Previous Blogs

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By Birgit Mueller-Chorus, Ph.D.

August 05, 2021

Some pharmaceutical substances, such as proteins, monoclonal antibodies, enzymes, and vaccines, are unstable in solution. They can degrade, for example by enzymatic or hydrolytic reactions. Lyophilization (also called freeze-drying) is the most common approach to address this.* Lyophilization is the process of dehydrating a material at low temperature and reduced pressure. Absent water, the rates of degradative enzymatic/hydrolytic processes are reduced substantially, and thus drug product stability is improved.

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By Henry Zhang

February 08, 2021

Lyophilization (freeze drying) is the process of dehydrating a drug product at low temperature and reduced pressure. Absent water, degradation processes are greatly reduced; thus, it helps to enhance drug product stability. Moisture-sensitive drug products are often marketed in lyophilized form. For a primary package system, the selection of appropriate components is essential to prevent risks associated with alteration of the lyophilized drug product prior to reconstitution and use.

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By Deolinda Martins

February 02, 2021

Lyophilization (freeze drying) is the process of dehydrating a material at low temperature and reduced pressure. It is used to extend the shelf life of many biologic drug products. Absent water, degradation processes are greatly reduced. In any primary package system (i.e., vial, elastomer stopper, seal) for a lyophilized drug product, of utmost concern are leachables and volatile organic compounds that may migrate from the elastomer stopper into the lyophilized drug product, creating a risk to patient safety.

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By Eric Tan

October 19, 2020

Lyophilization (also called freeze drying) is the process of dehydrating a material at low temperature and reduced pressure. It is used to extend the shelf life of many biologic drug products. Absent water, drug metabolic degradation processes are greatly reduced. Clearly, it is crucial to know the water content of elastomer stoppers for vial-based primary packaging systems for lyophilized drug products.

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By Diego Zurbriggen

November 20, 2019

In its 95+ year history, West has developed and marketed a very large number of elastomeric formulations, each designed to address particular market demands. Over this time, various aspects of drug product quality have gained attention – a fact reflected in the numerous regulatory guidances that have been issued. An early focus of these guidances was extractables and leachables, followed closely by particulate matter and container closure integrity. Beyond these regulatory requirements, the market demands product portfolios that enable platforming and predictable, consistent product quality and performance.

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By Daria Miller

January 31, 2019

Lyophilization (freeze drying) is the process of dehydrating a material at low temperature and reduced pressure. It is used to extend the shelf life of many biologic drug products (> 400 FDA-approved); because absent water, the rates of degradative processes are reduced substantially. Essential to successful lyophilization, and subsequent rehydration, are use of proper containment and reconstitution systems.