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isaballa00

铜虫 (小有名气)

[求助] 原料药与辅料相容性实验

现在做一片剂,根据CTD要求,要提供辅料相容性实验,请教大家具体是怎么操作?
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在理想与现实间徘徊,得过且过。。。
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rnyter960

木虫 (小有名气)

【答案】应助回帖


zhychen2008(金币+1): 多谢回帖交流 2011-08-04 17:01:14
制剂百科全书第二卷片剂中有提到,可以看看此书
5楼2011-08-04 14:38:55
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missjane

木虫 (著名写手)

【答案】应助回帖


zhychen2008(金币+1, DRDEPI+1): 感谢回帖交流 2011-08-04 16:57:44
isaballa00(金币+1): 2011-08-08 15:08:42
主药与辅料相容性研究是处方前研究工作中的一项重要内容。相容性研究的具体试验方法应根据制剂品种的具体情况确定。例如对于口服固体制剂,可选若干种辅料,如辅料用量较大的(如填充剂等),可用主药:辅料=1:5的比例混合,若用量较小的(如润滑剂等),则用主药:辅料=20:1的比例混合,取一定量,按稳定性影响因素试验方法,分别在强光(4500±500Lux)、高温(60℃)、高湿(相对湿度90±5%)的条件下放置10天,用HPLC或其他适宜的方法检查含量及有关物质放置前后有无变化,同时观察外观、色泽等药物性状的变化。必要时,可用原料药和辅料分别做平行对照实验,以判别是原料药本身的变化还是辅料的影响。
学习使人进步!
2楼2011-08-04 13:03:51
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dongliang09

金虫 (小有名气)

【答案】应助回帖

★ ★
zhychen2008(金币+2): 感谢回帖交流 2011-08-04 17:01:07
以下是参加ANDA培训时的资料(没翻译),仅供参考。
Excipient Compatibility辅料相容性研究
Expectation in Pharmaceutical Development from regulatory bodies:
•To understand with which common excipients the drug is compatible;
•To give a ranking order of the compatibility in each category ofexcipients;
•To lay foundation of formulation design for a compound
In generic world, excipients used in the product are known and the product is stable. But, API-compatibility study is still needed because source of excipients is different. Different source of an excipient may have different starting materials, different process, and different impurity profile, thus indicating a potential impact on API
辅料相容性研究的实验设计(1)
•Select excipients: >2 excipients in each category (e.g., filler, binder, disintergant, glidant, wetting agent, lubricant, coating materials);
•Ratio of API to excipient: similar to the common ratio in a formulation;
API:Filler: 1:10
API: Binder or disintegrant: 1:1
API: lubricant or glidant, or surfactant: 10:1
•Container/closure: scintillation vial/tight seal. 500 mg powders/vial.
•Storage conditions: Stressed! 40°C/75% RH open/closed, 55-60°C ambient humidity.
•Sampling time: Initial, 2 weeks, 4 weeks.
•Sample analysis: physical appearance and impurity
Other things to be considered:
1: API control must be prepared and tested in order to know the real compatibility problem under stressed conditions.
2: A second set of samples may be prepared in which 5% of water is added into the powder mixture. Double the work load☺
3:Stearicacid and Dicalciumphosphate at 40°
辅料相容性研究结果的分析
•To obtain possible quantitative relationships to excipient characteristics and interaction rates
•Physical change: caking, liquefaction, and odor or gas formation, discoloration (amines, sugars)
•Impurities: total level and individual level
existing peaks vsnew peaks.
•To give the ranking order: selection of “relatively”good one over “less”good in the formulation
4楼2011-08-04 14:30:07
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cmc2345

木虫 (小有名气)


zhychen2008(金币+1): 多谢参与 2011-08-07 00:04:44
刚做完,放样做了10天,液相也跑了10天。
6楼2011-08-06 17:10:58
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