刺五加黄芪片薄膜包衣的制备与质量控制

目的改进刺五加黄芪片包衣的质量和稳定性。方法采用羟丙甲基纤维素、丙烯酸树脂Ⅱ号为薄膜包衣主材对刺五加黄芪片进行薄膜包衣，并将其薄膜衣片与糖衣片进行质量和稳定性比较。结果薄膜包衣制备工艺可行，薄膜衣片外观、硬度、崩解时限、水分、稳定性、抗热性等均优于糖衣片。结论薄膜包衣可以改进刺五加黄芪片的质量。     

宣肺止咳薄膜衣片的制备及其稳定性研究

目的研究宣肺止咳薄膜衣片的制备及考察其稳定性。方法采用丙烯酸树脂制备薄膜衣片,应用加速试验进行稳定性研究,并与糖衣片进行比较。结果宣肺止咳薄膜衣片的包衣合格率、崩解时限、防潮性、微生物限度检查等指标均优于糖衣片,加速试验稳定性良好。结论制备宣肺止咳薄膜衣片的方法简单可行,质量稳定。     

甲状腺片薄膜包衣片的制备及其稳定性的考察

目的研制甲状腺薄膜包衣片 ,提高稳定性。方法进行光照、高温、高湿及加速试验比较甲状腺薄膜包衣片与糖衣片的稳定性。结果甲状腺薄膜包衣片与传统的糖衣片比较具有较强的抗光照、高温及高湿的能力 ,加速试验结果稳定性良好。结论甲状腺薄膜包衣片的稳定性明显优于其糖衣片     

盘龙七片薄膜包衣工艺研究

目的研究盘龙七片的薄膜包衣技术,提高其稳定性。方法针对该品种的自身特点,通过正交实验摸索薄膜包衣工艺的最佳条件,并通过崩解度、耐温、耐湿稳定性实验,考察盘龙七片采用薄膜包衣与糖衣的稳定性。结果薄膜包衣可提高盘龙七片的储存期稳定性。结论盘龙七薄膜衣片质量优于其糖衣片。     

养血安神片薄膜包衣片的制备及稳定性考察

目的:研制养血安神薄膜包衣片,提高其稳定性.方法:以加速试验考察养血安神薄膜包衣片与糖衣片的稳定性.结果:与传统的糖衣片比较,养血安神薄膜包衣片可以明显缩短崩解时限,加速试验结果表明稳定性良好.结论:养血安神薄膜包衣片的稳定性良好.     

复方丹参片薄膜包衣工艺研究

目的将复方丹参片糖衣片改为薄膜衣片。方法以羟丙基甲基纤维素为主要成膜材料包衣,将生产的复方丹参薄膜衣片与糖衣片同时进行稳定性考察、比较。结果复方丹参薄膜衣片在抗湿性、硬度、稳定性、外观等方面均优于糖衣片。结论所用方法简单、工艺成熟。     

复方利血平氢氯噻嗪片薄膜包衣工艺研究

目的通过薄膜包衣工艺条件的筛选，提高复方利血平氢氯噻嗪片的稳定性。方法通过试验摸索薄膜包衣的最佳工艺条件，并通过影响因素试验、加速试验和长期稳定性试验，比较薄膜衣片及糖衣片对复方利血平氢氯噻嗪片理化性质的影响。结果薄膜包衣片的稳定性优于糖衣片。结论复方利血平氢氯噻嗪片采用包薄膜衣比包糖衣稳定。     

水性薄膜包衣技术在骨仙片生产的工艺研究

目的确定骨仙片水性薄膜包衣工艺方法。方法采用水性薄膜包衣技术,考察骨仙薄膜衣片和骨仙糖衣片包衣工艺,比较其外观、水分、崩解时限、抗热性、抗湿性及抗磨性等质量因素。结果实验结果表明,骨仙薄膜衣片,其外观、崩解时限、抗热性、抗湿性、抗磨性均优于其糖衣片。结论骨仙片水性薄膜包衣工艺可替代其糖衣工艺。     

