Pharmaceutical Reverse Engineering Services
Formulation characterization and performance insight to understand how reference drug products work.
What is pharmaceutical reverse engineering?
Pharmaceutical reverse engineering is the systematic characterization of a reference, innovator or competitor drug product to understand how the formulation is designed, how it achieves its performance and which formulation or product attributes may be critical to that performance.
Rather than focusing only on what ingredients are present, pharmaceutical reverse engineering combines formulation science, analytical characterization, excipient knowledge and product performance testing. Depending on the development question, this may include evaluation of excipient functionality, dosage-form properties, dissolution or release behaviour, microstructure and potential manufacturing-related attributes.
Deformulation is an important analytical component of many reverse-engineering projects, but the two are not the same. Deformulation focuses primarily on identifying and quantifying formulation components. Reverse engineering uses this information together with physical, analytical and performance data to understand why the product behaves as it does and how that performance may be reproduced, optimized or differentiated.
Pharmaceutical reverse engineering can support development teams that need to:
- Understand how a reference or innovator formulation achieves its performance.
- Identify formulation parameters that may affect dissolution, release, stability or manufacturability.
- Support generic formulation development beyond composition alone.
- Investigate performance differences between test and reference products.
- Evaluate formulation strategies for product improvement or differentiation.
- Support IP and patent evaluation with formulation and analytical evidence.
- Define follow-up development work, such as dissolution testing, excipient characterization or prototype formulation.
What can reverse engineering reveal?
| Development question | Typical reverse engineering output |
|---|---|
| How does the formulation achieve its release profile? | Link between composition, excipients and dissolution/release behaviour |
| Which excipients are functionally important? | Assessment of excipient role, grade, quality or criticality |
| Why does the test product behave differently from the reference? | Comparative formulation and performance assessment |
| Which parameters may be critical to product performance? | Hypotheses on formulation, process or microstructure drivers |
| Can the product be reproduced or improved? | Development strategy for prototype formulation or optimization |
| What additional testing is needed? | Recommendations for dissolution, analytical, physical or formulation follow-up |
| What can we learn about how the product was manufactured? | Assessment of formulation and physical characteristics that may provide insight into likely process-related attributes |
Pharmaceutical Formulation Characterization in Reverse Engineering
Pharmaceutical reverse engineering combines compositional, physical and performance characterization to build an evidence-based understanding of how a drug product works. The objective is not simply to generate analytical data, but to identify the formulation and product attributes most likely to control performance.
The characterization strategy is therefore designed around the development question and dosage form rather than applying the same analytical package to every product.
Depending on the product and development question, reverse engineering may include:
- Review of reference product composition and available public information.
- Deformulation data and excipient characterization.
- Dissolution, release, solubility or disintegration testing.
- Physical characterization of dosage form attributes.
- Assessment of likely excipient functionality and process-related parameters.
- Recommendations for prototype development, optimization or further testing.
What Is the Difference Between Pharmaceutical Reverse Engineering and Deformulation?
Pharmaceutical deformulation determines what a drug product contains. Pharmaceutical reverse engineering investigates how and why the product works.
Deformulation focuses primarily on the qualitative and quantitative composition of the formulation: which excipients are present, how much is present and, where analytically feasible, which excipient grade or quality may have been used.
Reverse engineering is broader. It combines composition data with formulation science, physical characterization, analytical testing and product performance data to investigate how formulation design, excipient functionality, microstructure and potential process-related attributes contribute to product behaviour.
Deformulation can therefore form an important part of a pharmaceutical reverse-engineering project, but reverse engineering may continue beyond Q1/Q2 composition to investigate the factors controlling dissolution, release, stability, manufacturability or other relevant product characteristics.
For projects focused specifically on excipient identification, quantification or Q1/Q2 assessment, see our pharmaceutical deformulation services.
Connecting composition to product performance
Reverse engineering is most valuable when composition data is interpreted together with product performance. For many drug products, excipient identity and quantity alone do not fully explain performance. Release behaviour, disintegration, solubility, microstructure, manufacturing process and excipient functionality may all influence how a formulation performs.
The attributes that control product performance depend strongly on the dosage form and API. For an immediate-release tablet, disintegration, API particle characteristics and excipient functionality may be important. For a modified-release formulation, polymer grade, polymer distribution, matrix structure or coating characteristics may become critical. Other products may require investigation of rheology, particle or droplet characteristics, solid-state properties, interfacial behaviour or other formulation-specific attributes.
Reverse engineering should therefore be hypothesis-driven. Analytical and performance data are used to identify potential critical formulation attributes and progressively test which differences are most likely to explain the observed behaviour of the reference product.
Reverse engineering can accelerate generic or differentiated product development when the reference product is well characterized. For solid dosage forms, the focus is often on release properties, but the same approach can also support understanding of product composition, excipient functionality, manufacturing-related attributes and performance differences.
By combining Excipia’s excipient expertise with Avivia’s formulation, analytical and dissolution platforms, we can help identify which formulation factors are most likely to affect product behaviour and which development steps should follow.
Where appropriate, reverse engineering findings can support prototype formulation development, product optimization or preparation for small-scale development work through Avivia.
When Is Pharmaceutical Reverse Engineering Useful?
Pharmaceutical reverse engineering can be valuable when a development team needs to understand a reference or competitor product before developing, reproducing or improving a formulation. It is particularly useful when knowledge of composition alone is insufficient to explain product performance.
Typical applications include generic and hybrid drug product development, investigation of differences between test and reference products, formulation troubleshooting, failed or unexpected dissolution or bioequivalence performance, product optimization, competitor characterization and assessment of formulation-related intellectual property.
Reverse engineering can also help determine which additional experiments are actually needed. Rather than developing a formulation by trial and error, characterization of the reference product can be used to establish hypotheses about the attributes controlling its performance and guide subsequent formulation and analytical development.
Our Approach to Pharmaceutical Reverse Engineering
A reverse-engineering project starts with the development question rather than a predefined analytical package. Available information about the reference product, API, dosage form, regulatory strategy and observed product performance is reviewed to determine which characteristics are most likely to be relevant.
Analytical characterization, deformulation, excipient analysis and performance testing can then be applied selectively to test these hypotheses. Findings from each stage can guide the next experiments, allowing the investigation to progressively focus on the attributes most likely to control product behaviour.
Through the combination of Excipia’s excipient characterization expertise and Avivia’s analytical, formulation and dissolution capabilities, the results can subsequently be translated into practical recommendations for formulation development, optimization or troubleshooting.
FAQ
Welcome to Excipia, a service platform of Avivia, dedicated to the composition, quality and quantity of excipients in medicinal products.
Discover our unique services such as quantitative excipient analysis, identification, selection or specific formulation development support. Don’t forget to check out our case studies.
Feel free to contact us using the “Contact” button or by sending a message to Excipia@avivia.nl.
Menno Wiltink
Founder of Excipia.
