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Before Method Validation: Signs Your Analytical Method Is Not Ready Yet
01
Sep
By No Comments

Before Method Validation: Signs Your Analytical Method Is Not Ready Yet

Analytical method validation should confirm that a method is fit for its intended purpose. It should not be the stage where fundamental method-development problems are discovered. Yet analytical procedures sometimes enter formal validation while questions remain around specificity, sample preparation, solution stability, robustness, chromatographic resolution, system suitability, or the intended analytical range. The result can […]
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Cleaning Validation and Cross-Contamination Risk: What You Cannot See Can Still Carry Over
18
Aug
By No Comments

Cleaning Validation and Cross-Contamination Risk: What You Cannot See Can Still Carry Over

In pharmaceutical development, a piece of equipment can look clean and still carry residues from the product manufactured before it. A thin film of active pharmaceutical ingredient (API), excipient, cleaning agent, degradation product, or microbial contamination may not be visible to the human eye. Yet if that residue remains on a product-contact surface, it may […]
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Rheology in Topical Formulations: Why Texture Is a Critical Performance Parameter
14
Aug
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Rheology in Topical Formulations: Why Texture Is a Critical Performance Parameter

Topical pharmaceutical products are expected to do more than contain the correct concentration of an active pharmaceutical ingredient (API). A cream, gel, ointment, or lotion must also maintain its physical structure, spread appropriately on the skin, deliver the drug consistently, remain stable throughout its shelf life, and provide an acceptable application experience. Many of these […]
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Choosing the Right Receptor Medium for IVRT and IVPT Studies
01
Aug
By No Comments

Choosing the Right Receptor Medium for IVRT and IVPT Studies

In vitro release testing (IVRT) and in vitro permeation testing (IVPT) are widely used to characterize topical and transdermal drug products throughout formulation development, quality assessment, and comparative performance studies. While parameters such as membrane selection, diffusion cell configuration, sampling intervals, and temperature control receive considerable attention, one experimental factor has an equally important influence […]
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Raw Material Variability: Why the Same Material Name Does Not Guarantee the Same Performance
21
Jul
By No Comments

Raw Material Variability: Why the Same Material Name Does Not Guarantee the Same Performance

Pharmaceutical formulation development depends not only on selecting the appropriate active pharmaceutical ingredient (API) and excipients but also on understanding the inherent variability of pharmaceutical raw materials. Although two materials may share the same pharmacopeial name, grade, or specification, they do not necessarily exhibit identical physicochemical characteristics or perform identically within a formulation. Differences in […]
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Method Readiness Before Validation: What to Check Before You Start the Protocol
18
Jul
By No Comments

Method Readiness Before Validation: What to Check Before You Start the Protocol

Analytical method validation is a critical requirement for demonstrating that a method is suitable for its intended purpose. However, one of the most common reasons for unsuccessful validation studies is not the validation protocol itself, it is inadequate method readiness before validation begins. Method validation is designed to confirm the performance of an already optimized […]
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Excipient Screening vs Excipient Synthesis: Which Problem Are You Actually Solving?
13
Jul
By No Comments

Excipient Screening vs Excipient Synthesis: Which Problem Are You Actually Solving?

Excipients play a fundamental role in pharmaceutical formulation development, influencing manufacturability, stability, drug release, bioavailability, patient acceptability, and overall product performance. Although many pharmaceutical products can be successfully developed using commercially available excipients, certain formulation challenges cannot always be resolved through conventional excipient selection alone. When formulation performance does not meet predefined development objectives, scientists […]
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