Dosage Forms

Microspheres of Eudragit RL were developed for colonic delivery of albendazole. The effects of polymer concentration, stirring rate, and concentration of emulsifier on particle size and drug loading were studied. A comparative in vitro drug release study of the optimized formulation was carried out.

Size reduction of materials through comminution is employed in many industries, including agrochemicals, minerals, ceramics and pharmaceuticals. The reasons for particle size reduction depend on the industry in question. Within the pharmaceutical industry, a large percentage of products are formed from powders and undergo processing to improve dosage form properties. Particle size reduction prior to compacting to tablets can aid with dissolution and homogeneity. Such processing of powders is, in part, dependent on their mechanical properties and balancing these properties is crucial in achieving desired manufacturing performance. Generally, pilot-scale milling trials are run to determine the most effective and efficient mill and operating conditions for each material. These trials, however, require relatively large quantities of material as well as time, and are normally run in early development when sufficient material becomes available. Hence, it would be highly beneficial to identify a physical property..

A discussion of the validation and operation of two commercially available vapor-phase hydrogen peroxide decontamination systems is presented, based on a hands-on examination of both systems.

With creative engineering and sophisticated chemistry, industry scientists offer big solutions for attaining small particle sizes and narrow distributions.

Freeze pelletization is a new and simple technique for producing spherical pellets for pharmaceutical use.

The authors review current industry practices and regulatory expectations for the aseptic processing of sterile drugs. They compare and outline critical issues in current manufacturing technology and capabilities with regulatory requirements.

Using dimensionless analytical models, the authors establish the relationships among the essential parameters of a kneading complexation process.

Evaluations have shown, in most cases, visual observations are sensitive enough to verify equipment cleanliness. An experiment was conducted to explore the possibility of using a visible-residue limit as an acceptable cleaning limit in a pharmaceutical research facility, including an evaluation of the limits and subjectivity of ?visually clean? equipment.

Big Pharma is ramping up capital spending in parenteral manufacturing at the same time that contract manufacturers are completing their own major investment programs.

Transdermal drug technology specialists are meeting demands for methods that can painlessly deliver larger molecules in therapeutic quantities.

Single-use products enhance sterile filtration by making it easier to maintain sterility and reduce cross-contamination risks.

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The authors suggest a design strategy for an aseptic process simulation that focuses on the basic repeating unit of the process, establishing alert and action criteria for the unit itself, and using worst-case simulations to establish routine operational parameters for the manufacturing process.

A straightforward approach reveals how the probability of passing the USP content uniformity test can be calculated for tablets and capsules.

In this final part of a series of three articles, the results from experiments involving cohesive materials are discussed in terms of mixing performance, agglomerate comminution, and lubrication of powder mixtures.

This article reviews various physicochemical approaches that may be employed to enhance absorption following oral administration of solid dosage forms in humans. This article also examines strategies based on capitalizing or neutralizing physiological processes.

A novel probe design can reduce the powder-sample density variance such that moisture and solvent levels can be accurately modeled and predicted in process.

The results of forced degradation studies indicate the need for alternatives to valerophenone as an internal standard calibration for quantifying ibuprofen in bulk drug and tablet assay samples.

The electronic tongue technology provides a technically suitable and cost-effective method for screening and directing taste formulation, while eliminating both safety concerns and subjective bias.

Pharmaceutical Science & Technology News

In part two of a series of three articles, mixing rates and mechanisms are examined using rectangular bin blenders and two free-flowing mixtures.

The limitation-of-risks (LR) method can be used as an engineering tool in risk assessment work for the identification, minimization, and evaluation of potential airborne risks, and for the identification of adequate monitoring points.

The role of microbial testing to ensure the sterility of aseptically filled sterile products is explained, from the product development phase to in-process monitoring to finished product testing.

Pharmaceutical Science & Technology News

Pharmaceutical Science & Technology Innovations

pharmaceutical science and technology news

Added functionality excipients facilitate the development of novel drug delivery methods and improve processing techniques.

Currently, high-production rates and continuous production processes favor existing tableting technologies. However, if tablet development becomes rate-limiting in the future, alternative technologies may prove attractive.

Some of the common problems faced by formulators and how using ion exchange resins may be able to solve them are discussed.

Recent advances in spray-drying technology have led to the production of new directly compressible lactose grades with distinct advantages.