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Drug Product Stability

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The long-term stability of drug products is critical to ensuring their quality, safety, and effectiveness over time. Stability directly influences a product's ability to maintain its intended characteristics, ensuring it performs as expected during its intended shelf life. Key attributes such as drug potency, impurities, dissolution, and other physicochemical measures of performance are tested to assess stability. These parameters indicate how well the product retains its quality over time and...

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Generic intravenous (IV) drugs are considered bioequivalent to their branded counterparts due to their 100% bioavailability upon administration. However, variations in stability among different drug products can significantly influence their therapeutic performance, even if they are pharmaceutically equivalent.Cefuroxime, a prophylactic antimicrobial, is often used as a single-dose IV injection for patients undergoing coronary artery bypass grafting surgery. A 3 g dose typically provides...

In Vitro Drug Dissolution: Compendial Testing Models I

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Basics of compounding: potency and stability testing.

¹International Journal of Pharmaceutical Compounding, Edmond, Oklahoma 73034, USA. lallen@ijpc.com

International Journal of Pharmaceutical Compounding

|September 20, 2013

Summary

This summary is machine-generated.

Potency testing measures drug strength, while stability testing determines shelf-life. Understanding the difference is crucial for quality assurance in compounded preparations.

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Area of Science:

Pharmaceutical Sciences
Analytical Chemistry

Background:

Potency tests quantify the active drug in a sample.
Stability tests establish expiration or beyond-use dates for products.

Purpose of the Study:

To clarify the distinctions between potency and stability testing.
To emphasize the importance of appropriate methods for each test.
To highlight the role of these tests in quality assurance for compounded preparations.

Main Methods:

Potency determination may use non-stability-indicating methods.
Stability determination requires stability-indicating methods.
Stability-indicating methods can assess both potency and stability.

Main Results:

A key difference lies in the requirement for stability-indicating methods.
Stability-indicating methods offer comprehensive analysis for both potency and stability.
Proper method selection is critical for accurate results.

Conclusions:

Compounding pharmacists must understand the differences between potency and stability tests.
Integrating these tests into quality-assurance programs is essential.
Accurate testing ensures the safety and efficacy of compounded preparations.