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An Overview of Drug Master Files


What is a Pharmaceutical Drug Master File?

drug master file is a document that’s curated and prepared by the pharmaceutical manufacturer. This confidential file is then submitted to the regulatory agency.

What is an API (Active Pharmaceutical Ingredient) Drug Master File?

The pharmaceutical drug manufacturers usually prepare a single drug masterfile, where information about the API used in pharma drug is usually included. Though sometimes, they have to create a separate API DMF, which is exclusively about the USP and composition of the API used by the pharmaceutical drug manufacturers.   

What does a Drug Master File contain?

A drug master file is usually prepared after the completion of the manufacturing process of a pharmaceutical drug. It includes factual and confidential details of the facilities of the manufacturing plant, info on the manufacturing process, active pharmaceutical ingredients and other inactive ingredients used in preparing the pharmaceutical drug. The purity and impurity of a pharmaceutical drug and what kind of internal and external environment it was exposed to are also included in a pharmaceutical drug master drug file.

Importance of submitting a Pharmaceutical Drug Master File

The main reason the regulatory agency (FDA) asks the pharmaceutical manufacturers to submit a Pharmaceutical DMF is to create a culture of transparency within the health industry; the health of humans is at stake, too.

Prerequisites of Submitting Drug Master File to Regulatory Agency
  • Accurate specification of API, excipients and other chemical substances
  • Step-by-step explanation of the drug’s manufacturing process
  • Precisely described flavour, colour, taste and side-effects
  • Clear outlining of research sampling points and procedures
  • Proper profile of purity and the safety of the pharmaceutical drug
  • Description of the internal & external setting of the manufacturing unit
  • Steps taken to protect the drug from the harsh weather conditions
  • What & whys of the materials used in the packaging of the drug
  • A detailed and transparent description of the final product

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