丙戊酸钠薄膜衣片的制备及稳定性研究

目的研究丙戊酸钠薄膜衣片的制备方法。方法分别用全水型和醇溶型薄膜包衣预混剂对该素片进行包衣,与该品种同规格糖衣片同时进行稳定性考察比较。结果用全水型和醇溶型薄膜包衣预混剂对该产品素片进行包衣后,当增重达到（3．5±0．3）％时,本品6个月时的水分含量分别为6.3％、6．6％,糖衣片为8．9％,其他项目比糖衣片也显出一定的优势,且均符合规定。结论按该工艺生产的丙戊酸钠薄膜衣片符合质量标准要求,工艺稳定可靠,适合大生产需要。     

薄膜包衣片替代糖衣片是大势所趋

传统的包衣口服片剂药物，十之八九会是糖衣片，但近年来，用薄膜包衣片替代糖衣片已成大势所趋。这是因为糖衣片的不足之处太多了。糖衣片的主要辅料成分是国外已淘汰的滑石粉。使用滑石粉的糖衣片往往使药片的片芯重量增大50％-100％，造成病患服用大量与药物成份不相干的辅料。薄膜包衣则是一种新型的包衣工艺，是直接在片芯外面包上一层薄薄的稳定性很好的膜。目前国际上使用最多、最名的薄膜包衣材料是来自美国的品牌“欧巴代”。     

Development and evaluation of the tablets coated with the novel formulation termed thin-layer sugarless coated tablets

The purpose of this study was to develop and evaluate the thin-layer sugarless coated tablets containing Vitamin C, Vitamin E, Vitamin B2, calcium pantothenate, and L-cysteine. As a result of the formulation study, three coating layers, 2% under coating (UC), 38% build-up coating (BC), and 5% syrup coating (SC) were necessary for sufficient impact toughness, elegant appearance, and improvement of appearance stability after storage at 25 degrees C/75% RH for 6 months under open conditions. We demonstrated that the thin-layer sugarless coated tablets are superior to the sugar-coated tablets in terms of small tablet size and stability of calcium pantothenate. It was due to the coating method, the continuous spray mist method, which can minimize the thicknesses of coating layers and the moisture content in the tablets. We also demonstrated that the thin-layer sugarless coated tablets are superior to the film-coated tablets in terms of masking ability of the unpleasant odor and the appearance, stability of the appearance, and low hygroscopicity. It was due to the dense, opaque, and stable coating layers mainly consist of erythritol. We revealed that thin-layer sugarless coated tablets have both advantages of film-coated tablets and sugar-coated tablets.     

Film-coated zinc sulphate tablets and the effect of humidity on tablet properties

Preparation of film-coated zinc sulphate tablets and the effect of relative humidity and aging on the physical properties of these coated tablets were investigated in this study. Shellac; Eudragit E and L, hydroxypropyl methylcellulose (HPMC) and HPMC-Eudragit E mixture were used as film-forming materials. As zinc sulphate has efflorescent properties, the effect of humidity on the coated tablets was studied and physical stability tests were carried out. Coated tablets were kept in bottles and in open petri-dishes at different relative humidities (30, 55 and 85%) at room temperature over 12 weeks, and the weight loss, hardness, and disintegration times of these tablets were followed. Findings indicated that film-coated zinc sulphate tablets having good tablet quality can be prepared using the formulations (F-VI) HPMC-Eudragit E mixture and (F-III) Eudragit E as coating materials. Thus, the effect of relative humidity on tablet properties can be reduced.     

