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Repaglinide/metformin combo tablet
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A metformin hydrochloride tablet technology, applied in the field of medicine, can solve problems such as inconsistent onset time, high treatment costs for patients, and poor drug dissolution
Active Publication Date: 2014-08-06
HANGZHOU ZHUYANGXIN PHARMA
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Problems solved by technology
[0016] The disadvantage of the above-mentioned double-layer sustained-release tablets or compressed small tablets separately is that their preparation requires too much equipment and is difficult to industrialized production. Even if the products are put on the market, patients will need to pay high treatment costs; The preparation process will lead to excessive hardness of the tablet, which will affect the release of the drug, and it will be difficult to release the drug from the connecting surface of the upper and lower double-layer tablets
Moreover, because repaglinide is almost insoluble in water, the drug's in vitro dissolution rate is poor, resulting in low bioavailability.
[0017] In the compound tablet containing repaglinide and metformin, the weights of the two active ingredients differ greatly, so special consideration needs to be given to the uniformity of low-dose repaglinide, that is, the content uniformity; Glinide has poor solubility and metformin has very good solubility. There is a big difference between the two in the dissolution performance of the tablet, which may cause the onset time of the two drugs to be inconsistent after the tablet is taken.
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[0082] In the above table, the amount of tromethamine is 1.87 mole times that of repaglinide (both are expressed in mole times when calculating the relative amounts of the two below).
[0083] Preparation method:
[0084] (a) Grinding each material to a pharmaceutically acceptable particle size (particle size less than 80 mesh);
[0085] (b) Preparation of granules I: Repaglinide, alkaline agent, solubilizer, and binder are dissolved in an appropriate amount of water to make a 2 / 4 saturated solution, and the solution is sprayed (retrofitted syringe at the outlet, The solution can be ejected from it when extruded outwards) into the filler, fully mixed evenly, dried to a particle with a moisture content lower than 2%, and then the dried particle is ground into a fine powder with a particle size of less than 80 mesh to obtain a particle I (this process The repaglinide yield of medium ...
Embodiment 2
[0090] Supplementary Example 2: Referring to the formula and method of Example 1 above, the difference is that the amount of calcium hydrogen phosphate is adjusted, which are 0, 1, 2.5, 5, 7.5, 12.5, 15, and 20 of repaglinide respectively. .
Embodiment 3
[0091] Supplementary Example 3: With reference to the formula and method of Example 1 above, the difference is that tromethamine is replaced by meglumine, and the amounts are 0.5, 1.0, 2.0, 5.0, 10.0 moles of repaglinide times, the obtained plain tablets were recorded as Ex131, Ex132, Ex133, Ex134, Ex135, and were sealed and packed in aluminum-plastic composite film bags respectively.
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Abstract
The invention relates to a repaglinide / metformin combo tablet, particularly a pharmaceutical composition in the form of a tablet, which comprises the following components in parts by weight: 500 parts of metformin hydrochloride, 0.5-5 parts of repaglinide and 10-200 parts of medicinal auxiliary materials. The medicinal auxiliary materials include, but are not limited to filler, disintegrant, binding agent, alkali and lubricant. The invention also relates to a method for preparing the pharmaceutical composition. The pharmaceutical composition provided by the invention has favorable pharmaceutical properties.
Description
technical field [0001] The invention belongs to the technical field of medicine, and in particular relates to a tablet pharmaceutical composition with repaglinide and metformin as active ingredients and a preparation method thereof. Background technique [0002] Repaglinide (English name Repaglinide), its chemical name is: S(+)-2-ethoxy-4-{2-[(3-methyl-1-(2-(1-piperidinyl) phenyl)butyl)amino]-2-oxoethyl}benzoic acid. Molecular formula: C27H36N2O4, molecular weight: 452.59, and its structural formula is as follows: [0003] [0004] Repaglinide is a benzoic acid derivative, a non-sulfonylurea insulin secretagogue, a new type of oral hypoglycemic drug that acts rapidly, and specifically binds to the 36KDA protein on the ATP-dependent potassium ion channel outside the islet D cell membrane , to close the potassium channel, depolarize the D cell, open the calcium channel, and promote the influx of calcium ions to promote insulin secretion. [0005] Metformin (Metformin), i...
Claims
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