GDP stands for Good Distribution Practice. It sets out the controls used to maintain the quality and integrity of medicines through the distribution chain, including sourcing, storage, supply and transport.
Why does GDP matter?
Medicine quality needs to be maintained after manufacture. Distribution controls help protect medicines from unsuitable conditions, damage, mix-ups and entry into the legitimate supply chain from inappropriate sources.
A medicine may travel through several organisations before reaching the patient. Clear responsibilities, traceable records and suitable storage and transport arrangements support control across those handovers.
What does GDP cover?
The controls required depend on the activity and the medicines involved. Common areas of GDP include:
- A quality system with defined responsibilities and trained personnel.
- Qualification of suppliers and customers appropriate to the licensed activity.
- Suitable premises, equipment and storage conditions.
- Transport arrangements that maintain the required conditions.
- Documentation and traceability of receipt, storage and supply.
- Controlled handling of complaints, returns, recalls and suspected falsified medicines.
- Oversight of outsourced activities and self-inspection.
What is the difference between GDP and GMP?
GMP focuses on manufacturing and controlling medicines to the required quality. GDP focuses on maintaining that quality during distribution. The disciplines have different activities and responsibilities but share a need for effective quality systems and reliable evidence.
For example, the manufacturing operation establishes and controls the product’s quality. The distribution operation must then maintain the appropriate storage and transport conditions and preserve traceability.
Who needs to understand GDP?
GDP understanding is useful for people involved in wholesale distribution, warehousing, transport, quality and supply-chain oversight. The UK licensing framework also defines responsibilities for roles such as the Responsible Person; an introductory course does not establish eligibility for appointment.
Check the requirements applicable to your organisation’s licence, activities and supply routes. The MHRA’s guidance is the appropriate starting point for UK requirements.
Start your free GDP learning
Watch our Good Distribution Practice introduction, then listen to Kyle and Adam’s GxP Conversations discussion on MHRA Guidance Note 6. Continue with the official guidance and the procedures used in your workplace.
Go to the source
Use the current version of official guidance for your activity and location.
Help Me GxP learning guide · Updated 27 September 2026.
