Influence of dissolution media pH and USP1 basket speed on erosion and disintegration characteristics of immediate release metformin hydrochloride tablets.

abstract：:In the current study, we demonstrate a structured approach to downstream process development for spray dried amorphous solid dispersions. Direct compression is generally not suitable due to typically poor flow of spray dried powders in tablets. Roller compaction (RC) is therefore the method of choice to enable spray d...

journal_title：Pharmaceutical development and technology

authors： Henriques J,Moreira J,Doktorovová S

更新日期：2021-01-04 00:00:00

abstract：:The main objective of the present study was to improve bioavailability of diltiazem hydrochloride and decrease the frequency of dosage form administration by increasing the encapsulation efficiency of the drug, residence time of the dosage form at the site of absorption and sustained release of the drug from the deliv...

journal_title：Pharmaceutical development and technology

authors： Sultana Y,Mall S,Maurya DP,Kumar D,Das M

更新日期：2009-01-01 00:00:00

abstract：:The fluorescence polarization technique was used to measure the microviscosity of a series of phospholipid-based emulsions. Fourteen different oil-in-water emulsions containing 20% medium chain length triglycerides, various concentrations and types of phospholipids, and 2.2% glycerin were prepared by microfluidization...

journal_title：Pharmaceutical development and technology

authors： Zhang X,Kirsch LE

更新日期：2004-01-01 00:00:00

abstract：:Seven potential impurities, including by-products, starting materials and intermediates were identified in pharmaceutical substance quetiapine fumarate and characterized by spectroscopic methods (MS, IR, NMR). Based on these methods the structures of the impurities were assigned or confirmed as: impurity I: 2-(phenylt...

journal_title：Pharmaceutical development and technology

authors： Stolarczyk EU,Kaczmarek L,Eksanow K,Kubiszewski M,Glice M,Kutner A

更新日期：2009-01-01 00:00:00

abstract：:This study examines the influence of off-bottom clearance on size and size distribution of pellets produced during melt pelletization at different postmelt impeller speeds and binder concentrations using lactose and polyethylene glycol. Melt pelletization of lactose powder 450 M in an 8-liter highshear mixer, the floo...

journal_title：Pharmaceutical development and technology

authors： Heng PW,Wan LS,Wong TW

更新日期：1999-01-01 00:00:00

abstract：:The objective of this study was to prepare pellets of thyme (Thymus vulgaris L.), stinging nettle (Urtica dioica L.) and sage (Salvia officinalis L.) dry extracts by extrusion-spheronization technique to improve technological properties and investigate dissolution profiles of pellets covered different levels of pH-sen...

journal_title：Pharmaceutical development and technology

authors： Kaledaite R,Bernatoniene J,Dvořáčková K,Gajdziok J,Muselík J,Pečiūra R,Masteikova R

更新日期：2015-11-01 00:00:00

abstract：:The purpose of this study was to investigate the effect of the composition of a binary powder mixture on the bonding index, the brittle fracture index, and the strain index, as defined by Hiestand. The studies involved tensile strength and dynamic indentation hardness determinations of square compacts, the solid fract...

journal_title：Pharmaceutical development and technology

authors： Majuru S,Wurster DE

更新日期：1997-11-01 00:00:00

abstract：:The aim of this study was to prepare electrospun polyvinylpyrrolidone (PVP)/2-hydroxypropyl-β-cyclodextrin (HPβCD) nanofiber mats and to incorporate plai oil (Zingiber Cassumunar Roxb.). The plai oil with 10, 20 and 30% wt to polymer were incorporated in the PVP/HPβCD solution and electrospun to obtain nanofibers. The...

journal_title：Pharmaceutical development and technology

authors： Tonglairoum P,Chuchote T,Ngawhirunpat T,Rojanarata T,Opanasopit P

更新日期：2014-06-01 00:00:00

abstract：:Two polymorphs and three solvates of fluconazole were isolated and characterized by x-ray powder diffractometry, IR spectroscopy, differential scanning calorimetry (DSC), thermogravimetry, and their dissolution rates. The different forms were prepared by crystallization of the original powder in different solvents at ...

journal_title：Pharmaceutical development and technology

authors： Alkhamis KA,Obaidat AA,Nuseirat AF

更新日期：2002-11-01 00:00:00

abstract：:Microporous polymeric matrices prepared from poly(ɛ-caprolactone) [PCL] were evaluated for controlled vaginal delivery of the antiprotozoal agent (tinidazole) in the treatment of the sexually transmitted infection, trichomoniasis. The matrices were produced by rapidly cooling co-solutions of PCL and tinidazole in acet...

journal_title：Pharmaceutical development and technology

authors： Fernando HV,Chan LL,Dang N,Santhanes D,Banneheke H,Nalliah S,Coombes AGA

