Global GMP Expertise. Localized Insight. Compliant Results.

Trusted consultancy rooted in EMA, U.S. FDA, and Health Canada GMP regulations — harmonized with ICH, PIC/S, PDA, and ISPE standards.

Regulatory Excellence Across Three Jurisdictions

Comprehensive GMP support aligned with the world’s leading regulatory frameworks.

EU GMP EudraLex Volume 4 displayed in a sterile manufacturing setup for vials.

Navigating EU GMP and Annexes with confidence.

Leverage deep expertise in EudraLex Volume 4, Annex 1, and EU-specific quality and compliance expectations. Ideal for EU-headquartered companies and international firms seeking EU market authorization.

U.S. FDA 21 CFR compliance and sterile manufacturing displayed on a vial for pharmaceutical and biotech manufacturing.

Meeting U.S. FDA 21 CFR compliance, PAI readiness and beyond.

Support tailored to U.S. FDA expectations for both drug and biotech manufacturing, including guidance on inspections, warning letters, and quality system readiness.

Health Canada regulation on manufacturing of drugs for human use displayed on a sterile manufacturing vial for the pharmaceutical and biotech industry.

GMP compliance with Canadian regulatory precision.

Expertise in Canadian GMPs and alignment with the Food and Drugs Act & Regulations. Especially relevant for companies operating in or exporting to Canada, including biotech and small-molecule manufacturers.

Areas served

  • Blue and white capsules on a conveyor belt in a pharmaceutical or pharmaceutical manufacturing setting.

    Pharmaceutical Manufacturing

    Support for small- and large-molecule drug production, from batch record reviews, inspection readiness, to regulatory submissions and GMP compliance.

  • A pharmaceutical vial filling machine filling small glass bottles with liquid in a factory setting.

    Biotechnology

    Biotech-specific QA strategies, tech transfer support, and compliance with evolving standards for ATMPs and biologics.

  • A scientist wearing a face mask, glasses, and blue gloves holds a small vial of vaccine or medication in a laboratory setting.

    Clinical Trial Manufacturing (GMP for IMPs)

    Specialized experience with GMP for investigational medicinal products (IMPs), Phase I–III production, and EU Annex 13.

  • Overlay of a handshake and an industrial factory with chimneys emitting smoke at sunset.

    Contract Development & Manufacturing Organizations (CDMOs)

    End-to-end quality and compliance support for CDMOs operating under multiple regulatory frameworks.

Key Services Offered

  • Objective: Resolve compliance gaps and recover from regulatory observations or warning letters.

    We specialize in helping companies respond effectively to:

    • FDA Form 483 observations

    • EMA or Health Canada deficiency letters

    • Third-party audit findings

    Our remediation services include:

    • Root cause analysis (RCA) aligned with industry best practices

    • CAPA planning, execution, and effectiveness checks

    • Documentation clean-up and reconstruction

    • QMS rebuilding or redesign

    • Remediation project management and interim QA leadership

    • Communication strategies for regulators (response letters, updates, milestones)

    Whether you’re recovering from an inspection or preparing a proactive remediation plan, we help you regain regulatory confidence — quickly and sustainably.

  • Objective: Identify and address compliance gaps before regulators do.

    We perform comprehensive internal GMP audits modeled after regulatory inspections (FDA, EMA, Health Canada) and aligned with PIC/S standards. Our audits evaluate:

    • QMS structure and implementation

    • SOPs and records

    • Facility and equipment controls

    • Personnel training and hygiene

    • Batch documentation

    • Data integrity risks

    A detailed gap report outlines deficiencies, risk levels, and prioritized corrective actions.

  • Objective: Prepare confidently for real inspections.

    We simulate regulatory inspections under FDA (PAI, GMP surveillance), EMA (GMP compliance), or Health Canada frameworks. Services include:

    • Inspection coaching and mock interviews

    • Readiness assessments for documentation, site conditions, and personnel

    • Custom inspection playbooks

    • Risk mitigation plans for known findings

    This is ideal before a market authorization application or facility expansion.

  • Objective: Build or improve systems that support compliant operations.

