Pharmaceutical composition and preparation method thereof
A composition and drug technology, applied in the direction of pharmaceutical formulations, medical preparations containing active ingredients, block delivery, etc., can solve problems such as low bulk density, inappropriate content measurement values, and reduced selectivity
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Embodiment 1
[0035] prescription:
[0036]
[0037] According to the above recipe, take the materials, mix the active substance, lactose, microcrystalline cellulose and crospovidone to obtain an intermediate mixture, then add silicon dioxide and mix with magnesium stearate to obtain the final mixture.
[0038] The static state of each mixture powder in the whole process was directly observed with the naked eye, and it was found that the intermediate mixtures were all electrostatically charged, but the static state of the final mixture of each recipe was different, and the measured particle content was different. The results are shown in Table 1 below.
[0039] Table 1 Example 1 Experiment related results
[0040] combination
A
B
C
D
E
traits
Static electricity
good
good
good
Static electricity
particle content
93.2%
98.7%
99.8%
98.1%
94.9%
[0041] Note: The particle content in this article refer...
Embodiment 2
[0044] Taking the composition C of Example 1 as the object, the influence of different mixing processes on the composition and the final tablet (directly obtained by pressing the composition C) was explored. The process scheme is summarized as follows:
[0045]
[0046] Note: Premix I, premix II, and total mixing are steps performed in sequence, that is, all materials are added to the mixture obtained in the previous step, and then mixed.
[0047] Results: It was observed that the compositions obtained after the total mixing of Schemes 1 and 2 had no static electricity, but the intermediate mixture obtained by the premixing scheme 1 had static electricity, while the intermediate mixtures obtained by the premixing I and the premixing II scheme 2 had no static electricity. Electrostatic; take 6 samples of the mixture obtained in each step, measure its particle content and calculate its deviation RSD, the results are shown in Table 2.1, 2.2.
[0048] Table 2.1 Mixing uniformit...
Embodiment 3
[0067] 1. Prescription
[0068] tablet
Reference preparation
C
Element
mg / tablet
mg / tablet
active substance
59.12
59.12
Lactose
247.72
234
microcrystalline cellulose
36.96
50.68
Crospovidone
7.2
5.4
silica
1.8
3.6
Magnesium stearate
7.2
7.2
[0069] 2. Preparation process
[0070] 2.1 The samples of the reference preparation were prepared by dry granulation process;
[0071] 2.2 Tablet C uses the preparation process of Scheme 2 in Example 2 to prepare samples, and the hardness is controlled at 5-7kg / cm 2 .
[0072] 3. Dissolution
[0073] The dissolution rate of the tablet was determined according to the dissolution method used in the above table 2.3, and the results of the dissolution data are as follows:
[0074] time / min
Reference preparation
tablet C
5
56%
93%
10
96%
98%
15
97%
9...
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