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Basic Formulation Characterization by Stability Assessment (CAT#: STEM-B-0431-CJ)

Introduction

A biopharmaceutical formulation is a high-end product. It is tailored towards the specific drug substance, its specific characteristics and degradation profiles, and contains stabilizing excipients of various kinds. Knowing the characteristics of a biopharmaceutical formulation is not only relevant during the formulation exercise itself, but also when manufacturing aspects come into play.

Since drug molecules usually have different solid forms, including salts, polycrystals, eutectic, amorphous, hydrates and solvent compounds; moreover, different crystal forms of the same drug molecule may have significant differences in properties such as crystal structure, stability, producibility and bioavailability, which directly affect the efficacy and exploitability of the drug. If the best crystalline form is not well evaluated and selected for development, crystalline changes may occur in the late clinical stage, resulting in significant financial losses due to delayed marketing, and even more significant losses if the drug is withdrawn from the market due to crystalline changes after marketing.




Principle

Stability testing is the process by which pharmaceutical manufacturers observe their product over predetermined lengths of time in specific environmental conditions to determine if there is any change in the quality of the Active Pharmaceutical Ingredient (API) or Final Product (FP). When manufacturing pharmaceuticals and other regulated products, there are numerous factors that must be tested before the product is approved and released to the public for consumption.

A stability study is composed of many different tests and involves the careful handling and pulling of samples to precisely record their condition at various points in the study. The ICH recommends collecting stability data for at least three batches of product representative of the final quality of product that will be made to production scale. Criteria for evaluation during a stability study may include tests for: Degradation, Changes in PH, Dissolution, Assay, Moisture content and Microbial activity

Applications

Biopharmaceutica

Procedure

1. Prepare and store samples: Store samples under specified conditions, using temperature-controlled humidity chambers and walk-in stabilisation chambers to precisely control and maintain the required set points.
2. Draw samples to accurately record their condition at various points in the study.
3. Data from the study can be recorded using the monitoring system software.

Materials

• Sample: Tablet, Capsule, Ointment & More
• Equipment: Temperature-controlled humidity chambers

Notes

The ICH sets criteria for stability testing based on three different types of studies: long term studies (also referred to as real time), intermediate studies, and accelerated studies. These studies are conducted for different durations of time and are intended to measure a product’s condition at several different stages, such as the length of its proposed shelf life or how it reacts during short-term conditions (e.g. in transport).
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