CMC & ManufacturingLast reviewed April 2026

Corrective and Preventive Action(CAPA)

A systematic approach to identifying, investigating, and addressing the root causes of quality problems.

Usage Examples

A CAPA was initiated following the batch failure investigation.
The root cause analysis identified training gaps.
CAPA effectiveness was verified through trending data.

What is CAPA?

Corrective and Preventive Action (CAPA) is a quality system process required by GMP regulations for investigating, understanding, and correcting discrepancies while preventing recurrence. CAPA is fundamental to pharmaceutical quality systems and is a frequent focus of regulatory inspections.

Corrective actions address existing nonconformities by investigating root causes and implementing solutions. Preventive actions proactively identify potential problems and implement measures to prevent them. Both require documentation, effectiveness verification, and management review.

An effective CAPA system is risk-based, timely, and ensures problems don't recur. Weak CAPA systems are among the most common inspection findings, often leading to Warning Letters.

Regulatory Context

This term appears most often in cmc & manufacturing workflows where submission quality, regulatory evidence, and audit readiness depend on consistent language. It is commonly referenced alongside 21 CFR 211 192, 21 CFR 820 100, ICH Q10.

FDAICHHealth Canada

When This Matters

A CAPA was initiated following the batch failure investigation.
The root cause analysis identified training gaps.
CAPA effectiveness was verified through trending data.

Common Mistakes

Failing to align CMC change narratives with current CFR/ICH expectations.
Submitting incomplete control strategy documentation.
Separating manufacturing and regulatory review cycles too late in execution.

Related Regulations

21 CFR 211 19221 CFR 820 100ICH Q10

How to Execute a CAPA (Corrective and Preventive Action)

Investigate a quality event, identify root cause, implement corrective and preventive actions, and verify effectiveness.

1
Document the event and open the CAPA
Log the triggering event (deviation, OOS, complaint, audit finding) in the quality system with initial classification, severity, and scope. Assign an owner, target dates, and a stakeholder team.
2
Conduct root cause analysis
Use structured techniques (5-Why, Fishbone, FMEA, fault tree) to identify the underlying cause(s) — not just the proximate symptom. Document evidence supporting each candidate cause. Distinguish failure modes from root causes.
3
Assess impact and scope
Determine if other batches, products, sites, or systems share the same root cause. Scope the CAPA to cover all affected areas, not just the originating event. Notify stakeholders (customers, regulators) if required.
4
Define corrective actions
Actions to correct the specific event: investigate root cause, restore affected product or process, notify stakeholders. Include clear acceptance criteria and completion evidence.
5
Define preventive actions
Actions to prevent recurrence and address systemic weaknesses: procedure updates, training, equipment changes, specification tightening, monitoring additions. Preventive actions often have longer timelines than corrective.
6
Implement and document
Execute all corrective and preventive actions with documented evidence. Update affected SOPs, specifications, records. Ensure training on changes. Update the risk management file if risk posture changed.
7
Verify effectiveness
After implementation, monitor for recurrence or new related events over a defined observation period (typically 3-12 months). Use statistical trending where possible. Formally close the CAPA only after effectiveness is confirmed.

Frequently Asked Questions

CAPAs are triggered by deviations, out-of-specification results, complaints, audit findings, recalls, trend analysis, process capability issues, or any situation requiring systematic investigation and correction.

Corrective action addresses problems that have occurred to prevent recurrence. Preventive action proactively identifies and addresses potential problems before they occur.

Effectiveness is verified by monitoring that the problem doesn't recur, reviewing trending data, conducting follow-up audits, and assessing whether root causes were truly addressed.