Formulation and Drug Delivery

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The specialty excipients market in the United States, Western Europe, and China is valued at nearly $800 million. The authors discuss the opportunities and challenges in these markets by examining the product mix, supply base, and preferred production methods.

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Plastic has emerged gradually as a viable packaging material, even for sterile products. Acceptance of plastics has been encouraged by blow–fill–seal (BFS) technology, which provides scientific and commercial benefits. BFS technology has, however, brought new challenges for formulation-development scientists. This article highlights the specific concerns for the development of sterile liquid products and the formulation strategies to address these concerns.

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The authors investigated the influence of various particle size fractions of Tamarind seed polyose (TSP) on indomethacin (IND) release from matrix tablets. They assessed the TSP fractions for swelling, density, and flow properties and the IND matrix tablets for tensile strength, friability, and release profile. Release kinetics was evaluated using Higuchi and Peppas equations. The density and flow properties showed that the size fraction affects the suitability of TSP as an entrapment polymer. The release profile showed that the release of IND from TSP matrix is swelling dependent, thereby affecting the kinetics of release.

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Protein formulation specialists have long sensed that something big could be just around the corner. Over the past few decades, countless companies have attempted to bring to market new protein therapeutics that offer improvements-be they more patient friendly, more effective, or easier to manufacture-over traditional formulations. Earlier this year, the launch of Pfizer's "Exubera" pulmonary insulin met this anticipation head on. The fast-acting, inhaled-powder form of recombinant human insulin brought hope to the millions of diabetic patients waiting for an alternative to injections.

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There is a growing need for patient-compliant dosage forms within the cancer therapeutics and biotechnology areas. Ease of administration, enhanced therapeutic efficacy, and reduced side effects are factors that differentiate drug delivery products from conventional dosage forms and provide a competitive advantage. This article reviews salient trends in the parenteral drug delivery sector within the realms of a changing regulatory environment, drivers to growth, and recent advances in this field. Challenges associated with bringing parenteral drug delivery concepts to commercialization are discussed.

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Mefenamic acid has variable bioavailability and tabletting issues because of its hydrophobic nature and poor material characteristics. Recrystallization of mefenamic acid was performed from three different solvent–solvent mixtures under differing conditions. The crystals obtained were screened for the existence of new crystal properties or polymorphic forms, then characterized further.

High-containment manufacturing for highly potent active pharmaceutical ingredients (HPAPIs) represents a niche, but growing niche, in API manufacture. Strategies on serving this sector were discussed at a recent program, ?High-Potency Active Ingredients: Realizing the Opportunities,? organized by the Drug, Chemical, and Associated Technologies Association (Robbinsville, NJ) in conjunction with Pharmaceutical Technology.

Baltimore, MD (Sept. 10)-Researchers at Johns Hopkins University have devised a new controlled-delivery system that applies an electrical pulse to release drug molecules, nanoparticles, biopolymers such as peptides and proteins, and protein assemblies such as viruses from thin fabricated gold electrodes. Developers hope the technique will allow biocompatible implantable chips for precisely dispensing small amounts of drug into the body.

Washington, DC (Aug. 14)?A new report issued by the Pharmaceutical Research and Manufacturers of America identifies 418 drugs and vaccines developed through biotechnology. All of the biotechnology medicines and vaccines are now in clinical trials or awaiting approval by the US Food and Drug Administration (Rockville, MD).