Drug Development

The hydrophilic matrix system continues to be the most popular and widely used strategy to achieve extended drug release. Hypromellose (hydroxypropylmethylcellulose [HPMC]) is typically the polymer of choice for the rate-controlling carrier in these systems.

Preformulation represents an early-stage opportunity to facilitate the eventual movement of a drug substance into a commercial product. Strategies to optimize the preformulation process were outlined by Harry Brittain, institute director for the Center for Pharmaceutical Physics (Milford, NJ). He spoke at the PharmTech Annual Event in Somerset, New Jersey this week.

RNAi therapeutics company SR Pharma plc (London, UK) has developed a process that allows it proprietary liposomal-based siRNA formulations ?AtuRNAi? drugs to be stored at room temperature and reconstituted in one step.

Recombinomics (Pittsburgh, PA) is again urging the World Health Organization to fully release all H5N1 avian influenza sequences, claiming their release would improve the selection of vaccines by helping scientists to identify the origin of the isolates and predict sequence changes.

I always suspected that our purchasing manager had agreed to this just to save money . . .

Predictable outcomes lead to greater manufacturing efficiency and speed time to value.

CMOs account for 20–30% of biopharm production. Big Pharma also is filling the biologics supply chain.

The biggest single recent trend in outsourcing solid-dosage processing has been the movement toward discovery and synthesis of more potent active pharmaceutical ingredients.

The construction of a new oral solid form (OSF) plant is an important decision and a real challenge. The team in charge of the basic conceptual design has to ensure that the new plant will be up-to-date and efficient not only at start-up, but for the next 15–20 years. This means that the project must be able to adjust to capacity changes, product changes and technology changes. It sometimes seems like an impossible challenge.

Bioequivalence with the reference product is the only reliable measure of demonstrating the therapeutic equivalence of a generic product to the innovator product. Systematic and comprehensive innovator product characterization can be used to make generic product development easier. This involves characterization of API and quantification of the critical excipients. The latter contributes towards performance of the final dosage form. This article describes the capsule formulation of a poorly water-soluble drug, celecoxib, which contains sodium lauryl sulphate as a critical excipient. The importance of a decoding process aimed at developing a generic product that matches the innovator formulation in a discriminating dissolution method is demonstrated.

On April 28, the US Food and Drug Administration's Center for Drug Evaluation and Research (Rockville, MD) issued a Warning Letter to Pliva Hrvatska d.o.o., a subsidiary of Pliva d.d. (Zagreb, Croatia).

Animal testing and accounting can both be hazardous.

Using Bezier curves, an experimental process controller has been developed for biosynthesis applications in which the inactivity of a pH-sensitive enzyme must be decreased. By taking into account various control scenarios of pH and growth rate, as well as the physical and chemical characteristics of the environment, a suitable human-machine interface can be developed.

Indian suppliers of active pharmaceutical ingredients and dosage formulations expand in India, the United States, and Europe.

Manufacturing and formulation innovation spurs drug develop-ment, but raises new safety and quality issues.

The author explores the importance of the proposals to revise Annex 1 of the EU GMPs in the context of the desire for science-based, internationally respected GMPs. Commentary also is provided about the relationship between this annex and CEN–ISO cleanroom standards.

This review article discusses orally disintegrating tablets and their manufacturing technologies, development issues, and future trends.

The common crystal form of ibuprofen was changed to optimize processing and manufacturing properties. Six modified crystal forms were prepared and assessed for dissolution, morphology, particle size, density, thermal characteristics, powder x-ray diffractometry, flow properties, and tabletability.

Being the first to gain the most is a fundamental principle in the generics business because several companies compete to create generics of successful products going off patent. For a generics company to maintain revenue growth in a market in which product prices continue to fall, it must secure a continuous flow of new products, with quality and speed to market being key drivers. Thus, generics companies must be highly skilled in product and process development (1), the generics business, and achieving bioequivalence-the most critical development area.

New biocatalytic and chemocatalytic routes to chiral intermediates and developments in simulated-moving-bed and supercritical-fluid chromatography for resolving racemic mixtures.

The need to curb drug counterfeiting is spurring development of track-and-trace and product authentication technologies.

Performing D-value and population verification is critical in the acceptance criteria for allowing a new lot of biological indicators into a facility before acceptance and use of the lot in validation work or routine monitoring of sterilization cycles.

Absorption promoters and enhancers and enzyme inhibitors, either alone or in combination, can play an important role in improving the bioavailability of oral insulin.

Could compounds in chocolate yield new pharmaceutical approaches to major disorders?

All sectors of manufacturing are under continual pressure to bring new products to market quicker, stealing a march on the competition and maintaining their revenue stream.