Permitted Daily Exposure (PDE)

Permitted Daily Exposure, commonly referred to as PDE. Which is a crucial concept in the world of pharmaceuticals and other industries dealing with chemicals. The PDE is the maximum amount of a substance that a person can be in exposure to on a daily basis without experiencing any harmful effects. PDEs are set by regulatory bodies such as the US Food and Drug Administration (FDA) and the European Medicines Agency (EMA) to ensure the safety of consumers.

Establishing PDEs

Regulatory bodies establish PDEs by reviewing available scientific data on a substance, including toxicology studies, pharmacological data, and human exposure data. PDEs are set for each route of exposure, such as oral ingestion, inhalation, or dermal exposure, and for different populations, such as adults, children, and pregnant women. The PDE is calculating by dividing the No Observable Adverse Effect Level (NOAEL) by a safety factor, typically 100 or 1000.

PDEs and Risk Assessment

PDEs play a critical role in the risk assessment of pharmaceuticals and other chemicals. Risk assessment is the process of evaluating the potential risks of exposure to a substance and determining whether those risks are acceptable. PDE are in use to assess the risk of exposure to a substance and to establish safe exposure limits.

Permitted Daily Exposure and Manufacturing

PDEs are also important in the manufacturing of pharmaceuticals and other chemicals. The PDE sets the limit for the amount of a substance that can be present in a drug product or in a manufacturing environment. Manufacturers must adhere to PDEs to ensure that their products are safe for consumers and that their employees are not in exposure to harmful levels of chemicals.

PDEs and Quality Control

Quality control is an essential part of manufacturing pharmaceuticals and other chemicals. PDEs are used as a standard for quality control to ensure that the amount of a substance present in a product or manufacturing environment is within the established safe limits. Quality control measures help to prevent deviations from the PDE and ensure that products are consistently safe for consumers.

PDEs and Labeling

PDEs are to determine the labeling requirements for pharmaceuticals and other chemicals. If a substance has a PDE, it must be listed on the product label. Along with the maximum daily exposure limit. This information helps consumers to make informed decisions about the products they use and to avoid exposure to harmful levels of chemicals.

PDEs and Future Research

PDEs are not stone writings and can have updates as new scientific data becomes available. Regulatory bodies are constantly monitoring scientific research to ensure that PDEs remain up-to-date and reflective of the latest scientific knowledge. As new research is conducted, PDEs may be revised to reflect changes in our understanding of the safety of a substance.

Expertise expected in Permitted Daily Exposure

  • PDE computation in compliance with EMA/ CHMP/ CVMP/ SWP/ 169430/ 2012.
  • PDE reports approved by board- certified( DABT/ ERT) and educated toxicologists.
  • Sound scientific knowledge and experience in identification of critical goods, point of departures( capsules). The no- observed-adverse- effect position( NOAEL) or no observed effect position( NOEL) and smallest- observed-adverse- effect- position( LOAEL) from utmost applicable non-clinical/ clinical studies.
  • Comprehensive P. Daily Exposure report encompassing the following details
  • Hazard alters suggestions summary
  • Review of acute toxin( LD50 computations), skin/ eye vexation and sensitization eventuality
  • reprise Cure toxin
  • Reproduction and Developmental toxin
  • Genotoxicity
  • Carcinogenicity
  • Clinical validation with the sensitive and vulnerable population
  • Use of Threshold of Toxicological Concern( TTC) approach for genotoxic substances( ICH- M3( R2))
  • outgrowth of PDE/ ADE values for uncommon or other routes of exposure.( illustration, nasal, optic, otic, topical/ dermal including intravenous infusions).
  • Establishment of PDE situations for cleansers and impurities
  • GMP examination support( post/ during) including answering the Agency queries
  • Any other technical and protocol support during cleaning evidence

Advantages required for Permitted Daily Exposure

  • Good platoon of toxicologists and non-clinical experts involved in the drafting of the reports.
    Reports reviewed and approved by American board certified( DABT) and European Registered Toxicologists( ERT) with expansive experience in nonsupervisory toxicology.
  • Global delivery of 1500 EMA biddable PDE/ ADE reports, 1000 OEL reports and 850 combined PDE/ OEL reports.
  • Established and structured literature hunt strategy
  • Robust quality control checks right from document compendium to subscribe- off stages
  • Quick reversal time for PDE and OEL reports as per customer’s timelines
  • Inflexibility to acclimatize to customer-specific templates and conditions including precedence deliveries of the reports within the shortest time.
  • Quick Reversal time for PDE and OEL reports as per customer’s timelines
  • Inflexibility to acclimatize to customerspecific templates and conditions including precedence deliveries of the reports within the shortest time.


In conclusion, PDEs are an essential concept in the world of pharmaceuticals and other industries dealing with chemicals. They play a critical role in the risk assessment of substances, the manufacturing of products, quality control, labeling, and future research. By establishing safe exposure limits. PDEs help to ensure the safety of consumers and employees and to prevent harmful exposure to chemicals.