    We help develop or remediate GMP-compliant SOPs and QMS elements including:

    • SOP architecture & formatting

    • Document control systems

    • Change control procedures

    • Deviations, CAPAs, and investigations

    • Quality risk management (ICH Q9)

    • Training systems

    Support includes drafting, revising, and implementing SOPs tailored to your operations — whether for clinical or commercial manufacturing.

  • Objective: Build a robust, inspection-ready QMS — from the ground up.

    We help implement and validate Quality Management Systems tailored to your product lifecycle stage (clinical, commercial, or tech transfer). Services include:

    • End-to-end QMS design aligned with ICH Q10, EMA, FDA, and Health Canada GMPs

    • Selection and configuration of eQMS platforms (MasterControl, Veeva, etc.)

    • SOP creation and hierarchy mapping

    • Process validation documentation and strategy

    • System validation (CSV/CSA) aligned with GAMP 5 and data integrity principles

    • Training program setup and effectiveness checks

    Whether you're a start-up launching GMP operations or an established company overhauling outdated systems, we ensure your QMS is practical, scalable, and compliant.

  • Objective: Ensure trustworthy records and regulatory defensibility.

    We assess data governance practices using ALCOA+ principles and help implement:

    • Audit trails and system validations

    • Secure access control

    • Paper and electronic record compliance

    • Logbook reviews and corrections

    • Procedures for raw data handling and storage

    This service is critical in preparation for FDA or EMA inspections focused on data integrity.

  • Objective: De-risk your supply chain by ensuring vendor compliance.

    We support full lifecycle vendor management including:

    • Third-party GMP audits

    • Technical agreements and quality clauses

    • Vendor qualification packages

    • Ongoing oversight and scorecards

    • Remote audit strategies (post-COVID hybrid models)

    We help you manage CMOs, CDMOs, API suppliers, labs, and packaging vendors to ensure they meet regulatory expectations.

Why work with Retzlaff Consulting?

Global Standards. Practical Solutions. Trusted Expertise.

At Retzlaff Consulting Inc., we combine deep regulatory knowledge with real-world industry insight to deliver GMP compliance that works — not just on paper, but on your shop floor, in your documentation, and at your next inspection.

Our hands-on experience spans EMA, FDA, and Health Canada frameworks, harmonized with ICH, PIC/S, and global industry standards. Having worked with EU-based global pharma, Indian manufacturers, and Canadian biotech firms, we tailor compliant solutions that align with your operations, scale, and lifecycle stage.

Value. Speed. Reliable.

Martin Lehmann, CPO of Qualifyze

“Marco’s contribution to our understanding of the market and our positioning was invaluable. He brought new perspective and practical insights which helped our business objectives.We appreciate his great energy and positive attitude during our collaboration on several thought provoking projects.”

Paul McNulty, Former U.S. Deputy Attorney General

“If you think compliance is expensive, try non-compliance.”

About Retzlaff Consulting Inc.

Where global GMP expertise meets purpose-driven quality leadership.

Founded by Dr. Marco Retzlaff, Retzlaff Consulting Inc. brings over 15 years of international experience in pharmaceutical and biotech quality assurance. Marco has led GMP and quality initiatives across Europe and North America — from global generics and biosimilars to cutting-edge biologics and clinical-stage startups.

His leadership has included:

  • Serving as Head of QA Operations for Novartis/Sandoz Germany, overseeing 1,500+ products

  • Leading an EU QP Release Hub and acting as Wholesaler Responsible Person and Narcotics Officer

  • Building the GMP framework for a new biotech facility in Canada, including validated QMS infrastructure

  • Mastering regulatory inspections by FDA, EMA, Health Canada, Swissmedic, AGES, ANVISA, The Russian Health Authorities, and others

  • Driving remediation and inspection readiness for global sites, often under tight timelines and complex conditions

With a PhD in Biotechnology, certified Lean Six Sigma Green Belt, and experience as a trained European patent attorney, Marco brings a rare blend of scientific depth, regulatory insight, and strategic business alignment.

At the heart of his approach is a commitment to cultivating quality culture — empowering teams, not just systems, to succeed.

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