Control Strategy
What a definition is not
A definition is SPEQ’s plain-language decode of how a term is used in practice, cited to the documents that define it. It is a practitioner reference, not legal or regulatory advice, it does not replace the definition in the source, and where a regulator’s wording differs the regulator’s wording governs.
The planned set of controls — derived from current product and process understanding — that assures process performance and product quality, comprising controls on material attributes, facility and equipment conditions, in-process controls, finished-product specifications, and their associated monitoring and control methods, spanning the full manufacturing lifecycle.
A control strategy is what ties the individual pieces of Quality by Design together into one coherent scheme: it takes the critical quality attributes and critical process parameters identified during development and states, concretely, how each is going to be controlled in routine manufacture — through raw material specifications, in-process monitoring, equipment operating ranges, and finished-product release testing.
It is documented in the regulatory filing and is directly linked to the established conditions that define what would count as a post-approval change. As process understanding deepens over the product’s commercial life — through ongoing process verification data — the control strategy itself can evolve, typically shifting some reliance from end-product testing toward in-process and real-time controls.
- —Integrates CQA and CPP controls, in-process testing, and specifications into one documented scheme
- —An ICH Q10 / Q8(R2) concept spanning the full product lifecycle, not just at launch
- —Directly linked to the established conditions filed in the regulatory dossier
- —Evolves over time as process knowledge and ongoing verification data accumulate
ICH Q10 Pharmaceutical Quality System; ICH Q8(R2); ICH Q11
Frequently asked questions
What is Control Strategy?
The planned set of controls — derived from current product and process understanding — that assures process performance and product quality, comprising controls on material attributes, facility and equipment conditions, in-process controls, finished-product specifications, and their associated monitoring and control methods, spanning the full manufacturing lifecycle.
Which regulations cover Control Strategy?
ICH Q10 Pharmaceutical Quality System; ICH Q8(R2); ICH Q11