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Photostability ICH Q1B: Practical Interpretation and Execution

This course strengthens the ability to interpret and execute ICH Q1B photostability requirements, enabling consistent study design, exposure assessment, analytical evaluation, and scientifically supported photostability decisions during pharmaceutical development. This Course is designed for professionals responsible for pharmaceutical stability evaluation, analytical testing, regulatory interpretation, and development execution.

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US $190 per learner

30-Days Unlimited Streaming Access

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To Get 30-Day Access to ONLY this Course 

US $190 per learner
  • This course is Included in Subscription Pack
Subscription include access to entire Learning Library
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  • Instructor : Scott R. Thatcher ‎
  • Study time : 60 Minutes
  • Skill Level: Intermediate
  • Course ID: TF2176
  • Assessment & Certification Included
  • Ask the Expert

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About the Course

Photostability assessment remains a critical component of pharmaceutical development because light exposure can alter drug quality, analytical behavior, and product suitability. Correct interpretation of ICH Q1B requirements is necessary for generating acceptable stability data and supporting regulatory submissions in global development programs. Practical understanding of exposure requirements, terminology, and study execution helps reduce inconsistency in testing approaches and improves confidence in photostability decisions.


Discussion of light sources, sample presentation, analytical testing, and interpretation of study results provides operational direction for conducting photostability studies under the guideline. The course also addresses protocol structure, practical evaluation of photostability outcomes, and approaches used to protect photoliable drugs during development. Attention to these areas is important for organizations managing analytical method development, stress studies, and regulatory documentation where insufficient photostability assessment may affect development timelines or regulatory review. Consistency in execution also supports clearer internal decisions during product development activities.

  • Apply ICH Q1B Requirements with Greater Consistency:

    Interpretation of ICH Q1B terminology, exposure requirements, and study expectations supports more consistent execution of photostability assessments across development programs. Greater familiarity with light sources, sample presentation, and analytical testing reduces uncertainty during study planning and helps teams prepare data suitable for regulatory submission and internal development decisions.

  • Strengthen Practical Photostability Decision-Making:

    Clear evaluation of study results is important when determining whether a drug product requires protective measures against light exposure. Guidance on protocol structure, execution of sample analysis, and interpretation of photostability outcomes helps reduce avoidable testing gaps and supports development activities where incomplete assessment may delay regulatory review or product progression.

Key Areas Covered

  • Chemistry of light and its relevance to pharmaceutical applications
  • Interpretation of ICH Q1B photostability guideline requirements and terminology
  • Minimum exposure requirements and practical considerations for study execution
  • Selection and use of light sources for photostability testing
  • Sample presentation, analytical testing approaches, and evaluation of study results
  • Development of photostability testing protocols and supporting technical references
  • Practical approaches for photostability decision-making during pharmaceutical development
  • Methods used to protect photoliable drugs from light exposure

Who Must Attend

  • QA/QC Departments
  • Analytical Development Departments
  • Drug Development Oversight Teams
  • Regulatory Affairs Departments
  • Pharmaceutical Development Teams
  • Formulation Development Teams

Quality training, expert insights, and answers that matter. Know your Expert

SCOTT R. THATCHER

Scott Thatcher is a 20+ year veteran of the pharma and biopharma industry with published work in analytical chemistry and photostability studies. His experience includes CMC development and launch activities across multiple drug delivery systems, execution of stress studies supporting analytical method development and validation, and interpretation of the ICH Q1B guideline for regulatory submissions. He has contributed to submissions that met regulatory requirements and received agency approval.

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Our students love us ❤️

“Useful refresher for the team. The discussion around study interpretation gave us a better way to look at our current approach.”

Scientist, Analytical Development Department

“Some of the discussion around photostability decisions matched issues we’ve seen internally. Helpful session overall.”

Supervisor, Drug Development Oversight Team

“Liked that the session stayed focused on actual execution instead of only theory.”


Senior Associate, QA Department

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