Good Manufacturing Practices: What You Need to Know

Strengthen GMP in your organization by understanding the 12 basic guidelines and maximizing today’s technologies.

What is Good Manufacturing Practice (GMP)?

A Good Manufacturing Practice (GMP) system ensures that manufacturing products, such as food, cosmetics, and pharmaceutical goods, are consistently produced and controlled according to set quality standards. Every aspect of the manufacturing process is examined and covered by GMP to guard against any risks that can be catastrophic for products, such as cross-contamination, adulteration, and mislabeling. Implementing GMP can help cut down on losses and waste, and protects both the company and consumer from negative food safety events.

GMP Regulation

Quality of manufactured products is highly regulated as it can pose negative health risks to consumers and even the environment. Poor hygiene, temperature-control, cross-contamination, and adulteration in any step of the manufacturing process are some examples of how a manufactured product that doesn’t follow GMP guidelines can bring fatal consequences to consumers.

GMP is implemented by many manufacturers around the world and is mandated by their respective national government to regulate production, verification, and validation of manufactured products and ensure that they are effective and safe for market distribution. For example, in the United States, GMP is enforced by the US FDA through Current Good Manufacturing Practices (CGMP) which cover a broader range of industries such as cosmetics, food, medical devices, and prescription drugs. The FDA conducts facility inspections to assess if a manufacturing company complies with CGMP regulations. If any serious violations are found during the inspection, FDA recalls all products, which is problematic for manufacturers in terms of both profit and business operations. See GMP regulation and preamble sources by country here.

 

The 12 Basic GMP Guidelines

GMP guidelines are a set of principles that help manufacturers implement an effective manufacturing process and ensure that quality is built into the organization and the processes involved. GMP guidelines are customarily flexible, with countries having their own legislation to comply with local GMP guidelines and principles. But almost all regulations are derived from the basic concept and guidelines which are:

Quality management

The principle of quality management is to ensure that manufactured products are fit for its intended use, complies with requirements, and does not place consumers at risk due to inadequate safety, quality, or efficacy measures. To achieve this quality objective, quality assurance, good manufacturing practices, quality control, and quality risk management should be comprehensively and correctly implemented.

  • Quality assurance – The system of quality assurance aims to ensure that manufactured products are designed and developed in a way that meets the requirements for Good Manufacturing Practice.
  • Good Manufacturing Practice for Products – As a part of quality assurance, good manufacturing practice is concerned with production and quality control. It aims to mitigate the risks that are inherent in the production process. Its basic requirements according to WHO’s Good Manufacturing Practices for Pharmaceuticals state the following:
      • All manufacturing processes are clearly defined, systematically reviewed in the light of experience and shown to be capable of consistently manufacturing medicinal products of the required quality and complying with their specifications and/or marketing authorization;
      • Critical steps of manufacturing processes and significant changes to the process are validated;
      • All necessary facilities for GMP are provided including: i. appropriately qualified and trained personnel; ii. adequate premises and space; iii. suitable equipment and services; iv. correct materials, containers, and labels; v. approved procedures and instructions;
      • Instructions and procedures are written in an instructional form in clear and unambiguous language, specifically applicable to the facilities provided;
      • Operators are trained to carry out procedures correctly;
      • Records are made, manually and/or by recording instruments, during manufacture which demonstrate that all the steps required by the defined procedures and instructions were in fact taken and that the quantity and quality of the product were as expected. Any significant deviations are fully recorded and investigated;
      • Records of manufacture including distribution which enable the complete history of a batch to be traced are retained in a comprehensible and accessible form;
      • The distribution (wholesaling) of the products minimizes any risk to their quality;
      • A system is available to recall any batch of product, from sale or supply;
      • Complaints about marketed products are examined, the causes of quality defects investigated and appropriate measures are taken in respect of the defective products and to prevent re-occurrence
  • Quality control – Quality control is a part of Good Manufacturing Practice that focuses on sampling, specification, and testing. It checks the organization, documentation, and release procedures to ensure that products go through the required tests before being released for sale or supply. 
  • Quality risk management – Quality risk management is a systematic process of assessing risks that can affect the quality of the product. According to its principles, quality risk management should ensure that:
      • The evaluation of the risk to quality is based on scientific knowledge, experience with the process and ultimately links to the protection of the patient and users;
      • The level of effort, formality, and documentation of the quality risk management process is commensurate with the level of risk. c) The general quality risk management process and integration into the product quality can be referred to in ICHQ9.

Sanitation and hygiene

Sanitation and hygiene is vital in every aspect of the manufacturing process. It covers anything that can cause contamination such as personnel, the premises, equipment, containers, and production materials. All potential sources of contamination should be identified and eliminated with a comprehensive sanitation and hygiene program.

Building and facilities/premises

As a principle, the premises should be situated in an environment that is suitable for its operations and one that is free from risks of contamination of materials and products. The premises should also be designed to minimize errors in operations and should be easy to clean and maintain.

Equipment

Same with the premises, equipment should be designed, located, and maintained to function according to its intended use. Additionally, it should be cleaned and stored according to procedures. In the event of defect or malfunction, it should be removed or labeled as defective.

