged in the surface of the semipermeable membrane at one side of a medicated layer. The nifedipine double-layer osmotic pump tablet is simple in preparation process and low in cost and has stable drug-releasing rate; zero-level release is basically realized in 416 hours, and the the drug release is basically complete; the purpose of administration of preparation once per day is achieved, and the compliance of a patient is improved. The invention provides a preparation method of a nifedipine controlled-release tablet.

An oral-applied slow-releasing or release-controlalble solid clozapine for treating psychosis is prepared from clozepine, skeleton assistant material and filler (starch, hydroxypropyl cellulose, ethylcellulose, etc.). Its advantages are high curative effect, and stable concentration of medicine in blood.

The invention relates to a double-layer sustained release lornoxicam tablet comprising (a) a quick release layer and (b) a sustained release layer, wherein, the quick release layer comprises (a1) the lornoxicam, (a2) alkaline matter and (a3) an other optional carrier or excipient acceptable to pharmacy and the sustained release layer comprises the (b1) lornoxicam, (b2) sustained release substance and (b3) the other optional carrier or the excipient acceptable to the pharmacy. The weight proportion of (a1) and (b1) is 1:50 to 50:1. The invention also provides a preparation method of the double-layer sustained release lornoxicam tablet. The double-layer sustained release preparation of the invention has the advantages of the quick effect of the quick release preparation and the sustained effect of sustained release preparation. In addition, the double-layer sustained release preparation can maintain the effect of effective blood concentration continuously and stably after the effective blood concentration is reached rapidly.

The invention relates to a lipid prodrug of a drug containing guanidino and pharmacosome thereof. The lipid prodrug is a medicinal compound which is in covalent union with long-chain fatty acid with a single chain or double chains and contains guanidino. The pharmacosome is formed in such a way that the lipid prodrug disperses freely in a proper medium, is orderly arranged into a single-layer or double-layer structure, and is automatically assembled finally. The pharmacosome has biological targeting property, can effectively enhance the bioavailability of the drug and opens up a novel concept for solving the problems of poor transmembrane capability, low bioavailability and the like of a water soluble drug.

A microemulsion of matrine with high biologic utilization rate and stability is proportionally prepared from matrine, emulsifier, emulsifying aid, oil phase and water phase. Its preparing process is also disclosed.

The coculine hydrochloride cataplasma with raised patient compliance includes coculine hydrochloride as medicine component; matrix comprising water soluble polymer skeleton, stuffing, cross-linking agent, cross-linking regulator, humectant and transdermal promoter; and non-woven fabric as lining layer. The preparation process includes dispersing water soluble polymer in glycerin to obtain phase A; mixing cross-linking agent, cross-linking regulator and small amount of deionized water to obtain phase B; adding transdermal promoter, medicine and sufficient deionized water to obtain phase C; mixing phase an and phase B and adding gradually phase C to obtain mixture; painting the mixture onto the lining layer and covering with anti-sticking layer. The present invention has good skin hydrolyzing effect, proper skin affinity, no pain produced during taking off, no irritation on skin and obvious slowly releasing effect.

The invention relates to a preparation method of melbinum osmotic pump controlled release tablets for treating type 2 diabetes. The preparation method comprises the steps of preparing tablet cores, coating semi-permeable membrane layers, perforating, drying and coating damp-proof layers, characterized in that when the tablet cores are prepared, a medicinal salt of melbinum and a nonionic surfactant are added, and the nonionic surfactant accounts for 2-20wt.% of the medicinal salt of melbinum. The medicament disclosed by the invention has stable release, no irritation on intestinal tracts and few times of administration, is acceptable by patients, and greatly improves the compliance of patients.

The invention relates to a drug sustained-release preparation and its preparation method, in particular to an aceclofenac sustained-release tablet and its preparation method, which comprises the following ingredients according to the weight percentage: aceclofenac of 60 to 95 per cent, skelecton retarder of 3 to 30 per cent, adhesive of 1 to 10 per cent and lubricant of 0.5 to 15 per cent. The hydroxypropylmethyl cellulose and carboxyvinyl polymer are adopted as optimized skelecton retarder. With such a technical proposal in the invention, the one aceclofenac sustained-release tablet can be taken a day to effectively reduce the fluctuation of blood drug level, prolong the maintenance duration of effective blood drug level and lower down the incitement to gastrointestinal tract. Besides, the invention also provides the preparation method of the aceclofenac sustained-release tablet.

The invention discloses an alfacalcidol sustained-release preparation and a preparation method thereof. The alfacalcidol sustained release preparation comprises alfacalcidol, a sustained-release skeleton matrix, a filling agent, a surface active agent, a lubricating agent and an adhesive. The alfacalcidol sustained-release preparation can achieve long-acting release, and can stably release effective ingredients in a balanced mode within 24 hours.

