不同厂家依诺沙星片的体外溶出度比较

目的考察国内5个不同厂家依诺沙星片的体外溶出度情况。方法按《中国药典》2005版采用紫外分光光度法,以9-l000ml盐酸为溶出介质,转速l00r/min,温度37oC±0.5oC,测定不同厂家的6个品种的体外溶出度。结果各厂家依诺沙星片在30min内均溶出80%以上,符合《中国药典》2005版规定,但各组溶出度方差有显著性差异(P<0.05)。结论各生产厂家应严格控制产品内在质量,保证临床用药安全有效。     

不同厂家依诺沙星片的体外溶出度比较

目的考察国内5个不同厂家依诺沙星片的体外溶出度情况。方法按《中国药典》2005版采用紫外分光光度法，以9—1000ml盐酸为溶出介质，转速100r／min，温度37℃&#177;0．5℃，测定不同厂家的6个品种的体外溶出度。结果各厂家依诺沙星片在30min内均溶出80％以上，符合《中国药典》2005版规定，但各组溶出度方差有显著性差异（P〈0．05）。结论各生产厂家应严格控制产品内在质量，保证临床用药安全有效。     

盐酸头孢他美酯片剂与胶囊剂体外溶出度比较

目的:测定并比较4家不同生产厂家的头孢他美酯片剂与胶囊剂的溶出度,为临床选择用药提供依据。方法:按《中国药典》(2005版),采用紫外分光光度法,测定波长为263nm,以0.1mol/L盐酸为溶出介质,转速100r/min,温度为(37±0.5)℃,测定头孢他美酯片剂与胶囊剂溶出度。结果:4家(A、B、C、D厂)不同生产厂家的头孢他美酯片剂与胶囊在45min内溶出均在80%以上,符合部颁标准。溶出参数t30,t50,td,t80,m,kr具有显著性差异(P<0.01)。结论:头孢他美酯溶出度胶囊剂(D厂)明显>片剂,片剂溶出度A>C>B,B厂生产的片剂溶出度最慢。     

头孢羟氨苄胶囊剂体外溶出度的比较

目的 :测定 4个不同厂家的头孢羟氨苄胶囊剂的溶出度 ,考察产品质量。方法 :按中国药典 (2 0 0 0年版 )采用紫外分光光度法测定头孢羟氨苄胶囊剂溶出度。结果 :4个厂家的头孢羟氨苄胶囊剂 40min内均溶出 ,溶出度参数T50 ,Td,T80 ,m存在显著性差异 (P <0 .0 1) ,溶出速率常数Kr差异无显著性 (P >0 .0 5 )。结论 :为保证临床用药安全有效 ,应严格按照药典规定控制该产品的内在质量     

替米沙坦片剂与胶囊剂体外溶出度的比较

目的：考察国内5个不同厂家替米沙坦片剂与胶囊剂的体外溶出度情况。方法：采用紫外分光光度法分别测定A,B,C,D和E厂替米沙坦片的累积溶出度,绘制其溶出曲线,计算参数m、T50、Td的值,并对T50、Td值进行两两比较。结果：各厂家替米沙坦片剂与胶囊剂在60min内均溶出65%,符合《中国药典》2005版规定,但各组溶出度方差有显著性差异（P〈0.05）。结论：各生产厂家应严格控制产品内在质量,保证临床用药安全有效。     

不同剂型左氧氟沙星溶出度的测定及比较

目的考察不同厂家不同剂型左氧氟沙星（胶囊、片剂）的体外溶出度,为药品采购及临床用药提供参考。方法采用转篮法进行体外溶出度实验,以紫外分光光度法进行含量测定,计算累积溶出百分率,以威布尔方程拟合溶出参数Ro、Td、m。结果左氧氟沙星胶囊剂及片剂的体外溶出度均符合2005版《中国药典》规定,但片剂与胶囊剂的Td间有显著性差异（P〈0．05）。结论左氧氟沙星片剂溶出度比胶囊快,药品采购及临床用药时应加以注意。     

