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Related Experiment Videos

Optimizing delivery of therapeutics: percutaneous technologies.

M R Henzl1

  • 1The Department of Gynecology and Obstetrics, Stanford University School of Medicine, California, USA. mhenzl@aol.com

Bratislavske Lekarske Listy
|November 5, 2002
PubMed
Summary

Percutaneous drug delivery offers advantages over conventional dosing, especially for reproductive steroids and pain management. Novel technologies promise needle-free, on-demand delivery of various therapeutics.

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Area of Science:

  • Pharmacology
  • Drug Delivery Systems
  • Biotechnology

Background:

  • Transdermal drug delivery bypasses first-pass liver metabolism, offering advantages like rapid action and self-administration.
  • Passive transdermal systems are used for hormonal replacement therapy and contraception.
  • Active transdermal systems utilize technologies like electrotransport and ultrasound for enhanced delivery.

Purpose of the Study:

  • To demonstrate the potential of percutaneous drug delivery using female reproductive steroids.
  • To differentiate transdermal from conventional drug dosing methods.
  • To outline emerging technologies in transdermal drug delivery, particularly for pain management.

Main Methods:

  • Review of passive transdermal systems (patches) for hormonal replacement therapy (HRT) and contraception.

Related Experiment Videos

  • Description of active transdermal systems employing electrotransport and microprojection technology.
  • Discussion of ultrasound-assisted transdermal delivery.

    • Main Results:

    • Transdermal estradiol (E2) patches for HRT require concurrent progestogen dosing.
    • Contraceptive patches with ethinylestradiol and norelgestromin offer high efficacy and predictable bleeding.
    • Active systems enable precise dosing, delivery of large molecules, and on-demand analgesia.

    Conclusions:

    • Percutaneous drug delivery, especially transdermal, presents significant advantages over conventional methods.
    • Innovations in active transdermal systems are revolutionizing pain management and drug delivery.
    • Variable absorption and skin irritation remain challenges for some transdermal systems.