Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Pharmaceutical composition with sustained release function and its preparing process

A technology of composition and medicine, which is applied in the field of pharmaceutical composition and its preparation, and can solve problems such as skin itching, rash, and affecting the clinical application of products

Active Publication Date: 2007-05-23
HUNAN ZHENGQING PHARM GRP CO LTD
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the long-term clinical use of existing products, it is found that such products can cause skin itching, rash and other adverse reactions to some patients, which affects the wide clinical application of such products

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pharmaceutical composition with sustained release function and its preparing process
  • Pharmaceutical composition with sustained release function and its preparing process
  • Pharmaceutical composition with sustained release function and its preparing process

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0031] 1. Experimental method:

[0032] Six healthy Beagle dogs, body weight (20±3kg), were fasted for 12 hours before taking the medicine, and the interval between two medicines was 7 days. According to the design of randomized crossover experiment, six Beagle dogs were orally administered Zhengqing Fengtongning Controlled-release Capsules (A) and commercially available Zhengqing Fengtongning Sustained-release Tablets (B) respectively, with a dose of 120 mg. Oral administration after fasting for 12 hours. The blood collection time points are: (unit: h)

[0033] Controlled release capsules: 0, 1, 2, 4, 6, 8, 9, 10, 11, 12, 14, 24, 36

[0034] Sustained-release tablets: 0, 0.5, 1, 2, 3, 4, 5, 6, 8, 10, 12, 14, 24

[0035] About 2 mL of blood was collected from the foreleg vein, placed in a heparin-coated centrifuge tube, and immediately centrifuged at 3,500 rpm for 10 minutes to absorb the upper layer of plasma, and stored in a -20°C refrigerator until analysis.

[0036] (1...

experiment example 2

[0051] Experimental Example 2 Prescription Screening Experiment

[0052] Get 300g drug-containing pill cores respectively, and carry out the research on the following coating solution prescriptions:

[0053] Prescription one:

[0054] Eudragit NE 30D 75g Sodium Lauryl Sulfate 0.2g

[0055] Talc powder 9.24g add water to 250mL

[0056] Result: The dissolution rate of the capsules was investigated, and the results are shown in Figure 2.

[0057] As can be seen from accompanying drawing 2, the dissolution rate is slower, and the cumulative dissolution percentage in 24 hours is less than 75%. The amount of Eudragit NE 30D should be reduced.

[0058] Prescription two:

[0059] Eudragit NE 30D 65g Sodium Lauryl Sulfate 0.3g

[0060] Talc powder 9.24g add water to 250mL

[0061] Result: The dissolution rate of the capsules was investigated, and the results are shown in Figure 3

[0062] It can be seen from accompanying drawing 3 that the dissolution rate is faster, and the cumu...

Embodiment 1

[0084] Microcrystalline Cellulose 172g Sinomenine Hydrochloride 120g

[0085] Hypromellose 3.43g Acrylic resin (Eudragit NE 30D) 58.67g

[0086] Sodium Lauryl Sulfate 0.18g Talc 8.34g

[0087] As above raw materials, put 32-24 mesh microcrystalline cellulose blank cores in a centrifugal coating granulator, use sinomenine hydrochloride (below 100 mesh) as powder, and use 2% hydroxypropyl methylcellulose aqueous solution as the binder According to the following parameters, start the centrifugal coating granulator: main engine speed 200rpm, blast flow rate 15L / min, jet flow rate 10-20L / min, jet pressure 0.025-0.1MPa, spray pump speed 5-25r / min, The powder feeding speed is 5~10g / min. Until the powder is all layered on the mother core. Dry at room temperature to obtain a pill core. Add sodium lauryl sulfate and talcum powder into water and stir for 2 hours to make it uniform. Slowly pour the above suspension into Eudragit NE 30D and stir evenly. Filter through an 80-mesh sieve...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention discloses one kind of Chinese medicine composition for treating rheumatism, rheumatoid arthritis and chronic nephritis and its preparation process. The medicine composition contains coculine hydrochloride, microcrystalline cellulose, hydromellose, sodium dodecyl sulfate, acrylic resin, talcum powder, etc. The preparation process includes preparing pill core with microcrystalline cellulose and coculine hydrochloride in eccentric coating and pelletizing machine; mixing sodium dodecyl sulfate, talcum powder, water and acrylic resin to prepare coating liquid; and preparing the Chinese medicine composition with the pill core and the coating liquid in the coating and pelletizing machine. The Chinese medicine composition has the functions of dispelling wind evil and wetness evil, promoting and dredging meridian and high controlled release effect of maintaining stable blood medicine concentration for long time.

Description

technical field [0001] The invention relates to a pharmaceutical composition and a preparation method thereof, in particular to a pharmaceutical composition with controlled release for treating rheumatism, rheumatoid arthritis and chronic nephritis and a preparation method thereof. technical background [0002] Drug controlled-release preparation is one of the technologies and products that have been researched and developed rapidly in the international pharmaceutical industry in the past two decades. Its drug release speed is close to the zero-order speed process, which reduces the number of times of taking the drug, overcomes the peak-valley phenomenon of common preparations, has little irritation to the gastrointestinal tract, and has good safety. Due to the relatively short development cycle, relatively low cost and large economic benefits of controlled-release preparations, they are currently the main growth point of the international pharmaceutical economy. In 1999, t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61K31/4748A61K9/16A61K9/48A61P29/00A61P19/02A61P13/12
Inventor 吴飞驰何仲贵何洪德
Owner HUNAN ZHENGQING PHARM GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com