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Related Experiment Videos

[Placebo effect in clinical trials].

T R Weihrauch1

  • 1Pharma-Forschungszentrum Bayer AG, Wuppertal. THOMAS.WEIHRAUCH.TW@bayer-ag.de

Medizinische Klinik (Munich, Germany : 1983)
|April 28, 1999
PubMed
Summary
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Placebo--efficacy and adverse effects in controlled clinical trials.

Arzneimittel-Forschung·1999

Placebo treatments are effective and can cause adverse drug reactions (ADRs), similar to active medications. Understanding placebo effects and ADRs is crucial for evaluating drug efficacy in clinical trials.

Area of Science:

  • Pharmacology
  • Clinical Trials
  • Evidence-Based Medicine

Context:

  • Placebo effects are well-documented, but placebo-induced adverse drug reactions (ADRs) are less understood.
  • Analysis of international clinical data from placebo-controlled multicenter studies across neuropsychiatry, cardiology, metabolism, and gastroenterology.

Purpose:

  • To investigate the efficacy and tolerability of placebo treatments.
  • To analyze the occurrence and characteristics of placebo-induced adverse drug reactions (ADRs).

Summary:

  • Placebo efficacy varies significantly across different therapeutic areas and conditions.
  • Adverse drug reactions (ADRs) were observed under placebo treatment, with profiles often mirroring those of active drugs and varying by indication.
  • Some ADRs, such as dry mouth, were reported more frequently with placebo than with verum (active drug).

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Impact:

  • Placebo therapy is an active intervention, not a 'non-therapy,' and its effects must be considered in clinical trial design.
  • Knowledge of placebo effects and ADRs is essential for accurately judging the efficacy of verum (active) medications.
  • The use of non-evidence-based 'pseudoplacebos' can be harmful due to potential serious side effects.