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Related Experiment Video

Updated: Jan 6, 2026

Comparing the Effects of Electronic Cigarette Vapor and Cigarette Smoke in a Novel In Vivo Exposure System
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Comparing the Effects of Electronic Cigarette Vapor and Cigarette Smoke in a Novel In Vivo Exposure System

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Does e-cigarette nicotine strength influence substitution for combustible cigarettes?

Jeffrey S Stein1,2, Allison N Tegge1, Jeremiah M Brown1,2

  • 1Fralin Biomedical Research Institute at VTC, Addiction Recovery Research Center, Roanoke, VA, USA.

Journal of the Experimental Analysis of Behavior
|October 7, 2025
PubMed
Summary
This summary is machine-generated.

E-liquid nicotine strength did not significantly impact substitution for cigarettes. Higher nicotine concentrations decreased e-liquid purchases and subjective appeal, while increasing cigarette demand.

Keywords:
cigarettesdemande‐cigarettesnicotinesubstitution

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Area of Science:

  • Tobacco regulatory science
  • Behavioral economics
  • Nicotine product research

Background:

  • Understanding e-cigarette substitution for combustible cigarettes is crucial for public health.
  • Behavioral economics offers insights into consumer choice between nicotine products.

Purpose of the Study:

  • To investigate the impact of e-liquid freebase nicotine strength and price on cigarette substitution.
  • To assess the subjective effects of different nicotine strengths.

Main Methods:

  • Utilized the Experimental Tobacco Marketplace with dual and exclusive cigarette users.
  • Manipulated e-liquid nicotine strength (3-24 mg/mL) and price ($0.25-$1.00/mL).
  • Analyzed behavioral economic substitution and subjective effects.

Main Results:

  • All nicotine strengths substituted for cigarettes, particularly in dual users.
  • Nicotine strength did not affect substitution when measured by volume, but increased with strength when measured by nicotine content.
  • Higher nicotine strengths reduced e-liquid purchasing volume and probability, increased cigarette demand, and yielded less favorable subjective effects.
  • Increased e-liquid price decreased e-liquid purchasing but did not alter substitution.

Conclusions:

  • Nicotine strength does not strongly influence e-liquid's substitution for cigarettes based on purchase volume.
  • High-strength nicotine may decrease e-liquid appeal and purchase likelihood.
  • Future research should explore nicotine salts and concurrent access to varied nicotine strengths.