A slow-release compound of benzafibrate is a slow-release capsule, the main part of which are the slow-release pellets. The slow-release pellets comprise the benzafibrate served as the active component and the slow-release layer with slow-release property covering outer layer of the medical pellet. The other excipient comprises the excipient material with pharmaceutical approval after mixing with benzafibrate and the slow-release material with slow-release property. The ratio among the benzafibrate, the excipient material and the slow-release material (weight ratio) is 1 to 0.01 till 1 to 0.01 till 1. The compound can prolong residence time of the medicine in the stomach. The compound is also capable of controlling the drug release, reducing the administration times, reducing toxic and side effects and improving the treatment effect.

The invention discloses a paliperidone release rate progressive increasing preparation and a preparation method thereof. The paliperidone release rate progressive increasing preparation provided by the invention, from outside to inside, comprises a non-essential damp-proof beautiful coating, a semipermeable rigid film shell which plays a vital role, and an osmotic pump tablet core provided with one or more holes. The osmotic pump tablet core, from top to bottom, is composed of a controlled-release layer, a drug-containing layer and a push promoting layer; and penetration enhancers in the push promoting layer, in accordance with different coating weight increasing degrees, include a coating penetration enhancer I, a coating penetration enhancer II and a coating penetration enhancer III. The various coating penetration enhancers, which are different in coating weight increasing degree, differ in osmotic pressure in water. With the application of the paliperidone release rate progressive increasing preparation disclosed by the invention, when water enters the tablet core along with an osmotic pressure difference, the push promoting layer absorbs water to be swelled so as to push the outward release of the drug-containing layer and the controlled-release layer, and as time varies, the isolating coating penetration enhancers are exposed in the water, so that the osmotic pressure is continuously increased, a water-absorbing rate is increased and a drug-release rate is increased as well, thus progressive increasing drug release is achieved; therefore, the drug-release rate is effectively controlled, a blood drug concentration curve is kept stable and the fluctuation of blood drug concentration is relieved.

The present invention relates to a rucaparib oral controlled-release and sustained-release pharmaceutical composition, which contains dissolution form improved rucaparib and a matrix polymer for regulating release rate. According to the present invention, the in vivo absorption behavior, the blood drug level and the PARP enzyme inhibition level of the pharmaceutical composition can be controlled,the pharmaceutical composition has the improved rucaparib loading and/or oral absorption and/or bioavailability and/or blood drug concentration control and/or enzyme inhibition level control, and canbe used as the sole preparation or can be combined with other treatment methods in the treatment of cancer.

The invention discloses a tripterygium wilfordii hook extract cataplasm and a preparation method thereof. The tripterygium wilfordii hook extract cataplasm provided by the invention contains tripterygium wilfordii hook extract and a substrate, wherein the weight ratio of the tripterygium wilfordii hook extract to the substrate is 1:3-12. The tripterygium wilfordii hook extract cataplasm provided by the invention improves the clinical medication security of the tripterygium wilfordii hook, increases the medicament concentration of the tripterygium wilfordii hook at inflammatory joints, reduces adverse reaction and toxic or side effect caused by medicaments, and has enhanced anti-inflammatory action and reduced blood concentration fluctuation.

The invention provides a dexketoprofen coating sustained-release micro-encapsulated capsule and a preparation method thereof, which belong to the technical filed of chemico-pharmaceutical preparations. The coating sustained-release micro-encapsulated capsule consists of coating sustained-release particles and a capsule shell. The coating sustained-release particles are made of core particles containing dexketoprofen basic remedy through a coating technique. The invention can reduce the stimulation of the dexketoprofen on gastrointestinal tract and taking times, consequently, the medication compliance of patients is improved, the fluctuation of dexketoprofen blood concentration is reduced, bioavailability and treatment effect are improved and adverse reactions are reduced.

The invention discloses a propylene glycol marinate sulfate sustained-release preparation and a preparation method thereof. The propylene glycol marinate sulfate sustained-release preparation comprises: propylene glycol marinate sulfate, a sustained-release skeleton matrix, a filler, a surfactant, a lubricant and a binder. The propylene glycol marinate sulfate sustained-release preparation disclosed in the invention can achieve long-acting release, and can release drug ingredients stably and evenly within 24h.

The invention provides a red ginseng extract pellet preparation, which is prepared from a red ginseng extract and pharmaceutical adjuvants, and is characterized in that: an excipient and a bonding agent are taken as the pharmaceutical adjuvants; and the pellet preparation comprises the following components in percentage by weight: 2-80 percent of a red ginseng extract, 15-97 percent of an excipient and 1-5 percent of a bonding agent. The pellet preparation can be prepared into a slow-release or enteric preparation as required. As proved by a pharmacological experiment, the pellet has the effects of reinforcing vital energy, restoring pulses, preventing exhaustion, tonifying qi and controlling blood.