全水型薄膜包衣预混剂在复方丹参片生产中的应用研究

目的研究全水型薄膜包衣技术在复方丹参片生产中的应用,提高复方丹参片的质量稳定性。方法进行加速试验,比较复方丹参片全水型薄膜衣片与醇溶性薄膜衣片的综合质量和稳定性。结果全水型薄膜包衣片外观明显优于醇溶性薄膜衣片,在稳定性考察过程中含量测定和崩解时限均无明显变化。结论全水型薄膜包衣预混剂可用于复方丹参片的包衣生产。     

Development of controlled release oral drug delivery system by membrane-coating method-I

In order to develop a controlled-release oral drug delivery system (DDS) which sustains the plasma acetaminophen (AAP) concentration for a certain period of time, microporous membrane-coated tablets were prepared and evaluatedin vitro. Firstly, highly water-soluble core tablets of AAP were prepared with various formulations by wet granulation and compression technique. Then the core tablets were coated with polyvinylchloride (PVC) in which micronized sucrose particles were dispersed. Effect of formula compositions of core tablets and coating suspensions on the pharmaceutical characteristics such as drug release kinetics and membrane stability of the coated tablets was investigatedin vitro. AAP was released from the coated tablets at a zero-order rate in a pH-independent manner. This independency of AAP release to pH change from 1.2 to 7.2 is favorable for the controlled oral drug delivery, since it will produce a constant drug release in the stomach and intestine regardless of the pH change in the GI tract. Drug release could be extended upto 10 h according to the coating condition. The release rate could be controlled by changing the formula compositions of the core tablets and coating suspensions, coat weight per each tablet, and especially PVC/sucrose ratio and particle size of the sucrose in the coating suspension. The coated tablets prepared in this study had a fairly good pharmaceutical characteristicsin vitro, however, overall evaluation of the coated tablets should awaitin vivo absorption study in man.     

右旋糖酐铁糖衣片改为薄膜衣片生产工艺探讨

目的提高右旋糖酐铁糖衣片的溶出度和防潮性能,使其在有效期内能够保持质量稳定,符合中国药典规定。方法将右旋糖酐铁片由糖衣片改为薄膜衣片。结果薄膜衣片溶出度和防潮性能明显提高,在留样考察期内,薄膜衣片溶出度和防潮性能无明显改变,产品在有效期内质量始终满足中国药典要求。结论按该工艺生产的右旋糖酐铁片质量稳定可靠,改进的薄膜包衣工艺适合大生产要求。     

Evaluation ofin-vitro dissolution andin-vivo absorption for two different film-coated pellets of clarithromycin

The aim of this study was to compare two formulations of film-coated pellets containing clarithromycin after single oral dose study in healthy male volunteers. Two formulations with different coating polymers were prepared: formulation-1 (F-1) was prepared by incorporating three kinds of pH-dependent gradient-release coated pellets into capsules and formulation-2 (F-2) was prepared by coated with an insoluble semiosmotic film. Release profiles of film-coated pellets were evaluated using paddle method under different conditions. Pharmacokinetic profiles of these formulations were obtained in three healthy male volunteers and compared to commercially available immediate release (IR) tablets. The relative bioavailability based on the AUC0-24h was found to be 96.2% and 58.7% for F-1 and F-2 compared with IR, and the Tmax was delayed.     

无时滞非达霉素肠溶片的制备及溶出评价

目的: 制备无时滞非达霉素肠溶片,考察其溶出特性。方法: 采用湿法制粒工艺,通过正交实验进行片芯优化,以甲基丙烯酸与丙烯酸乙酯共聚物为肠溶包衣材料,制备非达霉素肠溶片,以体外释放度为指标,考察其溶出行为。结果: 片芯中羟丙甲纤维素和交联羧甲基纤维素钠的用量分别为1.2%和4.5%,微晶纤维素和淀粉的比例为3:1,肠溶层共聚物的比例为50%时,制备的非达霉素肠溶片在pH1.0盐酸中2h释放度小于10%,在pH4.5醋酸盐缓冲液中可以崩解释放,在pH6.8磷酸盐缓冲液中快速释放,10min释放度大于60%。结论: 制备的非达霉素肠溶片与普通肠溶片相比无时滞效应,有望进行工业化生产。     