胶囊壳影响氟康唑胶囊剂溶出度测定考察

目的比较3个厂家氟康唑胶囊剂的胶囊壳对溶出度的影响。方法采用紫外分光光度法,在260nm波长处,以盐酸溶液（9→1000）为溶出介质,测定氟康唑胶囊剂的溶出度。溶出度采用转篮法,转速为100r·min^-1。溶出时间为45min。结果与结论3个厂家氟康唑胶囊剂溶出度按〈中国药典）2005年版2部规定测定,氟康唑胶囊壳会对溶出度测定产生一定影响。     

美洛昔康片剂与胶囊剂溶出度的比较

目的　测定 5个不同厂家的美洛昔康片剂与胶囊剂的溶出度 ,考察产品质量。方法　采用紫外分光光度法测定美洛昔康片剂与胶囊剂的溶出度。结果　 5个不同厂家的美洛昔康片剂及胶囊剂 4 5min内均溶出 70 %以上 ,溶出度参数T50 、Td、T80 、m及溶出速率常数Kr均存在显著性差异 (P <0 0 1)。结论　不同厂家产品的内在质量存在差异 ,提示临床用药时应加以注意     

不同厂家司帕沙星片体外溶出度比较

目的考察4厂家司帕沙星片的体外溶出度,为临床用药提供参考。方法采用转篮法进行体外溶出度实验,用紫外分光光度法进行含量测定,计算其累积溶出百分率,并以威布尔方程拟合溶出参数。结果不同厂家的司帕沙星片体外溶出度均符合2005年版《中国药典》相关规定,但各厂家T50,Td值间均有显著性差异。结论不同厂家司帕沙星片溶出参数存在差异,临床选用应加以注意。     

紫外分光法测定氧氟沙星制剂体外溶出度

目的　建立氧氟沙星的溶出度实验方法 ,对国内 4个厂家氧氟沙星片剂和胶囊剂的体外溶出度进行测定。 方法　根据中国药典 (2 0 0 0版 )二部 ,采用转篮法测定溶出度 ,以盐酸溶液 (9→ 10 0 0 ) 90 0ml为溶剂 ,转速为 5 0r·min-1,温度为 (37 0± 0 5 )℃ ,测定体外溶出度 ,并对溶出度参数 (T2 0 、T50 、Td、T80 )进行相关性分析 ,用紫外分光光度法测定吸收度 ,测定波长为 2 93nm ,该方法线性关系良好。 结果　30min时的溶出度均大于 80 % ,符合中国药典 2 0 0 0版的规定。 结论　建议医生应考虑生物利用度、溶出度、价格等综合因素选择药物 ,以达到一定的临床疗效。     

石杉碱甲胶囊剂与片剂的溶出度研究

目的：测定石杉碱甲胶囊和片剂的体外溶出速率。方法：用中国药典９５年版溶出度测定法第三法测定石杉碱甲胶囊与片剂的溶出度，在Ｗｅｉｂｕｌｌ概率纸上求出参数，用ｔ检验法进行比较；采用ＨＰＬＣ测定溶出液中用碱甲的含量。结果：片剂刚开始释放较快，胶囊有一滞后时间，胶囊与片剂的Ｔ５０分别为５．５和４．４ｍｉｎ，两者在１０ｍｉｎ后溶出百分数无显著性差异，２０ｍｉｎ时均达到９０％以上。     

依诺沙星片及其胶囊剂的溶出度考察

本文比较了国产依诺沙星片和胶囊剂的体外溶出度,结果表明:两种剂型的T_(50)有显著性差异。     

Effect of relative humidity on drug release from phenytoin sodium tablets and capsules. Part 1: Commercial preparations

In this study the release rate of the active substance from different lots of commercial tablets and capsules of phenytoin sodium kept in different relative humidities (56, 75, 95%) was studied. It was observed that in both tablets and capsules, the effect of relative humidity and ageing was evident on the in vitro dissolution rate when compared with the in vitro dissolution profiles obtained before storage. The release rate differed from one lot to another after storage, the lots with higher release rates before storage in general showing a decrease and the ones with lower dissolution rates showing a higher release rate after storage.     

