Oral solid formulation containing irinotecan and method of preparing the same
a solid formulation and oral technology, applied in the field of oral solid formulations containing irinotecan, can solve the problems of severe diarrhea, extreme suppression of the immune system, adverse effects of irinotecan, etc., and achieve the effects of improving bioavailability, high stability with time, and increasing the dissolution rate of active ingredients
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examples 1 to 3
Tablets Including Acidifying Agent (1)
[0056]Irinotecan hydrochloride trihydrate (Dongwoo Fine-Chem, Korea), lactose, and microcrystalline cellulose were mixed together (pre-mixing) according to the compositions of Table 1, followed by adding a binding solution which was acidified by adding and dissolving citric acid, lactic acid, or acetic acid added as an acidifying agent in a binding solution of povidone dissolved in a mixture of ethanol and water (7:3) to the mixture, granulating, drying, and sieving with a 20-mesh sieve, to thereby prepare irinotecan wet granules.
[0057]Croscarmellose sodium was then added to the obtained irinotecan wet granules and mixed (mixing) together, followed by adding magnesium stearate to the mixture, mixing the mixture together (final mixing), and tableting the final mixture with a rotary tablet press (GRC-18, available from Sejong Pharmatech Co., Ltd., Korea) to form tablets having a hardness of about 5 to about 12 kp.
TABLE 1Amount (mg)IngredientExampl...
examples 4 to 6
ts Including Different Amounts of Acidifying Agent
[0058]Tablets of Examples 4 to 6 were prepared in the same manner as in Example 1, according to the compositions of Table 2, except that different amounts of citric acid were used as an acidifying agent.
TABLE 2Amount (mg)IngredientExample 4Example 5Example 6Pre-Irinotecan21.7321.7321.73mixinghydrochloridetrihydrateLactose42.0042.0042.00Microcrystalline104.20109.20114.20celluloseBindingPovidone6.006.006.00solutionCitric acid15.0010.005.00Ethanol / water(40.00)(40.00)(40.00)MixingCroscarmellose10.0010.0010.00sodiumFinalMagnesium2.002.002.00mixingstearateTotal weight200.93200.93200.93
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