Apr 22, 2026Business

When evaluating a supplement contract manufacturer, quality certifications are often the first documents you request. GMP and ISO standards both matter — but they answer different questions. Understanding the distinction helps you audit partners with confidence.

What GMP means for dietary supplements

Good Manufacturing Practice (GMP) frameworks define how products are consistently produced and controlled to quality standards. For nutraceuticals, GMP typically covers:

• Facility design, hygiene, and personnel training
• Raw material receipt, testing, and supplier qualification
• Master batch records, in-process controls, and release testing
• Deviation handling, CAPA, and change control
• Traceability from raw material lot to finished batch

GMP is not a marketing badge — it is an operational discipline that should be visible in documentation, shop-floor practices, and audit trails.

What ISO certifications cover

ISO standards provide structured management systems. Common certificates in food and supplement manufacturing include:

• ISO 9001 — quality management systems (process consistency, customer focus)
• ISO 22000 / FSSC 22000 — food safety management including HACCP principles
• ISO 14001 — environmental management (relevant for ESG-focused brands)

ISO certification demonstrates that a site operates a documented, externally audited management system. It complements — but does not automatically replace — product-specific GMP requirements.

Ask not only which certificates a factory holds, but how those systems appear in daily production: batch records, cleaning logs, and release procedures.

GMP vs. ISO: a practical comparison

• Primary focus — GMP: product quality and manufacturing controls; ISO: organizational management systems
• Scope — GMP is production-centric; ISO can cover wider company processes
• Buyer relevance — Both support due diligence; GMP is often the deeper ask for formulation and batch release
• Audit approach — Review GMP through batch documentation walk-throughs; validate ISO through certificate scope and surveillance audit dates

What to request during manufacturer evaluation

1. Current GMP and ISO certificates with scope of certification
2. Most recent internal and external audit summaries (where shareable)
3. Examples of batch manufacturing records and COA structure
4. Raw material and finished product testing protocols
5. Deviation and recall procedures

Quality at Mirfarma

Mirfarma operates a 5,000 m² supplement manufacturing facility in Istanbul with pharmaceutical-grade environmental controls, in-house quality processes, and production across liquids, capsules, tablets, and powders. Quality documentation and transparent communication are central to how we partner with export-focused brands.