Drug release from film-coated chlorpheniramine maleate nonpareil beads: effect of water-soluble polymer, coating level, and soluble core material

The purpose of this research was to use a new drug release model to study the effects of formulation parameters on drug release from a film-coated chlorpheniramine (CPM) nonpareil system. The film-coated CPM nonpareils were prepared by using a fluid bed apparatus. A hydroxylpropylmethylcellulose (HPMC) solution was blended with an aqueous ethylcellulose dispersion (Surelease) to adjust the permeability of the film. The apparent permeability of samples was obtained from dissolution data using a previously reported drug release equation. The apparent permeability was plotted versus the film coating level or the HPMC concentration in the film. When the natural logarithm of the apparent permeability versus coating level was graphed, a biphasic plot was observed in the group without HPMC in the film, showing the occurrence of a critical coating level. It was suggested that a mechanically formed porous film (due to an incomplete coating) could change to a nonporous film after the bead was completely coated. However, in the group that contained 12% HPMC in the film, the critical coating level was not observed. A porous film, formed by the leaching out of the water-soluble polymer, would not change to a nonporous film even after the bead is completely coated. Through a mathematical derivation, the decrease of apparent permeability versus coating level was related to the reduction of the total hole area. The apparent permeability was found to increase with the HPMC concentration. After a critical concentration was reached, the further addition of HPMC into the film caused a rapid increase in apparent permeability. The critical HPMC concentration was related to a minimum domain formation concentration (MDFC). A rapid increase of the drug release was observed when the dissolution profile of a sample made from a regular sugar nonpareil core (soluble) was compared with the sample made from a precoated nonpareil core (insoluble), which suggests that the drug release can be enhanced by the dissolution of the core. A minimum concentration of the HPMC was required to effectively modify permeability of the film. The critical coating level and critical concentration of HPMC can be determined from the apparent permeability plot using a previously published equation. The dissolution of a soluble core can greatly enhance the release of the drug from the nonpareil system.     

Drug Release from Film-Coated Chlorpheniramine Maleate Nonpareil Beads: Effect of Water-Soluble Polymer,Coating Level,and Soluble Core Material

The purpose of this research was to use a new drug release model to study the effects of formulation parameters on drug release from a film-coated chlorpheniramine (CPM) nonpareil system. The film-coated CPM nonpareils were prepared by using a fluid bed apparatus. A hydroxylpropylmethylcellulose (HPMC) solution was blended with an aqueous ethylcellulose dispersion (Surelease) to adjust the permeability of the film. The apparent permeability of samples was obtained from dissolution data using a previously reported drug release equation. The apparent permeability was plotted versus the film coating level or the HPMC concentration in the film. When the natural logarithm of the apparent permeability versus coating level was graphed, a biphasic plot was observed in the group without HPMC in the film, showing the occurrence of a critical coating level. It was suggested that a mechanically formed porous film (due to an incomplete coating) could change to a nonporous film after the bead was completely coated. However, in the group that contained 12% HPMC in the film, the critical coating level was not observed. A porous film, formed by the leaching out of the water-soluble polymer, would not change to a nonporous film even after the bead is completely coated. Through a mathematical derivation, the decrease of apparent permeability versus coating level was related to the reduction of the total hole area. The apparent permeability was found to increase with the HPMC concentration. After a critical concentration was reached, the further addition of HPMC into the film caused a rapid increase in apparent permeability. The critical HPMC concentration was related to a minimum domain formation concentration (MDFC). A rapid increase of the drug release was observed when the dissolution profile of a sample made from a regular sugar nonpareil core (soluble) was compared with the sample made from a precoated nonpareil core (insoluble), which suggests that the drug release can be enhanced by the dissolution of the core. A minimum concentration of the HPMC was required to effectively modify permeability of the film. The critical coating level and critical concentration of HPMC can be determined from the apparent permeability plot using a previously published equation. The dissolution of a soluble core can greatly enhance the release of the drug from the nonpareil system.