Raw materials

All materials used for production should be stored properly according to its appropriate conditions which are set by the manufacturers. There should be a proper stock management system implemented to ensure that all incoming materials are correct and of high quality.

Personnel

The success of GMP compliance heavily relies on the people implementing it. For this reason, it is vital that all personnel are qualified and trained to do the job. They should be aware of the principles of GMP and receive continued training, hygiene instructions, and other tools relevant to their needs. Respective managers should be clear on job descriptions for each worker to avoid misunderstandings and reduce the risk of issues like overlapping responsibilities.

Validation and qualification

Qualify systems, premises, and equipment if they are fit/ready for its intended use and validate if processes and procedures can repeatedly produce high-quality products. Critical steps in the manufacturing process should be verified to ensure that product quality is consistent and maintained at a high level. According to the WHO (World Health Organization), qualification and validation should establish and provide documentation stating that:

      • the premises, supporting utilities, equipment, and processes have been designed in accordance with the requirements for GMP (design qualification or DQ)
      • the premises, supporting utilities and equipment have been built and installed in compliance with their design specifications (installation qualification or IQ);
      • the premises, supporting utilities and equipment operate in accordance with their design specifications (operational qualification or OQ); and a specific process will consistently produce a product meeting its predetermined specifications and quality attributes (process validation or PV, also called performance qualification or PQ)

Complaints

Handling complaints is also part of GMP, therefore all manufacturing companies should have a well designed GMP complaint system. Ideal complaint handling should have a ready solution to provide for all contingencies. 

Documentation and recordkeeping

Good documentation and recordkeeping is an essential part of the quality assurance system and is required in compliance with GMP requirements. Accurate recordkeeping can help managers and supervisors keep track of the historical record of manufacturing procedures and corrective measures implemented. Below are general requirements for documentation:

      • Documents must be designed, prepared, reviewed, and distributed with care.

      • Documents should be clear and legible.

      • Documents must be approved, signed, and dated by appropriate and authorized personnel.

      • Documents must have unambiguous contents such as title, nature, and purpose.

      • Documents must be regularly reviewed and updated.

      • Documents must not be handwritten.

      • Any corrections made to a document or record must be signed or initialed and dated. Reason for the correction should also be recorded (where appropriate).

      • Record each action taken for traceable activities such as manufacturing and control of products.

Inspections & quality audits

Inspections should be regularly performed to monitor if GMP is implemented and complied with. Document what areas need more work and provide corrective measures for continuous improvement. Quality audits are done to assess the quality systems implemented by the manufacturing company. GMP audit checklists can help companies comply with GMP guidelines set by regulatory authorities. By performing site visual walkthroughs and conducting manufacturing evaluations, you can identify non-compliant processes and take immediate action to address areas for improvement.

 

How to Sustain GMP Compliance

GMP compliance regulations are developed to enhance the safety of manufactured products, especially pharmaceutical goods, and to ensure consumers get the highest quality possible. GMP compliance not only positively impacts the reputation of manufacturing companies but also reduces batch recalls and negative reports from consumers. Below are 5 measures you can follow to sustain GMP compliance:

  1. Quality team
    Have a team of skilled workers that will focus on improving current manufacturing procedures and complying with GMP. Members will perform quality assessments on operations to identify problems and develop appropriate corrective measures. Part of the team’s responsibility will also be performing scheduled monitoring of instruments, equipment, processes, and staff skills.
  2. Validation
    Validation is the documented act of demonstrating instruments, processes, and activities that are regularly used or done. This is done to check if they function according to expectations. GMP can involve a number of things to be validated, but it’s good to focus on the following processes:

      • Process validation
      • Cleaning and sanitation validation
      • Computer system validation
      • Analytical method validation
  3. Surprise Audits
    A surprise audit every now and then can help gain more accurate insight on what goes on in the facility. Identify real root causes of non-compliance and take action before it progresses into a larger issue. Read more about best practices in doing GMP audits.
  4. Compliance Training
    Providing compliance training to staff is the best way to ensure GMP compliance. Help staff gain a better understanding of GMP and continually improve operations or systems in place to ensure standards are GMP-compliant. All employees should receive training on recordkeeping, sanitation, proper equipment handling and labeling, and SOPs to minimize errors and maintain compliance.

Strengthen GMP in your Organization

Having robust processes and easy-to-use systems that enforce and monitor standards can strengthen GMP compliance in your organization. With technological advances in the industry, food manufacturers have more opportunity to transform a reactive company culture, into a proactive, predictive workforce equipped for continuous improvement. Utilize digital tools such as iAuditor, a mobile inspection app, and sensors to move your GMP beyond compliance. Learn more about iAuditor.


See how a trusted food delivery business in Australia, Marley Spoon, immediately takes action based on real-time data using iAuditor temperature sensors:

iAuditor gives you the flexibility to power any inspection you require—onsite, underground, and across the globe. Inspect construction sites, restaurant food safety inspections, conduct temperature checks, pre-flight checks, toolbox talks, and more. It is the mobile forms inspection solution for all industries.

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