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Updated: Jul 11, 2026

Comparing the Effects of Electronic Cigarette Vapor and Cigarette Smoke in a Novel In Vivo Exposure System
Published on: May 24, 2017
Are instructions for over-the-counter nicotine replacement therapy products readable?
Amy B Stevens1, Kelly S McDaniel, Elbert D Glover
1University of Tennessee Graduate School of Medicine, Department of Family Medicine, Knoxville, TN 37920, USA.
Objective:
To examine readability characteristics of step-by-step directions presented in "How to Use" sections of over-the-counter (OTC) nicotine replacement therapy (NRT) products.
Methods:
Step-by-step directions of all (n=6) currently available OTC NRTs were assessed on reading grade level, text point size, dimensions, and illustrations.
Results:
The mean readability was at grade level 10.5+/-0.8, whereas the average text point size was 9.2+/-1.3. Two OTC NRT products provided illustrations to supplement step-by-step directions.
Conclusion:
As currently presented, the readability characteristics of "How to Use" sections of OTC NRTs do not facilitate consumer understanding.
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