Compaction Analysis Before Costly Scale-Up
Pharma Tech Outlook

Compaction Analysis Before Costly Scale-Up

Pharma Tech Outlook | Tuesday, October 13, 2026

Tablet development can become expensive well before a formulation reaches a production press. Early in development, there may be very little drug substance available for testing. A change in excipients can affect how a formulation behaves under compression. Even a formulation that performs well at one pressure may respond differently when the process changes. This makes early compaction analysis especially useful. With only a few grams of powder, development teams can begin to understand formulation behavior, process fit, readiness for scale-up and where problems may appear later.

Tablet strength alone does not provide the full picture. Teams also need to understand compactibility and compressibility under different conditions. Tabletability can then be compared as materials or formulations change. USP <1062> provides a recognized framework for this analysis, but development questions often go beyond it. Lubrication can influence sticking and ejection. Solid fraction can affect friability and disintegration. Looking at only one strength curve may make it difficult to tell whether a problem comes from the material or from the process.

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Dry granulation adds another consideration. During roller compaction, the material has already been compacted once before it reaches final tablet compression. That earlier step can change how the powder behaves when it is compressed again. A direct-compression study may not reveal that difference. Development teams therefore need to see how the material responds after this first compaction without using large amounts of API in full-scale trials.

“Gamlen Tableting’s testing service combines USP <1062> compaction analysis with lubrication assessment, then extends the work into small-scale tablet manufacture and production troubleshooting.”

Small-batch manufacture can take that work a step further. It allows teams to move from controlled compaction data into a processing sequence that is closer to actual tablet manufacture. If something needs to change, they can find out while the quantities involved are still small and changing direction is less costly.

Compaction analysis also has a role when something goes wrong in production. A supplier may change, or the properties of the API may shift. Yet the reason for a tablet problem may not be obvious from the finished product. Testing materials under controlled conditions allows investigators to compare their behavior and see what has changed. Repeatable comparisons can help separate a supplier-related difference from an issue with the formulation, without relying on repeated production trials.

Timing matters here too. Data are most useful when they arrive in time to influence the next development or manufacturing decision. A detailed study has less practical value if the formulation team has already had to move ahead without the results.

For pharmaceutical teams, the value of compaction analysis lies in learning more while using less material. A useful system can work with small samples, show how materials behave under compression and relate those findings to processing conditions. Some questions, however, cannot be answered by compaction data alone. Access to small-scale processing and troubleshooting can help teams follow the problem further without moving straight to expensive production-scale work.

Gamlen Tableting provides this support through a service model focused on material characterization before scale-up. Its testing service combines USP <1062> compaction analysis with lubrication assessment. The work can then extend into small-scale tablet manufacture and production troubleshooting.

The laboratory uses small quantities of material and provides feedback as data are generated. It can also study dry-granulation behavior through controlled compaction work before a formulation moves to larger equipment. For teams working with scarce API or an uncertain formulation, this provides a way to answer more development questions before committing material and resources to full-scale experimentation.

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