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Levalbuterol slow-release tablet and its preparing method

A technology of levosalbutamol and sustained-release tablets, which is applied in pharmaceutical formulations, drug delivery, and respiratory diseases. drug stability, prolonged effect

Inactive Publication Date: 2006-08-09
GUANGDONG PHARMA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional administration methods of salbutamol mostly adopt nebulization inhalation and oral administration, and the effective maintenance time is short (6-8 hours). High concentration, inconsistent with the circadian rhythm of the disease

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] After levosalbutamol 5g, lactose 60g, and hydroxypropyl methylcellulose 10g are passed through 80 meshes, mix them uniformly to obtain a mixture; dissolve hydroxypropylmethylcellulose 5g in 100ml ethanol as a binding agent; add the binding agent to In the mixture, the soft material is made, and then the whole grain is made. Dry in an oven at 55°C; granulate with a 16-mesh sieve; the granulated dry granules are evenly mixed with 5 g of magnesium stearate, used as the final blended material, and pressed into tablets to obtain plain tablets. Dissolve 10 g of ethyl cellulose and 5 g of hydroxypropyl methyl cellulose in 200 ml of ethanol, and suspend them evenly. The plain tablet is coated. After coating, carry out aluminum-plastic packaging, and leave the factory after passing the inspection.

Embodiment 2

[0031] Levosalbutamol 1g, microcrystalline cellulose MCC 50g, and hydroxypropyl methylcellulose 20g were passed through 80 meshes, and mixed uniformly to obtain a mixture; Povidone K30 10g was dissolved in 100ml ethanol as a binder; the binder Add it to the mixture to make soft material, and then make granules. Dry in an oven at 50°C; granulate with a 16-mesh sieve; the granulated dry granules are evenly mixed with 1 g of magnesium stearate as the final blended material, and pressed into tablets to obtain plain tablets. Dissolve 17g of acrylic resin and 1g of hydroxypropylmethylcellulose in 200ml of ethanol, and suspend them evenly. The plain tablet is coated. After coating, carry out aluminum-plastic packaging, and leave the factory after passing the inspection.

Embodiment 3

[0033] After levosalbutamol 3g, lactose 70g, MCC 10g, pass through 80 meshes, mix evenly to obtain a mixture; dissolve 8g of hydroxypropylmethylcellulose in 100ml ethanol as a binder; add the binder to the mixture to prepare Soft material, then whole grain. Dry in an oven at 50°C; granulate with a 16-mesh sieve; the granulated dry granules are evenly mixed with 3 g of magnesium stearate, used as the final blended material, and pressed into tablets to obtain plain tablets. Dissolve 5 g of ethyl cellulose and 1 g of hydroxypropyl methyl cellulose in 200 ml of ethanol, and suspend them evenly. The plain tablet is coated. After coating, carry out aluminum-plastic packaging, and leave the factory after passing the inspection.

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Abstract

The present invention discloses a levo-salbutamol slowly-released tablet and its preparation method. Said preparation method includes the following steps: mixing levo-salbutamol and filling agent, then adding adhesive to obtain soft material, granulating, drying, tableting and coating with a layer of film coating layer so as to obtain the invented levo-salbutamol slowly-released tablet.

Description

technical field [0001] The invention relates to the field of respiratory system medicines, in particular to a levosalbutamol sustained-release tablet and a preparation method thereof. Background technique [0002] Levalbuterol (Levalbuterol) is a new drug for the treatment of asthma that has just been launched abroad but has not yet been launched in my country. Levalbuterol, Levalbuterol, (C 13 h 21 NO 3 ), which is one of the enantiomers of the racemic albuterol currently used in China. It is a β-adrenergic receptor agonist, which can stimulate the β2 adrenal receptors of bronchial smooth muscle, selectively relax bronchial smooth muscle, and has a bronchodilator effect. It is used for the treatment of asthma, asthmatic bronchitis, bronchi in patients with emphysema spasms. The drug effect of levosalbutamol is 4 times that of the currently commonly used racemic salbutamol, and the side effects are reduced. It will be the substitute product of the current salbutamol. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K31/137A61K9/22A61P11/06
Inventor 林华庆张蜀邓红李闻刘少梅
Owner GUANGDONG PHARMA UNIV
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