更新日期：2019-03-01 00:00:00

abstract：:Effects of various factors, such as light intensity, polarizability of n-alcohol solvents, addition of colorants, and viscosity of solutions on the kinetics of the photoisomerization of therapeutically effective E-isomer of sorivudine to its less effective Z-isomer were studied. Solutions of known concentrations of E-...

journal_title：Pharmaceutical development and technology

authors： Desai D,Li D,Janjikhel R,Lang B,Jain N

更新日期：2001-01-01 00:00:00

abstract：:This paper explores the utility of aqueous solubility of structurally similar drugs in predicting optimum conditions for extrusion and spheronization of pellets using response surface methodology. Pharmacologically active xanthine derivatives exhibiting widely varying aqueous solubility were used to determine optimum ...

journal_title：Pharmaceutical development and technology

authors： Hileman GA,Upadrashta SM,Neau SH

更新日期：1997-02-01 00:00:00

abstract：:The objectives of this research were to evaluate the stability of lercanidipine in solution state and solid state and explore the compatibility of drug with oils, surfactants and cosurfactants as excipients. The effect of pH on the degradation in solution state was studied through pH-rate profile of lercanidipine in c...

journal_title：Pharmaceutical development and technology

authors： Parmar N,Amin S,Singla N,Kohli K

更新日期：2012-11-01 00:00:00

abstract：:Dynamic image analysis (DIA) was used to measure particle diameter (D50) of in-process samples removed during fluid bed coating. A single, rapid measurement gave D50 to within 4 mum. Samples removed at intervals of 2% weight gain were readily distinguishable by DIA and by their drug release profiles. Drug release was ...

journal_title：Pharmaceutical development and technology

authors： Heinicke G,Schwartz JB

更新日期：2006-01-01 00:00:00

abstract：:The principal purpose of the present study was to prepare and characterize a complex drug delivery system consisting of Nafarelin-poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) nanoparticles (NPs) in combination with sodium alginate/poloxamer 407 in situ gel. Nafarelin-loaded PHBV NPs were prepared via double em...

journal_title：Pharmaceutical development and technology

authors： Alizadeh B,Bahari Javan N,Akbari Javar H,Khoshayand MR,Dorkoosh F

更新日期：2018-02-01 00:00:00

abstract：CONTEXT:Bioadhesiviness of polyacrylic acid polymers make them promising hydrogels to design topical drug delivery systems, allowing a close contact with biological substrate as well as an enhanced local concentration gradient, both factors that may improve the biological performance of the drugs. AIM:Texture and bioa...

journal_title：Pharmaceutical development and technology

authors： Calixto G,Yoshii AC,Rocha e Silva H,Stringhetti Ferreira Cury B,Chorilli M

更新日期：2015-06-01 00:00:00

abstract：:Taking into account possible irritation of the skin upon contact with naproxen (NPX) crystals and lower bioavailability after administration of the suspended or ionized drug, the aim of the work was to design and characterize novel and easy-to-formulate gels with the entirely dissolved drug in the acidic form. The for...

journal_title：Pharmaceutical development and technology

authors： Osmałek T,Milanowski B,Froelich A,Górska S,Białas W,Szybowicz M,Kapela M

更新日期：2017-06-01 00:00:00

abstract：:A paddle method for measurement of the disintegrating time of orally disintegrating tablets with rizatriptan benzoate as a model drug was evaluated. The paddle method employed a dissolution test assembly with tablets immersed in disintegrating medium through a fastened sinker. Paddle stirring rate, opening of the sink...

journal_title：Pharmaceutical development and technology

authors： Que L,Wu W,Cheng X,Hu T

更新日期：2006-01-01 00:00:00

abstract：:The aim of this study was to prepare various types of solid dispersions (SDs) by the hot-melt extrusion technique. Next, process analytical technology (PAT) such as Fourier transform-infrared (FT-IR) and Raman and near infrared (NIR) spectroscopy were applied to determine the solubilization effect. The SDs and its tab...

journal_title：Pharmaceutical development and technology

authors： Hwang I,Renuka V,Lee JH,Weon KY,Kang CY,Lee BJ,Park JB

更新日期：2020-06-01 00:00:00

abstract：:Submicron colloidal suspensions of poly(epsilon-caprolactone) (PCL) were prepared by the solvent displacement method, using either the conventional form or a new recirculation device. In the latter case, a process that allows the recirculation of the aqueous phase into a device, providing a continuous flow, is propose...

journal_title：Pharmaceutical development and technology

authors： Piñón-Segundo E,Ganem-Quintanar A,Rafael Garibay-Bermúdez J,Juan Escobar-Chávez J,López-Cervantes M,Quintanar-Guerrero D