A comparative study of the dissolution characteristics of capsule and tablet dosage forms of melt granulations of paracetamol--diluent effects

The dissolution characteristics of melt granulations of paracetamol in capsule and tablet dosage form were compared to determine whether the dissolution characteristics of the granules can be actualized by formulating them as rapidly disintegrating tablets. The term melt granulation refers here to the wax-matrix granules that were formed by triturating the drug powder (paracetamol) with a melted carnauba wax. The matrix granules were admixed with diluents (lactose, alpha-cellulose or microcrystalline cellulose) also in granular form to prevent size separation during encapsulation or tableting. The granules were filled into hard gelatin capsules (mean content weight, 500 +/- 6.2 mg) or tableted (mean weight 500 +/- 5.1 mg, and tensile strength 1.36 +/- 0.2 to 1.7 +/- 0.3 MN/m2). The capsules and tablets were subjected to disintegration and in vitro dissolution tests. The dissolution data were analyzed on the basis of zero, first order rate kinetics and Higuchi square root of time relationship. The results showed that the dissolution profiles were generally consistent with a first order rate kinetics (r = 0.95). The first order dissolution rate constants of capsules and tablets of the matrix granules only (without diluents) were 0.31 +/- 0.02 min(-1) and 0.20 +/- 0.03 min(-1), respectively, indicating faster dissolution from the capsules. Therefore, the dissolution characteristics of the matrix particles were not intact after tableting. Addition of diluents to the capsule formulations had no effect on dissolution rates, whereas in the tablets, dissolution rates increased. For instance, inclusion of a diluent up to 50% w/w in the tablets increased the dissolution rate constants to 0.34 +/- 0.04 min(-1) (lactose), 0.42 +/- 0.02 min(-1) (alpha-cellulose), and 0.46 +/- 0.03 min(-1) (microcrystalline cellulose). Thus, alpha-cellulose and microcrystalline cellulose produced greater enhancer effect on the tablet dissolution rates compared to lactose. Both the capsules and the tablets disintegrated rapidly within 2 to 3 minutes. The dissolution enhancer effect of the diluents in the tablets only, relates to the aqueous swelling of the disintegrated particles.     

HPLC法考察不同厂家黄藤素片的体外溶出度差异

目的：测定 5 个厂家的黄藤素片的体外释放度,考察产品质量。方法：采用高效液相色谱法,以盐酸溶液（0.1mol.L-1）900mL为溶出介质,测定黄藤素片主成分盐酸巴马汀的溶出量。结果：5 个厂家黄藤素片的容出参数 t30、t50、td、t80、m、Kr 有显著差异（P〈0.05）。结论：产品质量与生产工艺密切相关。     

尼群地平片溶出度测定

目的采用不同方法考察市售尼群地平口服片剂和软胶囊的溶出度 ,并提出尼群地平溶出度检查的标准。方法用含不同浓度的十二烷基硫酸钠 (SDS)醋酸盐缓冲液 (pH 4 5 )为溶出介质 ,采用紫外分光光度法检查 ,比较不同厂家尼群地平片和尼群地平软胶囊的体外溶出度。用相似因子法对片剂溶出度数据进行统计分析。结果用 0 3 %SDS醋酸盐缓冲液 (pH 4 5 ) ,除B片和D片之间的 (B片 D片 )相似因子F2 >5 0外 ,其余的F2 ≤ 5 0 ,可以显示出不同厂家生产的尼群地平片的溶出度差异。而用 0 1 %SDS醋酸盐缓冲液可以显示出尼群地平软胶囊与片剂的溶出度差异。结论不同厂家生产的尼群地平片的溶出度存在较大的差异 ,尼群地平片和软胶囊在溶出度方面整体存在较大差异 ,建议《中华人民共和国药典》规定尼群地平片剂的溶出度检查     

The biodisposition of paracetamol. I. The kinetics of disintegration of some dosage forms]

The in vitro properties of twelve brands of paracetamol (nine tablets and three capsules), commercialized in France, are studied. Among the brands tested (tablets), Latepyrine and Gynospasmine are characterized by faster and Panasorb by slower dissolution rate. Total time of dissolution varies between 7 and 60 min. In some brands, paracetamol is liberated from the surface of the disintegrated particles and in others the active principle is released by progressive erosion. The presence of a surface active agent enhances liquid penetration in the case of capsules.