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Topical corticosteroid vehicle composition and implications for clinical practice.

R Oakley1, B W M Arents2, S Lawton3

  • 1St George's University Hospitals NHS Foundation Trust, London, UK.

Clinical and Experimental Dermatology
|October 27, 2020
PubMed
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Topical corticosteroid (TCS) vehicles significantly impact drug bioavailability and therapeutic outcomes. Understanding vehicle composition is crucial for optimizing TCS treatment efficacy and safety in clinical practice.

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Area of Science:

  • Dermatology
  • Pharmaceutics
  • Drug Delivery Systems

Background:

  • Topical corticosteroids (TCS) are widely used for inflammatory skin conditions.
  • The vehicle, or base, of topical formulations is often considered inert but significantly influences drug performance.
  • Lack of understanding regarding vehicle-skin-drug interactions leads to inconsistent TCS potency classification and clinical outcomes.

Purpose of the Study:

  • To review the therapeutic significance of topical corticosteroid vehicles.
  • To provide guidance for improving clinical and research outcomes related to TCS.
  • To enhance understanding of the relationship between topical vehicles, corticosteroids, and skin.

Main Methods:

  • Narrative review of existing literature on topical corticosteroid vehicles.
  • Analysis of formulation components and their impact on bioavailability and skin.
  • Examination of research methods for standardizing TCS product bioavailability assessment.

Main Results:

  • Topical vehicles are not inert and actively influence TCS bioavailability and efficacy.
  • Vehicle composition affects skin status and the physicochemical properties of corticosteroids.
  • This influence contributes to inconsistencies in current TCS potency classification systems.

Conclusions:

  • A deeper understanding of vehicle composition is essential for safer and more effective TCS therapy.
  • Standardized research methods are needed to accurately determine TCS product bioavailability.
  • Prescribing TCS by brand and avoiding manipulation of formulations is recommended for optimal outcomes.