更新日期：2006-01-01 00:00:00

abstract：:Preterm labor is the main cause of death and serious illness of both infants and pregnant women in Africa and worldwide. Parenteral and oral salbutamol sulfate as a B2 antagonist has been used for the treatment of preterm labor. The study aims are to formulate salbutamol sulfate non-invasive vaginal bioadhesive tablet...

journal_title：Pharmaceutical development and technology

authors： El-Enin ASMA,Elbakry AM,Hosary RE,Lotfy MAF

更新日期：2020-10-01 00:00:00

abstract：:Substituting spacer by another in noninvasive ventilation (NIV) involves many variables, e.g. total emitted dose (TED), mass median aerodynamic diameter (MMAD), type of spacer, total lung deposition and total systemic absorption, which must be adjusted to ensure patient optimum therapy. Data mining based on artificial...

journal_title：Pharmaceutical development and technology

authors： Hussein RRS,M A Ali A,Salem HF,Abdelrahman MM,Said ASA,Abdelrahim MEA

更新日期：2017-11-01 00:00:00

abstract：:The purpose of this research was to design and develop a novel controlled-release bead formulation for oral administration with buffer crystals as a carrier for loading of fenoldopam mesylate, an intravenous antihypertensive agent, which provides an in vitro release rate of 30-50 mg/hr for 6-8 hr. Buffer crystals were...

journal_title：Pharmaceutical development and technology

authors： Venkatesh GM

更新日期：1998-11-01 00:00:00

abstract：PURPOSE:To evaluate four novel metrics that compare dissolution profiles and assess their performance characteristics by comparing dissolution profiles of FAST and SLOW immediate release metoprolol tartrate tablets. METHODS:The four novel metrics (rho, rho m, delta a, and delta s), along with f2, were applied to disso...

journal_title：Pharmaceutical development and technology

authors： Seo PR,Shah VP,Polli JE

更新日期：2002-05-01 00:00:00

abstract：:A carbopol 934P-based drug delivery system (AmDDS) was developed to achieve the dual-controlled delivery of Nonoxynol-9 (N-9), a spermicidal agent, and EDTA, a potentiator of spermicidal activity. This gel-type system made intimate contact with vaginal mucosa and maintained an effective drug concentration within the v...

journal_title：Pharmaceutical development and technology

authors： Lee CH,Chien YW

更新日期：1996-07-01 00:00:00

abstract：:The objective of this investigation was to formulate ocular inserts of gatifloxacin sesquehydrate to achieve controlled drug release. Drug reservoir was prepared using hydrophilic polymers, namely polyvinyl alcohol and polyvinyl pyrrolidone. The rate controlling membrane was prepared using hydrophobic ethyl cellulose ...

journal_title：Pharmaceutical development and technology

authors： Patel UL,Chotai NP,Nagda CD

更新日期：2012-01-01 00:00:00

abstract：:A preliminary study of the feasibility of using near-infrared spectroscopy (NIRS) for the offline simultaneous determination of metoprolol tartrate (MTP) and hydrochlorothiazide (HTZ) in powders and tablets has been carried out. An industrial tableting process was simulated using an instrumented tablet press replicato...

journal_title：Pharmaceutical development and technology

authors： Vranic BZ,Vandamme TF

更新日期：2015-01-01 00:00:00

abstract：:The physical stability of amorphous solid dispersions (SDs) is influenced by their storage conditions. The goal of this work was to investigate the factors affecting the recrystallization of drugs in SDs after storage under conditions of high temperature and high humidity. SDs of three drugs (dipyridamole, nifedipine ...

journal_title：Pharmaceutical development and technology

authors： Shibata Y,Fujii M,Suzuki A,Koizumi N,Kanada K,Yamada M,Watanabe Y

更新日期：2014-06-01 00:00:00

abstract：:The general solubility equation (GSE) is the state-of-the-art method for estimating the aqueous solubilities of organic compounds. It is an extremely simple equation that expresses aqueous solubility as a function of only two inputs: the octanol-water partition coefficient calculated by readily available softwares lik...

journal_title：Pharmaceutical development and technology

authors： Alantary D,Yalkowsky S

更新日期：2018-09-01 00:00:00

abstract：:A colchicine release system utilizing biodegradable poly(phosphazenes) was investigated in vitro for intra-articular administration. Polymer degradation and drug release studies were performed on colchicine-loaded poly(phosphazenes) containing either imidazolyl (I-PPHOS) or ethyl glycinato (EG-PPHOS) side chain substi...

journal_title：Pharmaceutical development and technology

authors： Ibim SM,el-Amin SF,Goad ME,Ambrosio AM,Allcock HR,Laurencin CT

更新日期：1998-02-01 00:00:00